Antlr 4 - Java grammar rule “Explicit Generic Invocation” never gets visited
explicitGenericInvocation must start with nonWildcardTypeArguments which is <...>. a.Foo(args) therefore matches the general rule instead of the specialized one for generic types.
Translating Stata to R: collapse
r,data.table,stata,code-translation
Your intuition is correct. collapse is the Stata equivalent of R's aggregate function, which produces a new dataset from an input dataset by applying an aggregating function (or multiple aggregating functions, one per variable) to every variable in a dataset.
ActionScript 3 - What do these codes do?
actionscript-3,code-translation
Code 1: ++i is almost the same thing as i++ or i += 1; The only real difference is that it's modified before it is evaluated. Read more here. Code 2: << and >> are bitwise shifts, they literally shift bits by one place. You really need to understand Binary...
How to replace all String.equals by StringUtils.equals
If you are using netbeans you can use a custom refactoring: Menu Refactor/Inspect and Transform/Browse/New/Edit Script: <!description="Convert to StringUtils.equals"> $var!=null && $var.equals($val) :: $var instanceof java.lang.String => StringUtils.equals($var, $val) ;; ...
Converting CRC 8 function written in C to Java
This line is incorrect: res = (tmp & 0xff) + (tmp >> 8); In the original code CRC is an uint8_t, so the result of that calculation should be in the range 0-255. Hence you want this instead: res = ((tmp & 0xff) + (tmp >> 8)) & 0xff; What's...