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Counting DISTINCT over multiple columns
... this approach and in a particular case the checksum ended up with a count 10% smaller. If you think of it a bit longer, Checksum just returns an int, so if you'd checksum a full bigint range you'll end up with a distinct count about 2 billion times smaller than there actually is. -1
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Populating a ListView using an ArrayList?
...krane ChentirAmokrane Chentir
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Finding local maxima/minima with Numpy in a 1D numpy array
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bobrobbob
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answered Jan 7 '11 at 11:41
Sven MarnachSven Marnach
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SQL query to select dates between two dates
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Filip
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answered Feb 26 '11 at 4:37
DeepakDeepak
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Drawing Isometric game worlds
... Jens A. Koch
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answered May 21 '09 at 13:57
coobirdcoobird
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Block Comments in Clojure
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Clojure supports a #_ reader macro which completely skips the next form. This is mentioned on ...
Align image in center and middle within div
...;
display: block;
}
<div id="over" style="position:absolute; width:100%; height:100%">
<img src="http://www.garcard.com/images/garcard_symbol.png">
</div>
JSFiddle
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How to round up to the nearest 10 (or 100 or X)?
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If you just want to round up to the nearest power of 10, then just define:
roundUp <- function(x) 10^ceiling(log10(x))
This actually also works when x is a vector:
> roundUp(c(0.0023, 3.99, 10, 1003))
[1] 1e-02 1e+01 1e+01 1e+04
..but if you want to round to a "nice...
Django Setup Default Logging
...andler',
'filename': 'logs/mylog.log',
'maxBytes': 1024*1024*5, # 5 MB
'backupCount': 5,
'formatter':'standard',
},
'request_handler': {
'level':'DEBUG',
'class':'logging.handlers.RotatingFileHandler',
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