大约有 47,000 项符合查询结果（耗时：0.0570秒） [XML]
In which scenario do I use a particular STL container?
...in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used.
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How can I prevent the “You have mixed tabs and spaces. Fix this?” message?
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This needs to be updated for VS2017 now. As it turns out, this is its own extension that can be disabled now
– Joe Phillips
Mar 7 '17 at 16:53
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Map enum in JPA with fixed values?
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This is now possible with JPA 2.1:
@Column(name = "RIGHT")
@Enumerated(EnumType.STRING)
private Right right;
Further details:
http://java.dzone.com/articles/mapping-enums-done-right
http://www.thoughts-on-java.org/jpa-21-how-to-...
Convert list to tuple in Python
...nce you have used a tuple variable to hold a tuple (45, 34) earlier... So, now tuple is an object of type tuple now...
It is no more a type and hence, it is no more Callable.
Never use any built-in types as your variable name... You do have any other name to use. Use any arbitrary name for your va...
What's the difference between console.dir and console.log?
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Now it seems that console.log and console.dir actually return the same representation on [1,2,3] in Firefox.
– xji
Jun 18 '18 at 16:27
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What do the &,
Up until now I have only used database.yml with each parameter called out explicitly, in the file below it uses some characters I do not understand. What does each line and symbol(&,*,
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How to split a long regular expression into multiple lines in JavaScript?
... function(reg){ return reg.source; }
).join(''), options);
}
And now let's rock
var r = multilineRegExp([
/^foo/, // we can add comments too
/(.*)/,
/\bar$/
]);
Since it has a cost, try to build the real regex just once and then use that.
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How can I make a time delay in Python? [duplicate]
I would like to know how to put a time delay in a Python script.
13 Answers
13
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How to convert a byte array to a hex string in Java?
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@maybeWeCouldStealAVan: JDK 7 is now open source. We should submit a patch to improve performance for printHexBinary?
– kevinarpe
Jul 10 '13 at 17:05
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HTML table headers always visible at top of window when viewing a large table
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Could you add a fiddle with a working code? (I know that there is in the site...)
– Michel Ayres
Mar 14 '14 at 14:53
12
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