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Regex for string not ending with given suffix
... find a proper regex to match any string not ending with some condition. For example, I don't want to match anything ending with an a .
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Which one will execute faster, if (flag==0) or if (0==flag)?
...uestion" because it seems that many did not get it right and it gives room for a nice discussion on compiler optimization :)
The answer is:
What is flag's type?
In the case where flag actually is a user-defined type. Then it depends on which overload of operator== is selected. Of course it ca...
How to remove leading zeros from alphanumeric text?
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Regex is the best tool for the job; what it should be depends on the problem specification. The following removes leading zeroes, but leaves one if necessary (i.e. it wouldn't just turn "0" to a blank string).
s.replaceFirst("^0+(?!$)", "")
The ...
TCP: can two different sockets share a port?
...e system resources allow it to.
On the client-side, it is common practice for new outbound connections to use a random client-side port, in which case it is possible to run out of available ports if you make a lot of connections in a short amount of time.
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How to test valid UUID/GUID?
... here. The following regex takes this into account and will return a match for a NIL UUID. See below for a UUID which only accepts non-NIL UUIDs. Both of these solutions are for versions 1 to 5 (see the first character of the third block).
Therefore to validate a UUID...
/^[0-9a-f]{8}-[0-9a-f]{4}-...
Fastest way to reset every value of std::vector to 0
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this is not exactly what OP asked for, but simply reassigning your vector to a new one of the same size (v = std::vector<int>(vec_size,0)) seems slightly faster than fill on my machine
– Yibo Yang
Jun 16 '17 at 4:0...
Is it correct to use JavaScript Array.sort() method for shuffling?
...ctly even over its range. Given that there are usually 2^x possible states for the RNG for some x, I don't think it'll be exactly even for rand(3).
– Jon Skeet
Jun 8 '09 at 5:28
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Regular expressions in C: examples?
...ee(&regex);
Alternatively, you may want to check out PCRE, a library for Perl-compatible regular expressions in C. The Perl syntax is pretty much that same syntax used in Java, Python, and a number of other languages. The POSIX syntax is the syntax used by grep, sed, vi, etc.
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Center a map in d3 given a geoJSON object
...ght)
d3.json("nld.json", function(json) {
// create a first guess for the projection
var center = d3.geo.centroid(json)
var scale = 150;
var offset = [width/2, height/2];
var projection = d3.geo.mercator().scale(scale).center(center)
.translate(offset);
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Javascript seconds to minutes and seconds
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This solution won't work for negative values of time. If you for instance input -1 seconds, you get -1minute and 59 seconds back...
– Pylinux
Oct 20 '13 at 18:10
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