python,list,slice,notation,shallow-copy

[:] creates a slice, usually used to get just a part of a list. Without any minimum/maximum index given, it creates a copy of the entire list. Here's a Python session demonstrating it: >>> a = [1,2,3] >>> b1 = a >>> b2 = a[:] >>> b1.append(50) >>> b2.append(51) >>>...

python,unicode,tkinter,notation

I managed to figure it out for myself. The comment above was helpful, but I still needed a way to concatenate the unicode characters because I was building a much larger list of characters. To concatenate the unicode characters, I found pythons built in unicode function. I returned the superscript...

If your algorithm has to look at every item in the array, that algorithm is O(n). If doesn't really matter if the array is full or not, since you can be flexible in how you define n. It can be either the size of the array or the number of...

This is ternary IF operator. This line is equal to int mPart; if(i < mParts.length) { mPart = Integer.parseInt(mParts[i]); } else { mPart = 0; } ...

As a general strategy for creating complex regular expressions, you can create different regular expressions for each of the individual components. E.g. first create a regular expression matching placement ([KQNBR][ld][a-h][1-8]). This is easy to read and easy to create. Then create a regular expression for the normal moves ([a-h][1-8]\s[a-h][1-8]) and...

database,relation,relational,notation,colon

The notation f : X -> Y tells you that the function f is with a domain X and codomain Y. In this instace, t is a function that receives a real number (domain R) and returns a number from the union of all possible results for dom(A). More information:...

In set theory notation |A| is the cardinality of set A, in other words the number of elements contained in set A. For Reference: http://www.mathsisfun.com/sets/symbols.html...

string,constants,big-o,complexity-theory,notation

Yes, that's correct. The space complexity of storing a new string of length n is Θ(n) because each individual character must be stored somewhere. In principle you could reduce the space usage by noticing that stringval2 ends up being a copy of stringval1 and potentially using copy-on-write or other optimizations,...

Did you mean something like this? f(x, y, a) = \frac{1}{1*e^{0.5^a} +x*e^{1.5^a} + y*e^{2.5^a}} \left[ 1*e^{0.5^a}, x*e^{1.5^a}, y*e{2.5^a}\right] which produces I'm not sure how you want to represent your vector in mathematical notation. There is no one right way....

Because these two examples are not the same. The first one is ok: prop == "Laser" obj[prop] == obj["Laser"] obj["Laser"][0] === 0 prop == "Missile" obj[prop] == obj["Missile"] obj["Missile"][0] == 4 In the second one you are trying to access "prop" property, which is undefined: obj.prop == obj["prop"] obj["prop"] ===...

Change int value; to double value; and also change your vector to double instead of int. Better yet, since you have three declarations that must all be synchronized to the correct type, make an alias to that type like this: using DATA_TYPE = double; then declare your vectors and such...

As you know n grow faster than logn. You also know we can multiply same strength factor to a complexity equation. So we could simply say n^3 grow faster than n^2 logn. => O(n^3)...

It means you are declaring another variable. Just a different notation. It is the same as: var stManager = {}; var _stm = stManager; ...

It has to do with precision errors and tolerances. The way to deal with it is to compare the difference as opposed to a tolerance level, ex; eps = 0.00000001 if (abs(a-b) < eps) //success ...