大约有 42,000 项符合查询结果(耗时:0.0393秒) [XML]

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What is the difference between single-quoted and double-quoted strings in PHP?

I'm a little confused why I see some code in PHP with string placed in single quotes and sometimes in double quotes. 12 Ans...
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When to use inline function and when not to use it?

I know that inline is a hint or request to compiler and its used to avoid function call overheads. 14 Answers ...
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What is the difference between LR, SLR, and LALR parsers?

What is the actual difference between LR, SLR, and LALR parsers? I know that SLR and LALR are types of LR parsers, but what is the actual difference as far as their parsing tables are concerned? ...
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What are the differences between Generics in C# and Javaand Templates in C++? [closed]

I mostly use Java and generics are relatively new. I keep reading that Java made the wrong decision or that .NET has better implementations etc. etc. ...
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Pass a JavaScript function as parameter

How do I pass a function as a parameter without the function executing in the "parent" function or using eval() ? (Since I've read that it's insecure.) ...
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Learning Python from Ruby; Differences and Similarities

I know Ruby very well. I believe that I may need to learn Python presently. For those who know both, what concepts are similar between the two, and what are different? ...
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Is there an SQLite equivalent to MySQL's DESCRIBE [table]?

I'm just getting started learning SQLite . It would be nice to be able to see the details for a table, like MySQL's DESCRIBE [table] . PRAGMA table_info [table] isn't good enough, as it only has basic information (for example, it doesn't show if a column is a field of some sort or not). Does SQL...
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Variable declaration placement in C

I long thought that in C, all variables had to be declared at the beginning of the function. I know that in C99, the rules are the same as in C++, but what are the variable declaration placement rules for C89/ANSI C? ...
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Getting the array length of a 2D array in Java

I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code: ...
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What is the purpose of the “final” keyword in C++11 for functions?

What is the purpose of the final keyword in C++11 for functions? I understand it prevents function overriding by derived classes, but if this is the case, then isn't it enough to declare as non-virtual your final functions? Is there another thing I'm missing here? ...