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Difference between variable declaration syntaxes in Javascript (including global variables)?
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Yes, there are a couple of differences, though in practical terms they're not usually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll s...
Node.js or Erlang
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I would give Erlang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty ab...
Is it better to reuse a StringBuilder in a loop?
I've a performance related question regarding use of StringBuilder.
In a very long loop I'm manipulating a StringBuilder and passing it to another method like this:
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Select all child elements recursively in CSS
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Use a white space to match all descendants of an element:
div.dropdown * {
color: red;
}
x y matches every element y that is inside x, however deeply nested it may be - children, grandchildren and so on.
The asterisk * matches any...
Object initialization syntax
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You can do it like this:
let p = new Person (Name = "John", BirthDate = DateTime.Now)
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How can I extract the folder path from file path in Python?
I would like to get just the folder path from the full path to a file.
6 Answers
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Why aren't variable-length arrays part of the C++ standard?
...bout this kicked off in usenet: Why no VLAs in C++0x.
I agree with those people that seem to agree that having to create a potential large array on the stack, which usually has only little space available, isn't good. The argument is, if you know the size beforehand, you can use a static array. An...
Aborting a stash pop in Git
I popped a stash and there was a merge conflict. Unlike the question that is listed as a duplicate, I already had some uncommitted changes in the directory which I wanted to keep. I don't just want to make the merge conflict disappear, but also to get my directory back to the state it was before the...
When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
I have a Spring MVC web app which uses Spring Security. I want to know the username of the currently logged in user. I'm using the code snippet given below . Is this the accepted way?
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jQuery callback for multiple ajax calls
...to make three ajax calls in a click event. Each ajax call does a distinct operation and returns back data that is needed for a final callback. The calls themselves are not dependent on one another, they can all go at the same time, however I would like to have a final callback when all three are com...