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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 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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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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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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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...
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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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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Xcode iOS 8 Keyboard types not supported
...n told). If you can build and run on a release build of Xcode without this error, then it is not your app that has the problem.
Not 100% on this, but see if this fixes the problem:
iOS Simulator -> Hardware -> Keyboard -> Toggle Software Keyboard.
Then, everything works
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Error: “Cannot modify the return value” c#
...t affect the underlying field. The compiler detects this and gives you an error since this operation is entirely useless.
Even if you used your own backing variable your get would look like:-
get { return myOrigin; }
You'd still be returning a copy of the Point structure and you'd get the same ...
Best practice to validate null and empty collection in Java
... iczaicza
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