大约有 44,255 项符合查询结果(耗时:0.0437秒) [XML]

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'id' is a bad variable name in Python

Why is it bad to name a variable id in Python? 9 Answers 9 ...
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How would I run an async Task method synchronously?

I'm learning about async/await, and ran into a situation where I need to call an async method synchronously. How can I do that? ...
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Returning a boolean from a Bash function

I want to write a bash function that check if a file has certain properties and returns true or false. Then I can use it in my scripts in the "if". But what should I return? ...
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Intent - if activity is running, bring it to front, else start a new one (from notification)

My app has notifications, which - obviously - without any flags, start a new activity every time so I get multiple same activities running on top of each other, which is just wrong. ...
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Why is “while ( !feof (file) )” always wrong?

...e to provide an abstract, high-level perspective. Concurrency and simultaneity I/O operations interact with the environment. The environment is not part of your program, and not under your control. The environment truly exists "concurrently" with your program. As with all things concurrent, question...
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Boolean method naming readability

Simple question, from a readability standpoint, which method name do you prefer for a boolean method: 12 Answers ...
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Should I return a Collection or a Stream?

... The answer is, as always, "it depends". It depends on how big the returned collection will be. It depends on whether the result changes over time, and how important consistency of the returned result is. And it depends very much on how the user is l...
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Why doesn't the height of a container element increase if it contains floated elements?

...t and float work. I have an outer div and an inner div that has content in it. Its height may vary depending on the content of the inner div but it seems that my inner div will overflow its outside div. What would be the proper way to do it? ...
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Database development mistakes made by application developers [closed]

... 1. Not using appropriate indices This is a relatively easy one but still it happens all the time. Foreign keys should have indexes on them. If you're using a field in a WHERE you should (probably) have an index on it. Such indexes should often cover multiple columns based on the queries you nee...
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Why is there no logical xor in JavaScript?

... JavaScript traces its ancestry back to C, and C does not have a logical XOR operator. Mainly because it's not useful. Bitwise XOR is extremely useful, but in all my years of programming I have never needed a logical XOR. If you have two boole...