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What is the difference between procedural programming and functional programming? [closed]
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A functional language (ideally) allows you to write a mathematical function, i.e. a function that takes n arguments and returns a value. If the program is executed, this function is logically evaluated as needed.1
A procedural language, on the other ...
Is Hash Rocket deprecated?
... I can't find any definitive reference stating the Hash Rocket form is actually deprecated/unadvised as of Ruby 1.9.
1 Answ...
C# string reference type?
...iables pointing to the string. And because any operations with strings actually create a new object, we make our local copy to point to the new string. But the original test variable is not changed.
The suggested solutions to put ref in the function declaration and in the invocation work because we...
Benefits of inline functions in C++?
...ce and everything had to fit in 100KB of memory) what advantages do they really have today?
14 Answers
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How to override to_json in Rails?
...ould be separate from the rendering of the json.
Now, anytime to_json is called on an object, as_json is invoked to create the data structure, and then that hash is encoded as a JSON string using ActiveSupport::json.encode. This happens for all types: object, numeric, date, string, etc (see the Act...
Convert boolean to int in Java
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Yes, as in (foo && (!bar || baz)) ? 1 : 0. Obviously, if it's just an identifier, the parens aren't necessary or desirable.
– Blrfl
Sep 25 '10 at 12:58
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What is a callback URL in relation to an API?
...thod you're calling after it's done. So if you call
POST /api.example.com/foo?callbackURL=http://my.server.com/bar
Then when /foo is finished, it sends a request to http://my.server.com/bar. The contents and method of that request are going to vary - check the documentation for the API you're acc...
What's the purpose of git-mv?
From what I understand, Git doesn't really need to track file rename/move/copy operations, so what's the real purpose
of git mv ? The man page isn't specially descriptive...
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Rails: How to list database tables/objects using the Rails console?
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To get a list of all model classes, you can use ActiveRecord::Base.subclasses e.g.
ActiveRecord::Base.subclasses.map { |cl| cl.name }
ActiveRecord::Base.subclasses.find { |cl| cl.name == "Foo" }
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git clone from another directory
...d if no directory
is explicitly given (repo for /path/to/repo.git and foo for host.xz:foo/.git).
Cloning into an existing directory is only allowed if the directory is empty.
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