c++ mathematical calculations [closed]
simply iterate from 1 to the maximum number of offices n and add number of required plates to total. for 1 to 9 you need 1 plate, for 10 to 99 you need 2 and so on. we implement this by using limit and step. limit indicates when we need...
Javascript: Forloop Difference between i++ and (i+1)
The i++ is using post increment, so the value of the expression i++ is what the value was in the variable i before the increment. This code: if(sortedLetters[i] !== sortedLetters[i++]) return true; does the same thing as: if(sortedLetters[i] !== sortedLetters[i]) return true; i = i + 1; As x !==...
Nested foreach loop in a While loop can make the condition for the while loop go over?
Glad you found an answer. Here is something I was working on while you found it. // SET START DATE $startDate = new DateTime($dateStart); $nextBill = new DateTime(); for($i=1;$i<$countDays;$i++){ switch(true){ case ($startDate->format('j') > $days[2]): // go to next month $nextBill->setDate( $startDate->format('Y'), $startDate->format('m')+1, $days[0]; ); break; case ($startDate->format('j') > $days[1]): //...
Get return from javascript anonymous funcion in each loop(s)
You could use two variables: function test() { var toContinue = true, toReturn; $(xml).find("strengths").each(function() { $(this).each(function() { if("some condition") { toReturn = {something: "sexy there!"}; return toContinue = false; } }); return toContinue; }); if(toReturn) return toReturn; //else do stuff; } ...
call function after “loop” function for multiple elements is finished in jQuery
jquery,function,loops,animation
I didn't want to rewrite it all but you have some necessary stuff. It illustrates the use of the fadeIn callback. https://jsfiddle.net/c633f5w8/4/ var v = $(".box"); var cur = 0; var len = v.length; console.log(len); var first = function () { function fadeInNextLI() { if(cur+1 == len){ v.eq(cur++).fadeIn(200,'swing',finish); } else...
javascript manipulating html elements in a php foreach
javascript,php,html,html5,loops
To give to each button a different id you can do this way: <?php $i = 1; foreach($queryResult as $res) { ?> // output all table columns <form onsubmit="return javascriptFunction(); " method="post"> <button id="element-<?= $i ?>">edit</button> </form> <?php $i++; } ?> For the second question: if you want to pass...
for loop - checking if numbers in array move more up or down
A small semantic correction - the compiler isn't throwing any exception - your code compiles just fine. The runtime execution of this code causes an exception. And more to the point, an array a has elements from 0 to a.length - 1. Your code attempts to access element number a.length...
2 Foreach Loop Inside A Table
php,loops,laravel-4,foreach,blade
You create new TD for each member. The nested foreach has to be: <td> @foreach($user as $mem) {{ $mem->name }}<br> @endforeach </td> The result will be: <td> Name 1<br> Name 2<br> Name 3<br> </td> I don't know the template engine you used, add inside a loop condition and don't put...
Can javascript for loop starts from negative number? [closed]
javascript,jquery,loops,for-loop
Yes, it's possible, and it works fine. for (i=-5; i<=5; i++) { ... } is the same thing as i=-5; while (i<=5) { ... } continue { i++ } The point is that any expression is allowed inside the for's first part....
wrong results from simple java method [duplicate]
Change double average = sum/numbers; to double average = (double)sum/numbers; to force floating point division. Otherwise, int division (which is the operation that takes place when dividing two variables of int type) will give you 2 when dividing 8/3 (as you do in your example)....
printing an string in cross manner using c program
c,arrays,loops,for-loop,multidimensional-array
In your code, you need to change the for loop condition checking expressions, like i == lenstr and later i==0. They are not entering the loop, essentially. Instead, you can replace the whole block for(i = 0;i == lenstr;i++) { str2[i][j] = str[i]; j = j + 1; } for(i...
Linq implementation of for and if loop
This is effectively the same as the answer from Stephen Kennedy, but I sometimes like this syntax. Usually for more complicated things, but still: foreach (var item in from l in list1 where l == eCode select l) { // Do something with each item } ...
