大约有 48,000 项符合查询结果(耗时:0.0640秒) [XML]

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What's wrong with this 1988 C code?

...When the preprocessor expands them, your code will look roughly like: if (c == ' ' || c == '\n' || c == '\t') state = 0;; /* <--PROBLEM #1 */ else if (state == 0;) { /* <--PROBLEM #2 */ state = 1;; That second semicolon causes the else to have no previous if as a mat...
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Hash function that produces short hashes?

...mospunk: encoding with base64 does nothing for collision resistance, since if hash(a) collides with hash(b) then base64(hash(a)) also collides with base64(hash(b)). – Greg Hewgill Nov 12 '13 at 18:37 ...
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Select top 10 records for each category

... If you are using SQL 2005 you can do something like this... SELECT rs.Field1,rs.Field2 FROM ( SELECT Field1,Field2, Rank() over (Partition BY Section ORDER BY RankCriteria DESC ) AS Ra...
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Remote JMX connection

... I have two questions here - 1) What if one wants to use JMXMP rather than JMX. What would be the configs for that? and 2) Is it possible to make the JMX connection without loading the RMI protocol? – Kumar Vaibhav Feb 17 '...
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Limit the length of a string with AngularJS

...on () { return function (value, wordwise, max, tail) { if (!value) return ''; max = parseInt(max, 10); if (!max) return value; if (value.length <= max) return value; value = value.substr(0, max); if (wordwise) { ...
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Error handling in C code

... I like the error as return-value way. If you're designing the api and you want to make use of your library as painless as possible think about these additions: store all possible error-states in one typedef'ed enum and use it in your lib. Don't just return ints...
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How do I call one constructor from another in Java?

...l a constructor from another (within the same class, not from a subclass)? If yes how? And what could be the best way to call another constructor (if there are several ways to do it)? ...
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Early exit from function?

... You can just use return. function myfunction() { if(a == 'stop') return; } This will send a return value of undefined to whatever called the function. var x = myfunction(); console.log( x ); // console shows undefined Of course, you can specify a different ...
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PHP mail function doesn't complete sending of e-mail

...e a variety of reasons your script appears to not be sending emails. It's difficult to diagnose these things unless there is an obvious syntax error. Without one you need to run through the checklist below to find any potential pitfalls you may be encountering. Make sure error reporting is enabled ...
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Fast check for NaN in NumPy

... This only catches inf or -inf if the input contains both, and it has problems if the input contains large but finite values that overflow when added together. – user2357112 supports Monica Aug 19 '13 at 19:28 ...