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how does Array.prototype.slice.call() work?
I know it is used to make arguments a real array, but I don't understand what happens when using Array.prototype.slice.call(arguments)
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Do I set properties to nil in dealloc when using ARC?
I am trying to learn Automatic Reference Counting in iOS 5. Now the first part of this question should be easy:
2 Answers
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How do I create a class instance from a string name in ruby?
...on a namespaces like Foo::Bar. The example above is when the namespace is known ahead of time and highlights the fact that const_get can be called on modules directly as opposed to exclusively on Object.
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how to permit an array with strong parameters
..._answer_id, :province_id, :city, :category_ids => [])
Works perfectly now!
(IMPORTANT: As @Lenart notes in the comments, the array declarations must be at the end of the attributes list, otherwise you'll get a syntax error.)
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String formatting: % vs. .format vs. string literal
...format example is much cleaner looking.
Why would you not use it?
not knowing about it (me before reading this)
having to be compatible with Python 2.5
To answer your second question, string formatting happens at the same time as any other operation - when the string formatting expression is...
Static link of shared library function in gcc
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Yeah, I know this is an 8 year-old question, but I was told that it was possible to statically link against a shared-object library and this was literally the top hit when I searched for more information about it.
To actually demonst...
Enable remote MySQL connection: ERROR 1045 (28000): Access denied for user
...mysql/mysql.conf.d/mysqld.cnf
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address = 127.0.0.1
(comment this line: bind-address = 127.0.0.1)
Then run service mysql restart.
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Custom checkbox image android
...:background instead of android:button and ended up with 2 buttons instead. Now it all works well.
– Artem Russakovskii
Nov 23 '10 at 23:07
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PowerShell: Setting an environment variable for a single command only
...lue of the environment variable app_master. By defining cmd_special, I can now execute cmd_special from the command line (including other parameters) with the app_master environment variable set... and it gets reset (or even unset) after execution of the command.
Presumably, you could also do this ...
Why are properties without a setter not serialized
...rations need to be for both otherwise, the serialization process will not know what to do with a value when it is trying to serialize an XML into objects.
– ryadavilli
Nov 15 '12 at 15:55
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