Get next item in array using iterator using flags
javascript,jquery,loops,iterator,iteration
$.each(playlist,function(index, value){ if( !value.played ){ if( stop ){ song = index; return false; } else { if ( !value.playing ) { playlist[index].playing = false; stop = true; } } } }); outputs (index):87 hash2 (index):87 hash3 (index):87 hash4 (index):87 hash5 (index):87 hash1 ...
Run external R script n times, with different input paramters, and save outputs in a data frame
Wrap the script into a function by putting: my_function <- function(latitude) { at the top and } at the bottom. That way, you could source it once then then use ldply from the plyr package: results <- ldply(10 * 5:8, myFunction) If you wanted a column to identify which latitude...
Creating a number list with nested For loops in Python
For the first instance, try this: print('', end = '') For the second instance, the mistake is that you are adding 0 to the second for loop. Change it to: for j in range(0, 1+i): The thing with range is that it goes until one number lower. Have a look...
How do I count the total number of iterations within a loop?
User has many photos @user.photos.count #as user has_many photos From loop with index of each photo object @user.photos.map.with_index.to_a #[[photo1, 0], [photo2, 1]] To get total count/ or total iteration of photos @user.photos.map.with_index(1).to_a.last.last You can find enumerator#with_index...
Object Variable or With Block Variable Not set in loop using find function
vba,excel-vba,loops,object,find
If the Cells.Find(What:="Run:" & i,... fails to find a match, the Select part of the statement will then cause the error. You should always store the result of a Find in a range variable and then test that for Nothing. Add this declaration to your code: Dim cellsFound As Range...
How to repeat this statement in R probably using apply()
Here's a recommended way to ask a question, focusing on the fact that your actual data is too big, too complicated, or too private to share. Question: how to apply a function on each row of a data.frame? My data: # make up some data s <- "Lorem ipsum dolor...
How can i make a jQuery animation loop on infinite, after it finish?
You can achieve this in CSS alone through the use of @keyframes. Try this: @-moz-keyframes rotating { 0% { -moz-transform: rotate(-20deg); } 50% { -moz-transform: rotate(20deg); } 100% { -moz-transform: rotate(-20deg); } } @-webkit-keyframes rotating { 0% { -webkit-transform: rotate(-20deg); } 50% { -webkit-transform: rotate(20deg); } 100% { -webkit-transform: rotate(-20deg);...
for each loop: how to step out of conditions
Use else as follows: for each file in folder.files if (filename = "foo.bar") then log.writeline("found foo.bar -> delete!") fs.deletefile (folder & file.name), true 'exit for else if (isNumeric(firstPosition)) then if (isNumeric(secondPosition)) then log.writeline("2 numbers seen -> alright!") else log.writeline("Filename is corrupt!") fs.copyFile file, errorFolder, true fs.deleteFile file, true 'exit for...
Index out of Range exception in arrays
This line: public static string [] starGenerated = new string[numberOfForbiddenWords]; ... is executed when the class is initialized. That will happen while numberOfForbiddenWords is still 0, i.e. long before this line is executed: numberOfForbiddenWords = int.Parse(Console.ReadLine()); So when you call StarGenerator, unless numberOfForbiddenWords is still 0, you're going to be...
PHP: How to push Select results to multi-dimensional array (partially working)
php,arrays,loops,select,multidimensional-array
You are getting this output because you are overwriting the keys in your array. You would need to save to another array (aka not 2-dimensional): <?php $tbl = "TranslationsMain"; $conn = new mysqli($servername, $username, $password, $dbname); if($conn->connect_error){ die("Connection failed: " . $conn->connect_error); } $sql = "SELECT * FROM " ....
