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How to create directories recursively in ruby?
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answered Sep 10 '10 at 15:49
Harmon WoodHarmon Wood
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Why prefer two's complement over sign-and-magnitude for signed numbers?
..., 2 and -1. In your "intuitive" way of representing numbers, they would be 0010 and 1001, respectively (I'm sticking to 4 bits for size). In the two's complement way, they are 0010 and 1111. Now, let's say I want to add them.
Two's complement addition is very simple. You add numbers normally and an...
How to upper case every first letter of word in a string? [duplicate]
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answered Jul 19 '09 at 13:11
akarnokdakarnokd
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Guaranteed lifetime of temporary in C++?
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110
The destructor for that sort of temporaries is called at the end of the full-expression. That's ...
Can I call memcpy() and memmove() with “number of bytes” set to zero?
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edited Sep 22 '12 at 10:42
answered Sep 20 '10 at 13:32
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?
...long_table_name AS t')->select('t.id AS uid')->get();
// array(
// 0 => object(stdClass)(
// 'uid' => '1'
// )
// )
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postgresql - sql - count of `true` values
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CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
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answered Jan 23 '12 at 0:18
nicolaskruchtennicolaskruchten
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Are loops really faster in reverse?
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907
It's not that i-- is faster than i++. Actually, they're both equally fast.
What takes time in ...
Check if a table exists in Rails
...ke task that won't work unless a table exists. I'm working with more than 20 engineers on a website so I want to make sure they have migrated the table before they can do a rake task which will populate that respective table.
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