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How to test valid UUID/GUID?
...e is the NIL UUID, noted 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...
/^...
Number of occurrences of a character in a string [duplicate]
...dibly expensive, if the string is large. Worst case if the string is large and (almost) entirely made up of repeated delimiters (&), it could allocate 12-24x the original size of the string due to object overheads in .Net. I would go with the second approach, and if that's not fast enough then w...
How to construct a relative path in Java from two absolute paths (or URLs)?
...java.nio.file.Path#relativize(Path), it just works with parent double-dots and all.
– Campa
Feb 12 '16 at 9:40
Conside...
Cross-browser custom styling for file upload button [duplicate]
...visibility:hidden or display:none file-input). I've tested in emulated IE7 and up, and it worked perfectly.
You can't use <button>s inside <label> tags unfortunately, so you'll have to define the styles for the buttons yourself. To me, this is the only downside to this approach.
If t...
Increment value in mysql update query
...uery has the following note: This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information.
– aland
Mar 24 '...
How does @synchronized lock/unlock in Objective-C?
Does @synchronized not use "lock" and "unlock" to achieve mutual exclusion? How does it do lock/unlock then?
5 Answers
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Directory-tree listing in Python
How do I get a list of all files (and directories) in a given directory in Python?
20 Answers
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Can jQuery get all CSS styles associated with an element?
Is there a way in jQuery to get all CSS from an existing element and apply it to another without listing them all?
5 Answer...
When should I write the keyword 'inline' for a function/method?
... unit but don't complain if it isn't defined. The linker will sort it out and make sure all the code that tried to use some extern symbol has its address.
inline - this function will be defined in multiple translation units, don't worry about it. The linker needs to make sure all translation units...
How to persist a property of type List in JPA?
... My mistake was to add @ OneToMany annotation as well... after removing it and just leaving @ ElementCollection it worked
– Willi Mentzel
Jun 13 '17 at 13:41
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