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NSDictionary - Need to check whether dictionary contains key-value pair or not
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edited Dec 20 '17 at 6:18
Tony Adams
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How do I put the image on the right side of the text in a UIButton?
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BenjaminBenjamin
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Android: alternate layout xml for landscape mode
...amp-landscape-differeent-layouts and http://www.devx.com/wireless/Article/40792/1954 for some more options.
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Why is MySQL's default collation latin1_swedish_ci?
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109
The bloke who wrote it was co-head of a Swedish company.
Possibly for similar reasons, Microso...
How do I convert an interval into a number of hours with postgres?
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Probably the easiest way is:
SELECT EXTRACT(epoch FROM my_interval)/3600
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How to get indices of a sorted array in Python
...able:
>>> import numpy
>>> numpy.argsort(myList)
array([0, 1, 2, 4, 3])
http://docs.scipy.org/doc/numpy/reference/generated/numpy.argsort.html
This returns the arguments that would sort the array or list.
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ROW_NUMBER() in MySQL
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107
I want the row with the single highest col3 for each (col1, col2) pair.
That's a groupwise...
JavaScript “new Array(n)” and “Array.prototype.map” weirdness
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130
It appears that the first example
x = new Array(3);
Creates an array with undefined pointers....
Does .NET have a way to check if List a contains all items in List b?
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answered Oct 5 '09 at 15:06
Jon SkeetJon Skeet
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Select rows which are not present in other table
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+500
There are basically 4 techniques for this task, all of them standard SQL.
NOT EXISTS
Often fastest in Postgres.
SELECT ip
FROM ...