大约有 8,200 项符合查询结果（耗时：0.0277秒） [XML]
Is there a regular expression to detect a valid regular expression?
Is it possible to detect a valid regular expression with another regular expression? If so please give example code below.
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What are good uses for Python3's “Function Annotations”
Function Annotations: PEP-3107
12 Answers
12
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Pair/tuple data type in Go
...ercise of the Tour of Go , I decided I needed a queue of ( string , int ) pairs. That's easy enough:
3 Answers
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schema builder laravel migrations unique on two columns
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The second param is to manually set the name of the unique index. Use an array as the first param to create a unique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(...
Using .otf fonts on web browsers
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You can implement your OTF font using @font-face like:
@font-face {
font-family: GraublauWeb;
src: url("path/GraublauWeb.otf") format("opentype");
}
@font-face {
font-family: GraublauWeb;
font-weight: bold;
src: ur...
Using semicolon (;) vs plus (+) with exec in find
Why is there a difference in output between using
6 Answers
6
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PhpStorm wrap/surround selection?
Often in coding and templating I need to wrap a certain part of text. Is there any shortcut to wrap the current selection, for example:
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How to create duplicate allowed attributes
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Stick a AttributeUsage attribute onto your Attribute class (yep, that's mouthful) and set AllowMultiple to true:
[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
public sealed class MyCustomAttribute: Attribute
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How to attach javadoc or sources to jars in libs folder?
New version of ADT r17 plugin for Eclipse added feature to automatically setup JAR dependencies. Any .jar files in the /libs folder are added to the build configuration now. Unfortunately Android Dependencies classpath container is non modifiable.
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How does Google's Page Speed lossless image compression work?
When you run Google's PageSpeed plugin for Firebug/Firefox on a website it will suggest cases where an image can be losslessly compressed, and provide a link to download this smaller image.
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