大约有 43,000 项符合查询结果(耗时:0.1070秒) [XML]

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Random Gaussian Variables

Is there a class in the standard library of .NET that gives me the functionality to create random variables that follow Gaussian distribution? ...
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What does ON [PRIMARY] mean?

I'm creating an SQL setup script and I'm using someone else's script as an example. Here's an example of the script: 4 Ans...
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How do I find the duplicates in a list and create another list with them?

How can I find the duplicates in a Python list and create another list of the duplicates? The list only contains integers. ...
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How to detect the OS from a Bash script?

I would like to keep my .bashrc and .bash_login files in version control so that I can use them between all the computers I use. The problem is I have some OS specific aliases so I was looking for a way to determine if the script is running on Mac OS X, Linux or Cygwin . ...
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Is there an “exists” function for jQuery?

... In JavaScript, everything is 'truthy' or 'falsy', and for numbers 0 means false, everything else true. So you could write: if ($(selector).length) You don't need that >0 part. share | ...
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Is it possible to simulate key press events programmatically?

... A non-jquery version that works in both webkit and gecko: var keyboardEvent = document.createEvent("KeyboardEvent"); var initMethod = typeof keyboardEvent.initKeyboardEvent !== 'undefined' ? "initKeyboardEvent" : "initKeyEvent"; keyboardEvent[initMethod]( "keydown", /...
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Can anyone explain this strange behavior with signed floats in C#?

...When at least one field is not 8 bytes wide, CanCompareBits returns false, and the code proceeds to use reflection to loop over the fields and call Equals for each value, which correctly treats -0.0 as equal to 0.0. Here is the source for CanCompareBits from SSCLI: FCIMPL1(FC_BOOL_RET, ValueTypeHe...
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How can I verify if one list is a subset of another?

...answer to your question, however. A list may contain items multiple times and has a specific order. A set does not. Additionally, sets only work on hashable objects. Are you asking about subset or subsequence (which means you'll want a string search algorithm)? Will either of the lists be the sam...
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SQL Server: Get table primary key using sql query [duplicate]

...CONSTRAINT_SCHEMA + '.' + QUOTENAME(CONSTRAINT_NAME)), 'IsPrimaryKey') = 1 AND TABLE_NAME = 'TableName' AND TABLE_SCHEMA = 'Schema' share | improve this answer | follow ...
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On - window.location.hash - Change?

I am using Ajax and hash for navigation. 13 Answers 13 ...