Callback in a double loop
As a native recursion alternative, here's a way to do it var marker = [[43.000,-79.321],[44.000,-79],[45.000,-78],[46.000,-77]]; var result = []; var i=0, j=0; function test(){ if(j >= marker.length){ j=0; i++; } // j is done one lap, reset to 0, i++ for next lap if(i >= marker.length){ return false; } //...
Appending a data frame with for if and else statements or how do put print in dataframe
It's generally not a good idea to try to add rows one-at-a-time to a data.frame. it's better to generate all the column data at once and then throw it into a data.frame. For your specific example, the ifelse() function can help list<-c(10,20,5) data.frame(x=list, y=ifelse(list<8, "Greater","Less")) ...
How does a while loop inside a for loop work?
It will enter the for loop first when i = 0. Immediately after it will enter the while loop and continue running indefinitely as i will always be 0 and therefore < 3. You perhaps need to deal with j in the break condition of inner loop for avoiding an...
PHP foreach and continue [closed]
If you made the if statements equivalent, I'd say the top version is more generic and better for more complex statements due to the following: If you had multiple if - continue statements, the first approach would allow you to list them in order without nested indentation which could keep...
Problems retrieving nested data from json
javascript,html,json,loops,nesting
bussen is an array "bussen":[{"busnummer":"530","busnaam":"test bus 1"},{"busnummer":"540","busnaam":"mechelen"}] You need to iterate through its items For example , to get only the first item you'd do : $.each(json, function(i, field) { $("#bussen").append("<li>..." + field.bussen[0].busnummer + ": " + field.bussen[0].busnaam + "</><li><br />"); }); You might(!) want to do this : $.each(json,...
Python - Using a created list as a parameter
python,list,loops,if-statement,compare
I believe you are incorrectly referencing to num instead of line which is the counter variable in your for loops, you either need to use num as the counter variable, or use line in the if condition. def countGasGuzzlers(list1, list2): total = 0 CCount = 0 HCount = 0 for...
Iterate through a specific directory tree and store all the .ttf files into an array in PHP
php,loops,iterator,directory,iteration
SPL's recursive iterators are particularly useful for this type of functionality: abstract class FilesystemRegexFilter extends RecursiveRegexIterator { protected $regex; public function __construct(RecursiveIterator $it, $regex) { $this->regex = $regex; parent::__construct($it, $regex); } } class FilenameFilter extends FilesystemRegexFilter { // Filter files against the regex public function accept() { return ( !...
Why this while loop cannot print 1,000 times per seconds?
Try System.nanoTime() since you are not measuring time since the epoch. System.currentTimeMillis vs System.nanoTime
Creating an auto incrementing loop within a function in python
python,loops,tkinter,increment
You can use itertools.count() for that. It creates a generator, that just returns one number after the other, when you call it's next() method: from itertools import count counter = count(1) for row in rows: row_id = counter.next() In this example on every iteration through the rows you will get...
How to incrementally iterate through all possible values of a byte array of size n.
In case you don't realize: 16 bytes is the size of a Guid or the size of a standard cryptographic key size. There are so many combinations that you cannot enumerate even a fraction. Maybe you can enumerate the last 8 bytes if you parallelize across 1000 machines and wait...
how to find a specific objet in a liste of object (other way than a loop)
If you want set "Yes" to one of picture from pictures array, you should use code like this; $bestscorelike = 0; $bestPictureObject = null; foreach($pictures as $picture) { $scorelike = $picture->getScorelike(); if($scorelike > $bestscorelike) { /** * Now in the $bestPictureObject exists picture with scorelike less then current $picture */...
How can I reset my program? (without using goto) [closed]
Use a do while loop to enclose your code and set the condition to what you want. #include <iostream> #include <string> #include <fstream> using namespace std; int main() { int flag=1; do { //your code that needs to be repeated //when you need to exit set flag=0 } while(flag); }...
Matlab Calculating mean of distribution quantile in a for-loop
matlab,loops,for-loop,distribution,quantile
Your test variable is a three-dimensional variable, so when you do test2 = test(:,1); and then test2(:) <VaR_Calib_EVT/100 it's not the same as in your second example when you do test(:,i)<(VaR_Calib_EVT(:,i)/100) To replicate the results of your first example you could explicitly do the test2 assignment inside the loop, which...
