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Difference between & and && in Java? [duplicate]
I was just wondering what the difference between & and && is?
A few days I wrote a condition for an if statement the looked something like:
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How do I replace multiple spaces with a single space in C#?
... @Shiva, /\s\s+/ is a standard POSIX regex statement and may be converted/used in any language using own syntax
– radistao
Apr 29 '14 at 6:45
4
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Double vs single quotes
... -> get special character
puts '\1' -> get \1
so looks like * was convert to escaped character in double quotes, but not in single quotes.
BTW, it will impact the output when using in regular expression
e.g.,
str.gsub(/regular expression/, '\1,\2')
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Change EOL on multiple files in one go
... files are not already unix-style. Since replacing \n with \r\n will also convert \r\n to \r\r\n.
– Kirk Woll
Jan 10 '14 at 21:41
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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
... began with the move semantics. Once we have expressions that can be moved and not copied, suddenly easy to grasp rules demanded distinction between expressions that can be moved, and in which direction.
From what I guess based on the draft, the r/l value distinction stays the same, only in the con...
Understanding slice notation
...t value that is not in the selected slice. So, the difference between stop and start is the number of elements selected (if step is 1, the default).
The other feature is that start or stop may be a negative number, which means it counts from the end of the array instead of the beginning. So:
a[-1]...
Cannot delete directory with Directory.Delete(path, true)
...he workings of Directory.Delete. Please read the comments for this answer, and other answers to this question.
I ran into this problem before.
The root of the problem is that this function does not delete files that are within the directory structure. So what you'll need to do is create a functi...
Stack, Static, and Heap in C++
...ese three concepts. When do I have to use dynamic allocation (in the heap) and what's its real advantage? What are the problems of static and stack? Could I write an entire application without allocating variables in the heap?
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How does one make an optional closure in swift?
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@Cezar Could you please explain a bit why and where to use "Optional closure", I am curious to know this.
– iLearner
Apr 6 '19 at 14:17
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What is the best way to get all the divisors of a number?
...e dumb way (stopping at n/2) very cool, thank you!
– Andrea Ambu
Oct 5 '08 at 10:20
47
For those ...