大约有 30,000 项符合查询结果(耗时:0.0472秒) [XML]

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getenv() vs. $_ENV in PHP

What is the difference between getenv() and $_ENV ? 6 Answers 6 ...
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How to create duplicate allowed attributes

I'm using a custom attribute inherited from an attribute class. I'm using it like this: 6 Answers ...
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NameError: global name 'unicode' is not defined - in Python 3

I am trying to use a Python package called bidi. In a module in this package (algorithm.py) there are some lines that give me error, although it is part of the package. ...
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Run a callback only if an attribute has changed in Rails

I have the following association in my app: 3 Answers 3 ...
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation

It is loosely related to this question: Are std::thread pooled in C++11? . Though the question differs, the intention is the same: ...
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How to get the list of all printers in computer

I need to get the list of all printers that connect to computer? 6 Answers 6 ...
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Private vs Public in Cache-Control

Can you please describe an example indicating difference between Public and Private Cache-Control in asp.net applications hosted in IIS. ...
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Rails 3: I want to list all paths defined in my rails application

I want to list all defined helper path functions (that are created from routes) in my rails 3 application, if that is possible. ...
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Python memory usage of numpy arrays

... into memory issues, so I've been using sys.getsizeof() to try and keep track of the usage, but it's behaviour with numpy arrays is bizarre. Here's an example involving a map of albedos that I'm having to open: ...
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lock(new object()) — Cargo cult or some crazy “language special case”?

I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet: ...