Add mouseListener to Labels in Array Loop
the problem is when mouse-event fire value of i have value 6 or last value of for-loop for (i = 0; i < 6; i++){} you can create a jlable class and give a instance variable like lableindex so when mouse-event occurs you first get the lable index and then...
Counter not working after jumps - assembly language
loops,assembly,counter,increment
The fault is caused because the mouse interrupt 33h function AX=0003h returns the mouse position in CX and DX. This overwrites your "counter" in register CX. It is always a dangerous game to keep values in registers throughout a program. Better to have a memory variable location. You could also...
R - Remove columns with 0 values in df with 1 or more remaining columns
Try with either drop=FALSE as the default is drop=TRUE or you remove the , and it will return a data.frame. For more info, please check ?"[" dat2[colSums(dat2) > 0] Or dat2[,colSums(dat2) > 0, drop=FALSE] If you use subset, the default is drop=FALSE subset(dat2, select=colSums(dat2) > 0) ...
Jquery Loop appending image element just appends once
You should create the image object within the for loop because if it is not then it is using the same object multiple times See demo Change you jQuery to this, $(document).ready(function () { for (i = 0; i < 12; i++) { var myImage = new Image(); myImage.src =...
Nil errors in creating a hash in Ruby on Rails
ruby-on-rails,arrays,ruby,loops,ruby-on-rails-4
the problem that I see if I understand what you are trying to do is the way you are dumping idea.evaluations into @idea_evaluations. @idea_evaluations is going to be an array of arrays of evaluations not an array of evaluations as you think. e.g. [[eval1,eval2],[eval3,eval4,eval5]] instead of [eval1, eval2, eval3, eval4,...
IllegalStateException: Iterator already obtained [duplicate]
You have to call DirectoryStream<Path> files = Files.newDirectoryStream(dir); each time you iterate over the files. Pls check this question... java.lang.IllegalStateException: Iterator already obtained...
How to make function in loop run synchronously?
javascript,jquery,loops,google-chrome-extension,synchronization
One option would be to make your function(response) recursive. When it runs, call this same method again. Pass in some of your "looping" variables, and just do an if check at the beginning. function AnotherGoRound(i,data) { if (i<data[i2].data.length) { console.log("SENDING: i=" + i + "; i2=" + i2); // Send...
How to retrieve filtered data from json with double for loop
javascript,json,loops,for-loop,filter
If i understood you correctly, you need to add additional for loop for all bussen for (var i=0;i<bushalte2.length;i++) { $("#bussen").append(bushalte2[i].name + "<br/>"); for (var j=0; j <bushalte2[i].bussen.length; j++) { $("#bussen").append(bushalte2[i].bussen[j].busnummer + "<br/>"); } } here is updated jsfiddle https://jsfiddle.net/or4e8t3u/...
C++ Same name local variables keeping values between loops [closed]
c++,loops,for-loop,local-variables
The problem is here: for (int hcount = 0; hcount < height; hcount++); You end the loop with ;, which is a no-op. The hcount is in any case visible only in the scope of the loop. After the loop execution (i.e. after ;), the inner loop starts executing. Your...
How do I use the Find function with a variable term, for example Run1, Run2, RunX
Yes, you need a variable, and just concatenate it. Use something like this: Dim counter as long counter = 1 Cells.Find(What:="Run:" & counter, After:=Cells(1, 1), _ ...yaddayadda Or use it in a loop: For i=1 to 100 Cells.Find(What:="Run:" & i, After:=Cells(1, 1), _ ...yaddayadda Next i ...
