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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...sole.log([0, 5, 0, 3, 0, 1, 0].filter_0());
//prints [5,3,1]
This is a standard way to extend objects and add new methods. Lots of libraries do this.
However, let's look at how for in works now:
var listeners = ["a", "b", "c"];
for (o in listeners) {
console.log(o);
}
//prints:
// 0
// 1
//...
Logical XOR operator in C++?
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Note that this only works for booleans. And ^ would work perfectly well there. 2 !=1 => 1 which is not what you want! as LiraNuna says, putting a ! infront of both sides solves that problem. but again, then you can use bitwise ^...
– Brian...
CSS: Set a background color which is 50% of the width of the window
... the rest of your content has a z-index higher than the background element and you should be good to go.
Modern Browsers
If newer browsers are your only concern, there are a couple other methods you can use:
Linear Gradient:
This is definitely the easiest solution. You can use a linear-gradien...
Bash empty array expansion with `set -u`
I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion:
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How to get the caret column (not pixels) position in a textarea, in characters, from the start?
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With Firefox, Safari (and other Gecko based browsers) you can easily use textarea.selectionStart, but for IE that doesn't work, so you will have to do something like this:
function getCaret(node) {
if (node.selectionStart) {
return node.sel...
Getting the count of unique values in a column in bash
...currence of the different values in a column for all the files in a folder and sort them in decreasing order of count (highest count first). How would I accomplish this in a Linux command line environment?
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Forgot “git rebase --continue” and did “git commit”. How to fix?
...rebasing code in git, I got some merge conflicts. I resolved the conflicts and did:
4 Answers
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What is the use for Task.FromResult in C#
In C# and TPL ( Task Parallel Library ), the Task class represents an ongoing work that produces a value of type T.
6 Ans...
How to truncate the time on a DateTime object in Python?
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Note that python 2 and python 3 docs both state that the replace() method returns a datetime object, so the correct incantation would be: dt = datetime.datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
– Br...
How to create a sequence of integers in C#?
...(ending at 9). If you want 0 through 10, the second parameter would be 11. And if you need an actual array and not IEnumerable<int>, include a call .ToArray().
– Anthony Pegram
Jan 3 '11 at 22:11
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