大约有 40,000 项符合查询结果(耗时:0.0639秒) [XML]

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How do I check (at runtime) if one class is a subclass of another?

... If there's one thing that's a constant on Stack Overflow, it is that any questions with an answer that implies isinstance or issubclass will also be accompanied with lectures about duck typing! – B Robster ...
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How do I clear the std::queue efficiently?

...obQueue class. ( Basically this class process each job in FIFO manner). In one scenario, I want to clear the queue in one shot( delete all jobs from the queue). I don't see any clear method available in std::queue class. ...
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linux: kill background task

... Assuming the ???? stands for one or more commands to be executed after the kill, if any of those commands relies on work done by the background process, be mindful of any cleanup or finishing-up tasks which the background process might perform in a signa...
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Truncate all tables in a MySQL database in one command?

Is there a query (command) to truncate all the tables in a database in one operation? I want to know if I can do this with one single query. ...
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What is a singleton in C#?

... A singleton is a class which only allows one instance of itself to be created - and gives simple, easy access to said instance. The singleton premise is a pattern across software development. There is a C# implementation "Implementing the Singleton Pattern in C#" c...
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Mutex example / tutorial? [closed]

...world: (a color coded version on my blog too) A lot of people run to a lone phone booth (they don't have mobile phones) to talk to their loved ones. The first person to catch the door-handle of the booth, is the one who is allowed to use the phone. He has to keep holding on to the handle of the d...
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Why do I need an IoC container as opposed to straightforward DI code? [closed]

... Whatever this is (IoC, DynamicProxy, AOP or black magic) can someone link me to a concrete article/specific documentation in framework that provides more details for achieving this? – fostandy May 19 '10 at 6:38 ...
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Professional jQuery based Combobox control? [closed]

...ons that I know of. Good luck in your search. I'd love to hear if you find one or if the second option works out for you. share | improve this answer | follow ...
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RegEx for Javascript to allow only alphanumeric

I need to find a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both. ...
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How to insert a new line in Linux shell script? [duplicate]

... but what would be the equivalent for echo "i want to be on one line" echo "i want to be on another" by using one echo command, and just \n, so that when you have long sentences, you can wrap your text in bash(using maybe 3 or 4 bash lines atleast with only one echo command. I came ...