Run 3 variables at once in a python for loop.
python,loops,variables,csv,for-loop
zip the lists and use a for loop: def downloadData(n,i,d): for name, id, data in zip(n,i,d): URL = "http://www.website.com/data/{}".format(name) #downloads the file from the website. The last part of the URL is the name r = requests.get(URL) with open("data/{}_{}_{}.csv".format(name, id, data), "wb") as code: #create the file in the format...
How to build a 'for' loop with input$i in R Shiny
Use [[ or [ if you want to subset by string names, not $. From Hadley's Advanced R, "x$y is equivalent to x[["y", exact = FALSE]]." ## Create input input <- `names<-`(lapply(landelist, function(x) sample(0:1, 1)), landelist) filterland <- c() for (landeselect in landelist) if (input[[landeselect]] == TRUE) # use `[[`...
Query With CONCAT and LOOP using SELECT
There is LPAD. SELECT LPAD(reference_number, 10, '0') FROM example ...
Loops to minimize function of arrays in python
python,arrays,loops,minimization
There is already a handy formula for least squares fitting. I came up with two different ways to solve your problem. For the first one, consider the matrix K: L = len(X) K = np.identity(L) - np.ones((L, L)) / L In your case, A and B are defined as: A...
GPA Calculator in C
There are two issues here. First, you need to discard new lines on your scanf. See here for details. Second the || operator is going to cause the whole statement to evaluate to true no matter if the user has entered Y or y. Try switching to an && operator...
Trying to output a list of lists from a loop in r
James, the following should work. I've just tested it. pair1 <- c(2,4) pair2 <- c(1,3) pair3 <- c(5,6) pairedList <- c(pair1, pair2, pair3) botList <- c(1:(length(pairedList)/2) library(gtools) test <- function(pairedList, botList) { #initialising empty list output <- list() for (i in botList) { x <- rep(0, length(pairedList)) ind <- pairedList[i:(i+1)]...
Matlab: Looping through an array
matlab,loops,for-loop,while-loop,do-while
You could do this using conv without loops avg_2 = mean([A(1:end-1);A(2:end)]) avg_4 = conv(A,ones(1,4)/4,'valid') avg_8 = conv(A,ones(1,8)/8,'valid') Output for the sample Input: avg_2 = 0.8445 5.9715 -0.6205 -3.5505 2.5530 6.9475 10.6100 12.5635 6.4600 avg_4 = 0.1120 1.2105 0.9662 1.6985 6.5815 9.7555 8.5350 avg_8 = 3.3467 5.4830 4.7506 Finding Standard Deviation...
Interface Controls for DoEvent in Excel
excel,vba,excel-vba,loops,doevents
How about changing your 'do until' loop to a 'for next' loop? Something like?... Sub rowinput() Dim lngInputStartRow As Long Dim lngInputEndRow As Long Dim row_number As Long lngInputStartRow = Range("A1").Value 'specify your input cell here lngInputEndRow = Range("A2").Value For row_number = lngInputStartRow To lngInputEndRow DoEvents Next row_number 'Then a...
Incrementing an integer and initialisation placement having a weird effect?
You are causing undefined behavior in scanf("%s", &c); because "%s" specifier adds a terminating nul byte to the target which is a single char. Instead you can try if (scanf(" %c", &c) != 1) handleErrorPlease(); the space before the "%c" is intentional, it will eat any white space character left...
Using Yahoo! database without quantmod functions
x<-c('AAIT', 'AAL', 'AAME') kk<-lapply(x,function(i) download.file(paste0("http://ichart.finance.yahoo.com/table.csv?s=",i),paste0(i,".csv"))) if you want to directly read the file: jj<- lapply(x,function(i) read.csv(paste0("http://ichart.finance.yahoo.com/table.csv?s=",i))) ...
performance issues executing list of stored procedures
c#,multithreading,performance,loops
What I would do is something like this: int openThread = 0; ConcurrentQueue<Type> queue = new ConcurrentQueue<Type>(); foreach (var sp in lstSps) { Thread worker = new Thread(() => { Interlocked.Increment(ref openThread); if(sp.TimeToRun() && sp.HasResult) { queue.add(sp); } Interlocked.Decrement(ref openThread); }) {Priority = ThreadPriority.AboveNormal, IsBackground = false}; worker.Start(); } //...
