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Export and Import all MySQL databases at one time
I want to keep a backup of all my MySQL databases. I have more than 100 MySQL databases. I want to export all of them at the same time and again import all of them into my MySQL server at one time. How can I do that?
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Java 8: performance of Streams vs Collections
...aced with Iterable.forEach() and Collection.removeIf() calls). Streams are more about coding convenience and safety. Convenience -- speed tradeoff is working here.
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RE error: illegal byte sequence on Mac OS X
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The problem is that the input file's encoding does not match the shell's.
More specifically, the input file contains characters encoded in a way that is not valid in UTF-8 (as @Klas Lindbäck stated in a comment) - that's what the sed error message is trying to say by invalid byte sequence.
Most l...
Check variable equality against a list of values
...acters. For special characters is becomes ugly due to escaping and is also more error-prone due to that.
/foo|bar|something/.test(str);
To be more precise, this will check the exact string, but then again is more complicated for a simple equality test:
/^(foo|bar|something)$/.test(str);
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Sorting a list using Lambda/Linq to objects
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How to show loading spinner in jQuery?
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How do I remove a submodule?
...h "git submodule init" the user is able to tell git they care about one or more submodules and wants to have it populated on the next call to "git submodule update".
But currently there is no easy way they can tell git they do not care about a submodule anymore and wants to get rid of the local wo...
How does `is_base_of` work?
...t<B, D>&)
This would mean that we can't select by constness anymore. In an ordinary overload resolution scenario, the call would now be ambiguous because normally the return type won't participate in overload resolution. For conversion functions, however, there is a backdoor. If two conv...
How to group dataframe rows into list in pandas groupby?
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