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What is the difference between single-quoted and double-quoted strings in PHP?

...ouble quotes inside of double quotes must be escaped: $string = 'He said "What\'s up?"'; $string = "He said \"What's up?\""; Speed: I would not put too much weight on single quotes being faster than double quotes. They probably are faster in certain situations. Here's an article explaining one ma...
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What's default HTML/CSS link color?

...values did come from a standard, for which this answer provides no sources whatsoever, that standard would have long been obsolete anyway as this answer implies, and using it in new code would be meaningless. – BoltClock♦ May 4 '14 at 13:25 ...
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Files showing as modified directly after a Git clone

... can anyone shed more light on this particular configuration? What does * text=auto do? What does it mean to remove it from .gitattributes? I see it fixes this problem for me, but I am not sure why it does so, and what it is really doing, and what possible issues it is possibly creati...
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What is the difference between `sorted(list)` vs `list.sort()`?

... What is the difference between sorted(list) vs list.sort()? list.sort mutates the list in-place & returns None sorted takes any iterable & returns a new list, sorted. sorted is equivalent to this Python implement...
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How to convert a factor to integer\numeric without loss of information?

... of the function. Therefore it doesn't really give a better solution than what the asker already had. – CJB Jan 25 '16 at 9:32 ...
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?

...epresentable range of integers. Consider: If floor() returned an integer, what should floor(1.0e30) return? Now, while Python's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions. ...
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Can I change the size of UIActivityIndicator?

Whatever size i give to it while allocation, it shows fixed size only. Is it possible to increase it? 9 Answers ...
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What's “requestCode” used for on PendingIntent?

...about it? Is it possible to remove all alarms of a certain type, no matter what is the requestCode? – android developer Feb 3 '14 at 12:36 ...
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Aren't promises just callbacks?

...ore readable. But this is not the end. Let's discover the true benefits: What if you wanted to check for any error in any of the steps? It would be hell to do it with callbacks, but with promises, is a piece of cake: api().then(function(result){ return api2(); }).then(function(result2){ r...
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What's the best way to send a signal to all members of a process group?

I want to kill a whole process tree. What is the best way to do this using any common scripting languages? I am looking for a simple solution. ...