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Haskell error parse error on input `='
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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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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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Error: “The node to be inserted is from a different document context”
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What is the advantage of using REST instead of non-REST HTTP?
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What does the brk() system call do?
...ere very lucky it would crash immediately.
I'm not sure where the number 512GB in this diagram comes from. It implies a 64-bit virtual address space, which is inconsistent with the very simple memory map you have there. A real 64-bit address space looks more like this:
Legend: t...
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
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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
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Are negative array indexes allowed in C?
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That is correct. From C99 §6.5.2.1/2:
The definition of the subscript
operator [] is ...
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...