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How to check for a valid Base64 encoded string
...ould be:
Regex.IsMatch(s, @"^[a-zA-Z0-9\+/]*={0,2}$")
Only matching one or two trailing '=' signs, not three.
s should be the string that will be checked. Regex is part of the System.Text.RegularExpressions namespace.
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The forked VM terminated without saying properly goodbye. VM crash or System.exit called
... Above did not fix the issue for me. This issue 'may' occur when one of the dependencies(jar etc) in .m2 is corrupt. Deleting ~/.m2/repository rm -rf ~/.m2/repository and then mvn install resolved it for me.
– ch4nd4n
Jun 12 '18 at 12:16
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Is std::vector so much slower than plain arrays?
...n pipeline stages per array accesses. So the vector looks like it is using one extra instruction per accesses.
– Martin York
Sep 8 '10 at 3:25
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Using TortoiseSVN via the command line
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Personally, I prefer this answer to the accepted one: no secondary installations, and full access to the standard SVN command line.
– Haroldo_OK
Feb 22 '13 at 13:38
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Clojure: reduce vs. apply
...there's an optimization. reduce's contract is more precise and thus more prone to general optimization. apply is more vague and thus can only be optimized on a case-by-case basis. str and concat are the two prevalent exceptons.
– cgrand
Aug 22 '13 at 9:41
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Exception thrown in catch and finally clause
... throw the last thrown exception, which in this case it will be always the one from the finally block.
When the first exception from method q() is thrown, it will catch'ed and then swallowed by the finally block thrown exception.
q() -> thrown new Exception -> main catch Exception -> thro...
Changing default encoding of Python?
...cause that answer doesn't help for running existing applications (which is one way to interpret the question), is wrong when you are writing/maintaining an application and dangerous when writing a library. The right way is to set LC_CTYPE (or in an application, check whether it is set right and abor...
SQL Server database backup restore on lower version
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Anyone knows if one can script this procedure in T-SQL? UPDATE (answering myself after a bit of googling): you can automate this via sqlpackage.exe command line. Google for more.
– Alex
Jul...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
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I like that approach! If someone likes keep things close to processing dictionaries, one could also use update() instead of +=: for c in counters[1:]: res.update(c).
– Dr. Jan-Philip Gehrcke
Jan 22 '15 at 21:51
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How to highlight and color gdb output during interactive debugging?
...idwalker
@dholm also provides his own .gdbinit inspired from the previous one.
pwndbg
Some projects provide a set of useful functions, including improved display. This is the case for PEDA or pwndbg. The latter gives the following description:
A PEDA replacement. In the spirit of our good f...