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Perform .join on value in array of objects
...tring, and so a.name is undefined) isn't treated as an object.
Edit: I've now refactored it further to this:
x.reduce(function(a, b) {return a + ["", ", "][+!!a.length] + b.name;}, "");
which I believe is cleaner as a is always a string, b is always an object (due to the use of the optional ini...
How to write a scalable Tcp/Ip based server
...ethod which will run the callback again if the client sends any more data. Now here's the really tricky part, when the client sends data, your receive callback might only be called with part of the message. Reassembly can become very very complicated. I used my own method and created a sort of propr...
Combining two expressions (Expression)
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@Aron now look at the date: the .NET framework visitor (ExpressionVisitor) did not exist back then; I have a related example on stackoverflow from a similar date where it implements the visitor manually: it is a lot of code.
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Why do you need explicitly have the “self” argument in a Python method?
...k bork bork!
>>> c.foo()
Hi!
>>>
It also (as far as I know) makes the implementation of the python runtime easier.
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How do I use extern to share variables between source files?
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope?
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TypeError: 'module' object is not callable
...ple who took time to up vote (myself included) who didn't understand this. Now, it's obvious, and next time I reach in my toolbox, I will find this tool when a module is reported as "not callable". Getting started with a new language is the toughest part.
– jmort253
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Facebook Android Generate Key Hash
...ate a new certificate when you next try to build a debug package.
Let me know if that works.
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Splitting templated C++ classes into .hpp/.cpp files--is it possible?
...and lib files to hide the implementation, it is simply not possible.
To know why, let us look at the compilation process. The header files are never compiled. They are only preprocessed. The preprocessed code is then clubbed with the cpp file which is actually compiled. Now if the compiler has to ...
How to rename a single column in a data.frame?
I know if I have a data frame with more than 1 column, I can use
20 Answers
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Function return value in PowerShell
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With PowerShell 5 we now have the ability to create classes. Change your function into a class, and return will only return the object immediately preceding it. Here is a real simple example.
class test_class {
[int]return_what() {
W...