大约有 41,000 项符合查询结果(耗时:0.0569秒) [XML]

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Using str_replace so that it only acts on the first match?

I want a version of str_replace() that only replaces the first occurrence of $search in the $subject . Is there an easy solution to this, or do I need a hacky solution? ...
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grep, but only certain file extensions

I am working on writing some scripts to grep certain directories, but these directories contain all sorts of file types. ...
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How to parse float with two decimal places in javascript?

I have the following code. I would like to have it such that if price_result equals an integer, let's say 10, then I would like to add two decimal places. So 10 would be 10.00. Or if it equals 10.6 would be 10.60. Not sure how to do this. ...
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How to flip windows in vim? [duplicate]

If I have 2 horizontally split windows, how to rotate them to get 2 vertically split windows? 4 Answers ...
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How to identify platform/compiler from preprocessor macros?

I'm writing a cross-platform code, which should compile at linux, windows, Mac OS. On windows, I must support visual studio and mingw. ...
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Understanding ibeacon distancing

Trying to grasp a basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this? ...
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install / uninstall APKs programmatically (PackageManager vs Intents)

My application installs other applications, and it needs to keep track of what applications it has installed. Of course, this could be achieved by simply keeping a list of installed applications. But this should not be necessary! It should be the responsibility of the PackageManager to maintain the ...
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How is an overloaded method chosen when a parameter is the literal null value?

I came across this question in a quiz, 8 Answers 8 ...
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Create a dictionary with list comprehension

I like the Python list comprehension syntax. 14 Answers 14 ...
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Remove all occurrences of char from string

I can use this: 12 Answers 12 ...