Array values are not being read correctly inside gameloop
So it turns out I was wrong in my other comment. The non-detection of edges was causing you to index into unset parts of your array causing those weird messages and was all of your problems I scaled it back a bit to look at it see https://jsfiddle.net/goujdwog/2/ the important...
Matching key/value pairs in two dictionaries and creating a third one
The problem is this line matched = {i: data1[i]} It is overwriting the previous values of the dictionary. It should be matched[i] = data1[i] Or you can use update matched.update({i: data1[i]}) ...
R - Check different matrices with a possible lag
Here's a simple way to do it: lag <- 3 # or whatever lag you want nr <- nrow(mat1) nc <- ncol(mat1) mat3 <- matrix(0, ncol=nc, nrow=nr) for (r in 1:nr) { for (c in 1:nc) { if (mat1[r,c] == 1 && any(mat2[r,c:min(c+lag,nc)] == 1)) mat3[r,c] <- 1 } }...
How to innerHTML a function with array as parameter?
javascript,arrays,loops,foreach,innerhtml
Just take a variable for the occurrence of even or odd numbers. var myArray = function (nums) { var average = 0; var totalSum = 0; var hasEven = false; // flag if at least one value is even => true, otherwise false nums.forEach(function (value) { totalSum = totalSum +...
How to match words in 2 list against another string of words without sub-string matching in Python?
python,regex,string,loops,twitter
Store slangNames and riskNames as sets, split the strings and check if any of the words appear in both sets slangNames = set(["Vikes", "Demmies", "D", "MS", "Contin"]) riskNames = set(["enough", "pop", "final", "stress", "trade"]) d = {1: "Vikes is not enough for me", 2:"Demmies is okay", 3:"pop a D"} for...
Methods within my while Loop not working
Calling open(output.txt) returns a file object, not the the text within the file. Calling str on the file object just gives a description of the object, not the text. To get that you need to something like output = open('output.txt') past_results = output.read() Also, it looks like you're calling str...
Infinite loop with fread
If you're "trying to allocate an array 64 bytes in size", you may consider uint8_t Buffer[64]; instead of uint8_t *Buffer[64]; (the latter is an array of 64 pointers to byte) After doing this, you will have no need in malloc as your structure with a 64 bytes array inside is...
How to create series of pandas dataframe by iteration
To create variables by string, you can use - globals() function , which returns the dictionary of global namespace, and then create a new element in that dictionary for your variable and set the value to the value you want. Also , you can directly call - pandas.DataFrame(Series) - and...
How to print iterations per second?
python,performance,loops,cmd,progress
You can get a total average number of events per second like this: #!/usr/bin/env python3 import time import datetime as dt start_time = dt.datetime.today().timestamp() i = 0 while(True): time.sleep(0.1) time_diff = dt.datetime.today().timestamp() - start_time i += 1 print(i / time_diff) Which in this example would print approximately 10. Please note...
How can I iterate through nested HTML lists without returning the “youngest” children?
javascript,jquery,html,list,loops
You could just check the nesting level by counting parents $("ul li").each(function() { if ( $(this).parents('ul').length < 3 ) { // do stuff } }); FIDDLE To make it more dynamic one could simply find the deepest nesting level and filter based on that var lis = $("ul li"); var...
while loop is not breaking even if the condition is satisfied
You are using same variable (i) for both loops, and in the inner loop the condition of exit is i being 0 or negative, but the only change in this variable in the inner loop is i=i/10 which usually gives unexpected results when using with int. Also, the i will...
how to make a loop and if statement that loops through a different groups of radio buttons (javascript)
html,loops,twitter-bootstrap-3,radio-button
Here, take a look at this demo boootply. Since you're using Bootstrap, jQuery should already be part of your page. Here's the relevent code: $(document).ready(function(){ $('#submitBtn').click(function(e){ e.preventDefault(); if($('li.option :radio:checked').length == $('li.option').length){ // enter code here to submit your form alert('submitted'); }else{ alert('Please answer all questions'); } }); }); And the...
