大约有 16,000 项符合查询结果（耗时：0.0327秒） [XML]
How to check if a string is a valid hex color representation?
...
/^#[0-9A-F]{6}$/i.test('#AABBCC')
To elaborate:
^ -> match beginning
# -> a hash
[0-9A-F] -> any integer from 0 to 9 and any letter from A to F
{6} -> the previous group appears exactly 6 times
$ -> match end
i -> ignore ca...
Why do we need C Unions?
When should unions be used? Why do we need them?
18 Answers
18
...
Equivalent of jQuery .hide() to set visibility: hidden
...
You could make your own plugins.
jQuery.fn.visible = function() {
return this.css('visibility', 'visible');
};
jQuery.fn.invisible = function() {
return this.css('visibility', 'hidden');
};
jQuery.fn.visibilityToggle = function() {
return this.css('visibilit...
Scala: What is a TypeTag and how do I use it?
All I know about TypeTags is that they somehow replaced Manifests. Information on the Internet is scarce and doesn't provide me with a good sense of the subject.
...
Why we should not use protected static in java
I was going through this question Is there a way to override class variables in Java?
The first comment with 36 upvotes was:
...
How to get unique values in an array
...
Since I went on about it in the comments for @Rocket's answer, I may as well provide an example that uses no libraries. This requires two new prototype functions, contains and unique
Array.prototype.contains = function(v) {
for (var i...
Why does range(start, end) not include end?
...
Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains 10 elements which equals len(range(0, 10)). Remember that programmers prefer 0-based indexing.
Also, consider the following com...
RSA Public Key format
Where can i find some documentation on the format of an RSA public key?
3 Answers
3
...
Example of Named Pipes
How do I write a simple--bare minimum needed for it to work--test application that illustrates how to use IPC/Named Pipes?
...
Using sed, how do you print the first 'N' characters of a line?
Using sed what is an one liner to print the first n characters ? I am doing the following:
6 Answers
...