大约有 3,800 项符合查询结果(耗时:0.0308秒) [XML]

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What does Ruby have that Python doesn't, and vice versa?

..., 2, 3, 4].each{ |e| puts e + 5 } > [6, 7, 8, 9] Python has anonymous functions/closures/lambdas, but it doesn't quite have blocks since it's missing some of the useful syntactic sugar. However, there's at least one way to get it in an ad-hoc fashion. See, for example, here. ...
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What's the difference between interface and @interface in java?

...above annotation, you could use code like this: @MyAnnotation( value="123", name="Jakob", age=37, newNames={"Jenkov", "Peterson"} ) public class MyClass { } Reference - http://tutorials.jenkov.com/java/annotations.html ...
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How many constructor arguments is too many?

...hSurname("Smith") .withFirstName("Fred") .withSsn("123XS1") .build(); } } share | improve this answer | follow | ...
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Reference assignment operator in PHP, =&

... 123 It's not deprecated and is unlikely to be. It's the standard way to, for example, make part of...
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Coding in Other (Spoken) Languages

...ce I don't speak a word of that language, stuff could have been called var_123, var_562 or func_333 as well (and probably it would have been easier for me to remember the names or at least to have a chance of spelling them right without copying and pasting). Since this was a short, self-contained sn...
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How to return result of a SELECT inside a function in PostgreSQL?

...guity END $func$ LANGUAGE plpgsql; Call: SELECT * FROM word_frequency(123); Explanation: It is much more practical to explicitly define the return type than simply declaring it as record. This way you don't have to provide a column definition list with every function call. RETURNS TABLE is ...
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?

... so counter-intuitive, though it does have one very important application: functions. trait Function1[-P, +R] { def apply(p: P): R } Notice the "-" variance annotation on the P type parameter. This declaration as a whole means that Function1 is contravariant in P and covariant in R. Thus, we ...
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How do I initialize the base (super) class?

...): pass class Y(X): def __init__(self): super(Y, self).__init__(123) def doit(self, foo): return super(Y, self).doit(foo) Because python knows about old- and new-style classes, there are different ways to invoke a base method, which is why you've found multiple ways of doing so. ...
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What is the most efficient/elegant way to parse a flat table into a tree?

...g with this data to display a tree, I created a tree_item_iterator utility function which, for each node, should give you sufficient information to generate whatever kind of display you want. More info about MPTT: Trees in SQL Storing Hierarchical Data in a Database Managing Hierarchical Data in ...
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Choose Git merge strategy for specific files (“ours”, “mine”, “theirs”)

... 123 Even though this question is answered, providing an example as to what "theirs" and "ours" mea...