大约有 18,000 项符合查询结果(耗时:0.0384秒) [XML]

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Python, compute list difference

In Python, what is the best way to compute the difference between two lists? 14 Answers ...
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How to check if a map contains a key in Go?

I know I can iterate over a map m by, 10 Answers 10 ...
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Python integer division yields float

Is this intended? I strongly remember earlier versions returning int/int=int ? What should I do, is there a new division operator or must I always cast? ...
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Setting HttpContext.Current.Session in a unit test

I have a web service I am trying to unit test. In the service it pulls several values from the HttpContext like so: 14 A...
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Length of string in bash

... would like to show the difference between string length and byte length: myvar='Généralités' chrlen=${#myvar} oLang=$LANG oLcAll=$LC_ALL LANG=C LC_ALL=C bytlen=${#myvar} LANG=$oLang LC_ALL=$oLcAll printf "%s is %d char len, but %d bytes len.\n" "${myvar}" $chrlen $bytlen will render: Génér...
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How do I use vi keys in ipython under *nix?

Currently in Bash I use set -o vi to enable vi mode in my bash prompt. 6 Answers 6 ...
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Best way to define private methods for a class in Objective-C

I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs deal with private methods. ...
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Does ruby have real multithreading?

...of ruby using green threads . How can I create real "OS-level" threads in my applim>catm>ion in order to make use of multiple cpu cores for processing? ...
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How to create module-wide variables in Python? [duplim>catm>e]

Is there a way to set up a global variable inside of a module? When I tried to do it the most obvious way as appears below, the Python interpreter said the variable __DBNAME__ did not exist. ...
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Why should hash functions use a prime number modulus?

A long time ago, I bought a data structures book off the bargain table for $1.25. In it, the explanation for a hashing function said that it should ultimately mod by a prime number because of "the nature of math". ...