大约有 45,000 项符合查询结果(耗时:0.0361秒) [XML]

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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?

...emplates to set default values for local variables if a value wasn't explicitly defined in the :locals hash when rendering the partial -- ...
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

...compilers) just used whatever overflow behaviour was easiest to implement with the integer representation it used. C implementations usually used the same representation used by the CPU - so the overflow behavior followed from the integer representation used by the CPU. In practice, it is only the r...
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Try-finally block prevents StackOverflowError

... It doesn't run forever. Each stack overflow causes the code to move to the finally block. The problem is that it will take a really, really long time. The order of time is O(2^N) where N is the maximum stack depth. Imagine t...
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Is a url query parameter valid if it has no value?

...ode The URI RFC doesn't mandate a format for the query string. Although it is recognized that the query string will often carry name-value pairs, it is not required to (e.g. it will often contain another URI). 3.4. Query The query component contains non-hierarchical data that, along wit...
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Can you add new statements to Python's syntax?

Can you add new statements (like print , raise , with ) to Python's syntax? 13 Answers ...
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Default implementation for Object.GetHashCode()

How does the default implementation for GetHashCode() work? And does it handle structures, classes, arrays, etc. efficiently and well enough? ...
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Should I use PATCH or PUT in my REST API?

I want to design my rest endpoint with the appropriate method for the following scenario. 6 Answers ...
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Thread-safe List property

...entation of List<T> as a property which can be used thread-safely without any doubt. 16 Answers ...
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Why does 2 == [2] in JavaScript?

I recently discovered that 2 == [2] in JavaScript. As it turns out, this quirk has a couple of interesting consequences: ...
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Why would I make() or new()?

...nce between new() and make() , but in practice, you can create objects within local scope and return them. 7 Answers ...