R - loop and break after value found for each Rows
You seem to be fond of for loops and those seem like a natural choice here. Just change your code to this: for(i in 1:nrow(matSolo)){ for(j in 1:ncol(matSolo)){ if(SoloNight[i,j] == 1) { matSolo [i,j] <- 1 break } } } However, this will be quite slow for big matrices. Fortunately,...
How to iterate through a table in its exact order?
You may utilize integer part of the table to store keys in order: function add(t, k, v, ...) if k ~= nil then t[k] = v t[#t+1] = k return add(t, ...) end return t end t = add({ }, "A", "hi", "B", "my", "C", "name", "D", "is") for i,k...
Plotting multiple graphs in one page using loop
You don't need to create the xts objects persistently. Note the modification of the use of your names() function in the for() specification as well: for (i in names(log_return)[2:11]){ plot(na.omit(xts(log_return[[i]],log_return$Date)), xlab = "Date", ylab = "log_return", main = i) } Or, as @SpacedMan mentions, you can use get() to reference...
C++ - back to start of loop without checking the condition
There is no redo keyword for going back to the start of a loop, but there's no reason you couldn't do it with goto. (Oh I feel so dirty recommending goto...) int tries = 0; for(int i=0; i<10; ++i) { loop_start: bool ok = ((i+tries)%3==0); if(ok) { ++tries; goto loop_start;...
How to create bootstrap html structure in php loop?
You can do some thing like this. You can modify according to your need. I just mentioned logic <div class="row"> <?php $i = 0; foreach(....../*your code*/){ if($i == 4){ $i = 0; ?> </div><div class="row"> <?php } ?> <div class="col-sm-3"> <!--content--> </div> <?php $i++; } ?> </div> ...
Escape out of 2 Javascript loops (or stop script)
To stop setInterval you have to use this clearInterval(n); And put var n = setInterval(function () {.... ...
An error while looping a linear regression
The problem arises from you mixture of subsetting types here: df$target[which(df$snakes=='a'),] Once you use $ the output is no longer a data.frame, and the two parameter [ subsetting is no longer valid. You are better off compacting it to: sum(df[df$snakes=="a","target"]) [1] 23 As for your model, you can just create...
Matlab: Writing to a file
arrays,matlab,loops,math,for-loop
If you want to get the matrices to be displayed in each column, that's going to be ugly. If I'm interpreting your request correctly, you are concatenating row vectors so that they appear as a single row. That's gonna look pretty bad. What I would suggest you do is split...
How to dynamically name my object params in this lodash loop?
javascript,loops,for-loop,lodash
You're referring to params.term as an existing array, which is why you're getting an error. Try this instead... params["term" + index] = .... That will create a property for each index instead. You can either access it with params["term1"] or... params.term1 ...
Grep for beginning of line while searching for a certain string
If the columns are delimited with tabs then you can do: role='Role A' number=$(awk -v role="$role" -F '\t' '$2==role {print $1}' role_info.txt) If it's just spaces, try instead: role='Role A' number=$(grep "$role" role_info.txt | cut -d' ' -f1) Either way, you can then check if a match was found with:...
matlab Create growing matrix with for loop that grows by 3 per loop
Here is your problem: HSRXp(:,i*3) = [HSRXdistpR(:,i) HSRXdistpL(:,i) TocomXdistp(:,i)]; You're trying to assign an n x 3 matrix (RHS) into an n x 1 vector (LHS). It would be easier to simply use horizontal concatenation: HSRXp = [HSRXp, [HSRXdistpR(:,i) HSRXdistpL(:,i) TocomXdistp(:,i)]]; But that would mean reallocation at each step, which...
