大约有 40,000 项符合查询结果(耗时:0.0576秒) [XML]

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Why can't I define a default constructor for a struct in .NET?

...type a default constructor is created (by the compiler?) which initialized all members to zero (or null ). 10 Answers ...
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Does Ruby regular expression have a not match operator like “!~” in Perl?

... David HempyDavid Hempy 2,32322 gold badges2121 silver badges4545 bronze badges add a c...
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Why rename synthesized properties in iOS with leading underscores? [duplicate]

...s is an artifact of a previous version of the Objective-C runtime. Originally, @synthesize was used to create accessors methods, but the runtime still required that instance variables had to be instantiated explicitly: @interface Foo : Bar { Baz *_qux; } @property (retain) Baz *qux; @end @imp...
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How to paste over without overwriting register

Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register? ...
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LINQ Distinct operator, ignore case?

... Dave New 32.1k4040 gold badges165165 silver badges355355 bronze badges answered Nov 12 '08 at 6:42 AshAsh ...
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Does Dart support enumerations?

...ase Fruit.apple: print('it is an apple'); break; } // get all the values of the enums for (List<Fruit> value in Fruit.values) { print(value); } // get the second value print(Fruit.values[1]); } The old approach before 1.8: class Fruit { static const APPLE =...
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CSS table layout: why does table-row not accept a margin?

...ered Jan 2 '10 at 23:42 richardtallentrichardtallent 31.4k1313 gold badges7575 silver badges111111 bronze badges ...
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How do I correctly clone a JavaScript object?

... if you know its name, but I don't know of any way to discover it automatically. Yet another snag in the quest for an elegant solution is the problem of setting up the prototype inheritance correctly. If your source object's prototype is Object, then simply creating a new general object with {} wil...
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Is there a function to make a copy of a PHP array to another?

...ewLarsson raises a point in the comments below. PHP has a special feature called "references". They are somewhat similar to pointers in languages like C/C++, but not quite the same. If your array contains references, then while the array itself is passed by copy, the references will still resolve to...
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Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table?

...p as sleeping in the processlist! I was tearing my hair out until I killed all the threads that were open in the database in question, sleeping or not. That finally unlocked the table and let the update query run. The commenter mentioned something like "Sometimes a MySQL thread locks a table, then s...