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What does 'var that = this;' mean in JavaScript?
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I'm going to begin this answer with an illustration:
var colours = ['red', 'green', 'blue'];
document.getElementById('element').addEventListener('click', function() {
// this is a reference to the element clicked on
var that = this;
colours.f...
What is a 'multi-part identifier' and why can't it be bound?
...se errors when I try to update tables based on another table. I end up rewriting the query, change the order of joins, change some groupings and then it eventually works, but I just don't quite get it.
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Python Empty Generator Function
In python, one can easily define an iterator function, by putting the yield keyword in the function's body, such as:
9 Answ...
Using async/await for multiple tasks
...g an API client that is completely asynchrounous, that is, each operation either returns Task or Task<T> , e.g:
6 ...
How to recover stashed uncommitted changes
I had some uncommitted changes in my development branch and I stashed them using git stash , but there were some changes which were very important among those stashed ones. Is there any way to get back those changes?
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Setting an object to null vs Dispose()
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It's important to separate disposal from garbage collection. They are completely separate things, with one point in common which I'll come to in a minute.
Dispose, garbage collection and finalization
When you write a using ...
throwing exceptions out of a destructor
...ed behavior. Stroustrup makes the point that "the vector destructor explicitly invokes the destructor for every element. This implies that if an element destructor throws, the vector destruction fails... There is really no good way to protect against exceptions thrown from destructors, so the libra...
Is there anything like .NET's NotImplementedException in Java?
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Commons Lang has it. Or you could throw an UnsupportedOperationException.
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How to make junior programmers write tests? [closed]
We have a junior programmer that simply doesn't write enough tests.
I have to nag him every two hours, "have you written tests?"
We've tried:
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Lisp in the real world
I have experimented with Lisp (actually Scheme) and found it to be a very beautiful language that I am interested in learning more about. However, it appears that Lisp is never used in serious projects, and I haven't seen it listed as a desired skill on any job posting. I am interested in hearing ...