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Difference between doseq and for in Clojure
...seq is for executing side-effects and returns nil.
user=> (for [x [1 2 3]] (+ x 5))
(6 7 8)
user=> (doseq [x [1 2 3]] (+ x 5))
nil
user=> (doseq [x [1 2 3]] (println x))
1
2
3
nil
If you want to build a new sequence based on other sequences, use for. If you want to do side-effects (print...
Why does Lua have no “continue” statement?
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edited Apr 1 '13 at 20:56
finnw
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How do I convert a dictionary to a JSON String in C#?
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How can I create Min stl priority_queue?
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answered Mar 13 '10 at 17:37
James McNellisJames McNellis
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How to replace text between quotes in vi
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183
Use ci", which means: change what inside the double quotes.
You can also manipulate other tex...
Maximum length for MD5 input/output
... a fixed-length output of 128 bits, typically represented as a sequence of 32 hexadecimal digits.
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Is there any way to use a numeric type as an object key?
...a string via the toString method.
> var foo = {}
undefined
> foo[23213] = 'swag'
'swag'
> foo
{ '23213': 'swag' }
> typeof(Object.keys(foo)[0])
'string'
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TypeError: not all arguments converted during string formatting python
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answered Aug 5 '13 at 8:19
nneonneonneonneo
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How can I check for NaN values?
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math.isnan(x)
Return True if x is a NaN (not a number), and False otherwise.
>>>...
How to subtract date/time in JavaScript? [duplicate]
...e() - new Date(dateStr.replace(/-/g,'/')));
i.e. turning "2011-02-07 15:13:06" into new Date('2011/02/07 15:13:06'), which is a format the Date constructor can comprehend.
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