How can I make my own timer without standard library?
I am posting this answer to my own question, as per the comments received. It is not possible to make a timer because: The time that an iteration will take is unpredictable, this depends not only on the CPU used, but you need to take into account power management, the...
How do I write a loop to read text file and insert it to the database
To add a simple loop, you can use your existing AutoImportFlatFiles function like this: $Folder= $(read-host "Folder Location ('C:\Test\' okay)") foreach ($file in (get-childitem $Folder)) { $location = split-path $file.FullName -Parent $filename = (split-path $file.FullName -Leaf).split(".")[0] $extension = (split-path $file.FullName -Leaf).split(".")[1] AutoImportFlatFiles -location $location -file $filename -extension $extension -server "WIN123"...
How to iterate multi dimensional array and calculate sum for each row in php?
php,arrays,loops,foreach,dimensional
When you do this loop: foreach($array as $cases) { if($cases['allergies'] == $_POST['allergies']){ $count = 1; } if($cases['vege'] == $_POST['vege']){ $count1 = 1; } if($cases['bmi'] == $bmi2) $count2 = 1; if($cases['age'] == $age2) $count3 = 1; $sum = $count + $count1 + $count2 + $count3; echo $sum; } You are not...
Php counting with $i++
<?php for($i = 0; $i < count($collection); $i++){ echo '<div id="'.$i.'">' . 'Anchor' . '</div>'; echo '<a href="#'.$i.'">' . 'Link-A ' . '</a>'; echo '<a href="#'.$i.'">' . 'Link-B ' . '</a>'; } ?> It is a basic for loop....
Lua in pairs with same order as it's written
In Lua, the order that pairs iterates through the keys is unspecified. However you can save the order in which items are added in an array-style table and use ipairs (which has a defined order for iterating keys in an array). To help with that you can create your own...
echo both users
Why don't you just do it in one single query? Just replace the necessary table and column name, and variables/values/parameters to be bind in your query: $query = mysqli_query($conn, "SELECT first_name, last_name, description, role FROM `wp_usermeta` WHERE `first_name` = '$first_name' OR `last_name` = '$last_name' OR `description` = '$description' OR `role`...
Difference between two similar functions, why is one working and the other not
javascript,jquery,loops,vue.js
Simple answer, you don't. Because your function is called through timeout, it's not in the same context anymore and 'this' will not refer to the same object anymore. You can do this: loopThroughSplittedTextNotWorking: function() { // delete this var locationInString = 0; var that = this; function delayedOutput() { document.getElementById('output').innerHTML...
Python: TypeError: list indices must be integers, not list
You are indexing your lists with a non-int type index: for count in list_kp2_ok: for count1 in list_kp2_2_ok: if list_kp2_ok[count]==list_kp2_2_ok[count1]: So a quick fix for that is to do it this way: for coord1 in list_kp2_ok: for coord2 in list_kp2_2_ok: if coord1==coord2: You can even do the whole coding in...
How to use _lodash to retrieve value from Objects in Array?
javascript,arrays,loops,lodash
You can use _.pluck: https://lodash.com/docs#pluck console.log(_.pluck(_.pluck(list, 'ticker'), 'ticker')); http://jsfiddle.net/kevinle/vj7e66zy/...
how to write a loop of the number of for loops in R?
I'll assume you have a list of each loop variable and its maximum value, ordered from the outermost to innermost variable. loops <- list(a=2, b=3, c=2) You could create a data frame with all the loop variable values in the correct order with: (indices <- rev(do.call(expand.grid, lapply(rev(loops), seq_len)))) # a...
How to make sure to draw two different random cards [closed]
python,loops,random,while-loop
There are three different options you have to choose from here, I will explain each one: Option 1 - break while first_draw == second_draw: first_draw = random.choice(card_values) + random.choice(card_classes) second_draw = random.choice(card_values) + random.choice(card_classes) break break will end the innermost loop. In this case, the loop will only run once....