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sed error: “invalid reference \1 on `s' command's RHS”
...t/' works but sed -e 's/([[:digit:]])/\1 is a digit/ produces the original error without -r to sed. NOTE: the first invocation of sed searches for a literal (<digit>) and is not a capture group.
– Andrew Falanga
Mar 24 '16 at 14:58
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Cleanest way to write retry logic?
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+1, especially for the warning and error-checking. I'd be more comfortable if this passed in the type of the exception to catch as a generic parameter (where T: Exception), though.
– TrueWill
Oct 13 '09 at 22:55
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cleanest way to skip a foreach if array is empty [duplicate]
... code with an unnecessary if statement. If $items is empty php throws an error.
11 Answers
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
...of a lot of people, but not of everyone. I don't think it's necessarily an error to treat C++ source as a plain text file, rather than the output of a WYSIWYG editor (vi/emacs/Visual Studio) that enforces formatting rules. So this rule is editor-agnostic beyond what you need, but not beyond what peo...
Is errno thread-safe?
...my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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MsDeploy is returning 403 forbidden
...uation. At least you won't get 403's but you may have some other MsDeploy error.
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INSERT … ON DUPLICATE KEY (do nothing)
...row update even though id is assigned to itself).
If you don't care about errors (conversion errors, foreign key errors) and autoincrement field exhaustion (it's incremented even if the row is not inserted due to duplicate key), then use INSERT IGNORE.
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How to fix 'sudo: no tty present and no askpass program specified' error?
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Try:
ssh -t remotehost "sudo <cmd>"
This will remove the above errors.
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Eclipse executable launcher error: Unable to locate companion shared library
...am files have completely disappeared. When I try to reinstall it, I get an error message that says
29 Answers
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Right HTTP status code to wrong input
...t is optimal HTTP response Code when not reporting 200 (everything OK) but error in input?
6 Answers
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