大约有 42,000 项符合查询结果(耗时:0.0292秒) [XML]

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Change IPython/Jupyter notebook working directory

... That worked for me on windows 10 pro. Just open CMD and type: jupyter notebook --notebook-dir="D:\change_this_path" – TharsDimitris Dec 14 '18 at 9:11 ...
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FirstOrDefault: Default value other than null

As I understand it, in Linq the method FirstOrDefault() can return a Default value of something other than null. What I haven't worked out is what kind of things other than null can be returned by this (and similar) method when there are no items in the query result. Is there any particular wa...
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How do I use reflection to call a generic method?

...rs public instance methods by default, so you may need BindingFlags.Static and/or BindingFlags.NonPublic. – user565869 Dec 16 '11 at 22:32 20 ...
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What does enumerable mean?

... An enumerable property is one that can be included in and visited during for..in loops (or a similar iteration of properties, like Object.keys()). If a property isn't identified as enumerable, the loop will ignore that it's within the object. var obj = { key: 'val' }; console...
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File I/O in Every Programming Language [closed]

...the file. Therefore, the invokation of readlines() results in reading each and every line of the file. In that particular case it's fine to use readlines() because we have to read the entire file anyway (we want its last line). But if our file contains many lines and we just want to print its nth li...
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NSLog the method name with Objective-C in iPhone

...e defining ourselves an extended log mechanism to print out the class name and the source line number of the log. 6 Answer...
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Create a GUID in Java

... Have a look at the UUID class bundled with Java 5 and later. For example: If you want a random UUID you can use the randomUUID method. If you want a UUID initialized to a specific value you can use the UUID constructor or the fromString method. ...
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How do you get a string to a character array in JavaScript?

...o make a array of a string? A string is already an array or am I wrong? "randomstring".length; //12 "randomstring"[2]; //"n" – Luigi van der Pal Dec 8 '16 at 11:19 ...
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How to use unicode characters in Windows command line?

...s we've stumbled upon a problem - we can't pass the š letter to the command-line tools. The command prompt or what not else messes it up, and the tf.exe utility can't find the specified project. ...
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A python class that acts like dict

...ict actually contains 2 dict-instance: The 1st is the inherited container, and the 2nd is the dict holding the class-attributes - you may avoid that by using slots. – ankostis Mar 4 '16 at 10:37 ...