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how do i block or restrict special characters from input fields with jquery?
...= String.fromCharCode(!event.charCode ? event.which : event.charCode);
if (!regex.test(key)) {
event.preventDefault();
return false;
}
});
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How to remove files that are listed in the .gitignore but still on the repository?
...rom the repository manually:
git rm --cached file1 file2 dir/file3
Or, if you have a lot of files:
git rm --cached `git ls-files -i --exclude-from=.gitignore`
But this doesn't seem to work in Git Bash on Windows. It produces an error message. The following works better:
git ls-files -i --ex...
What does map(&:name) mean in Ruby?
...
It's shorthand for tags.map(&:name.to_proc).join(' ')
If foo is an object with a to_proc method, then you can pass it to a method as &foo, which will call foo.to_proc and use that as the method's block.
The Symbol#to_proc method was originally added by ActiveSupport but has...
php中0,null,empty,空,false,字符串关系详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个测试还是很需要的。
这是关键的一个例子：
<?php
if('safdasefasefasf'==0){
echo "该字符串转换为数字 等于 0 <br/>";
} //output:该字符串转换为数字 等于零。
?>
手册上有解释：该值由字符串最前面的部分决定。如果字符串以合...
You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7
...
First, check to make sure that rake is mentioned in your Gemfile. If it's not, add it, and specify the version "you already activated".
Then, you'll need to tell bundle to update the rake version it's using for your app:
bundle update rake
It'll update your Gemfile.lock for you.
...
Utility classes are evil? [closed]
... should represent a single thing and all of its attributes and operations. If you are operating on a thing, that method should probably be a member of that thing.
However, there are times when you can use utility classes to group a number of methods together — an example being the java.util.Colle...
How do I redirect in expressjs while passing some context?
I am using express to make a web app in node.js. This is a simplification of what I have:
8 Answers
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Go install fails with error: no install location for directory xxx outside GOPATH
...domain name, to avoid name clashing (e.g. github.com/you/go-statsd-client, if that's where you hold your source code).
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How to calculate the SVG Path for an arc (of a circle)
...ul, thanks. The only thing I found is that the largeArc logic doesn't work if you use negative angles. This works -360 to +360: jsbin.com/kopisonewi/2/edit?html,js,output
– Xcodo
Sep 7 '16 at 8:58
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What is the difference between Int and Integer?
In Haskell, what is the difference between an Int and an Integer ? Where is the answer documented?
6 Answers
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