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Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
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Remove unused imports in Android Studio
...droid Studio Build 141, Ctrl+Alt+O only optimizes for the current file. In order to optimize your entire project, you will have to follow the right+click method stated above.
– jds17
Jul 3 '15 at 0:07
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Automatically deleting related rows in Laravel (Eloquent ORM)
...ith MyISAM engine doesn't, nor any NoSQL DBs, SQLite in the default setup, etc. Additional problem is that artisan will not warn you about this when you run migrations, it will just not create foreign keys on MyISAM tables and when you later delete a record no cascade will happen. I had this problem...
Delete directory with files in it?
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In order to remove all files from a folder, not only the ones with extensions, use glob in the following way: array_map('unlink', glob("$dirname/*")); This still doesn't allow you to delete directories nested in the folder.
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HTML 5: Is it , , or ?
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Start tags consist of the following
parts, in exactly the following order:
A "<" character.
The element’s tag name.
Optionally, one or more attributes, each of which must be
preceded by one or more space
characters.
Optionally, one or more space characters.
Optionally...
How to import and use different packages of the same name in Go language?
... There is no best language, only languages better for some problems etc.
– Inanc Gumus
Mar 9 at 11:19
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What is the difference between #include and #include “filename”?
...the usual places. Directories named in -I options shall be searched in the order specified. Implementations shall support at least ten instances of this option in a single c99 command invocation.
So, in a POSIX compliant environment, with a POSIX compliant C compiler, #include "file.h" is likely g...
How do I include a path to libraries in g++
...ent variables which can be used to control the include path, library path, etc.
– Ernest Friedman-Hill
Mar 16 '13 at 3:09
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What's the difference between ES6 Map and WeakMap?
...o strings or numbers or Symbols as keys, only arrays, objects, other maps, etc.).
– Ahmed Fasih
Aug 28 '16 at 5:41
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slashes in url variables
...Wikipedia uses for spaces. Replacing special characters with underscores, etc., is common practice.
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