大约有 37,000 项符合查询结果(耗时:0.0589秒) [XML]

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What is the best way to repeatedly execute a function every x seconds?

I want to repeatedly execute a function in Python every 60 seconds forever (just like an NSTimer in Objective C). This code will run as a daemon and is effectively like calling the python script every minute using a cron, but without requiring that to be set up by the user. ...
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JavaScript check if variable exists (is defined/initialized)

...| edited Nov 27 '14 at 14:04 Silveri 3,38622 gold badges2929 silver badges3232 bronze badges answered Fe...
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How do you do Impersonation in .NET?

... 60 Here is some good overview of .NET impersonation concepts. Michiel van Otegem: WindowsImperson...
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Java - Convert integer to string [duplicate]

... 840 There are multiple ways: String.valueOf(number) (my preference) "" + number (I don't know how ...
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How are Python's Built In Dictionaries Implemented?

...w is a logical representation of a Python hash table. In the figure below, 0, 1, ..., i, ... on the left are indices of the slots in the hash table (they are just for illustrative purposes and are not stored along with the table obviously!). # Logical model of Python Hash table -+---------------...
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Why doesn't Java allow overriding of static methods?

... answered Feb 8 '10 at 17:12 Nathan HughesNathan Hughes 82k1919 gold badges154154 silver badges239239 bronze badges ...
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Why doesn't Console.Writeline, Console.Write work in Visual Studio Express?

... 306 Console.WriteLine writes your output to the console window opened by your application (think bl...
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Can't connect to localhost on SQL Server Express 2012 / 2016

I just downloaded the latest version of SQL Express 2012 but I cannot connect to localhost. I tried localhost\SQLExpress and Windows authentication but it gives me an error message saying cannot connect. Am I missing something here? I've used SQL Server 2008 before and I've never had issues connecti...
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“Application tried to present modally an active controller”?

... 104 Assume you have three view controllers instantiated like so: UIViewController* vc1 = [[UIViewC...
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Trouble comparing time with RSpec

...of my answer – usha Dec 5 '13 at 16:09 3 The accepted answer is nearly a year older than the answ...