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Haskell error parse error on input `='
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160
In GHCi 7.x or below, you need a let to define things in it.
Prelude> let f x = x * 2
Prel...
How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
My version of node is always v0.6.1-pre even after I install brew node and NVM install v0.6.19.
28 Answers
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How to get CSS to select ID that begins with a string (not in Javascript)?
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edited Jun 30 '15 at 11:53
answered Jul 15 '12 at 23:58
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
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answered Apr 9 '10 at 22:06
Ben ZottoBen Zotto
65.7k2222 gold badges133133 silver badges199199 bronze badges
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rails 3 validation on uniqueness on multiple attributes
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edited Aug 15 '14 at 14:15
Jason Swett
36.7k5757 gold badges183183 silver badges314314 bronze badges
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Are negative array indexes allowed in C?
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170
That is correct. From C99 §6.5.2.1/2:
The definition of the subscript
operator [] is ...
Python dict how to create key or append an element to key?
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edited Sep 30 '14 at 22:31
answered Oct 16 '12 at 0:43
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Convert number to month name in PHP
...ike so:
$monthNum = 3;
$monthName = date('F', mktime(0, 0, 0, $monthNum, 10)); // March
If you want the 3-letter month name like Mar, change F to M. The list of all available formatting options can be found in the PHP manual documentation.
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Bidirectional 1 to 1 Dictionary in C#
I am looking for a generic, bidirectional 1 to 1 Dictionary class in C# (2), ie. a BiDictionaryOneToOne<T, S> which is guaranteed to only contain one of each value and key (up to RefEquals anyway), and which can be searched using either key or value. Anyone know of one, or should I just impl...
Can table columns with a Foreign Key be NULL?
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Yes, you can enforce the constraint only when the value is not NULL. This can be easily tested w...