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Extract first item of each sublist
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201
Using list comprehension:
>>> lst = [['a','b','c'], [1,2,3], ['x','y','z']]
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How to get first and last day of previous month (with timestamp) in SQL Server
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228
select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) --First day of previous month
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Determine installed PowerShell version
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edited Jan 2 at 7:33
community wiki
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How to retrieve GET parameters from javascript? [duplicate]
...ow.location.search.substr(1)
From your example it will return returnurl=%2Fadmin
EDIT: I took the liberty of changing Qwerty's answer, which is really good, and as he pointed I followed exactly what the OP asked:
function findGetParameter(parameterName) {
var result = null,
tmp = [];...
Remove duplicate dict in list in Python
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12 Answers
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Get Folder Size from Windows Command Line
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123
You can just add up sizes recursively (the following is a batch file):
@echo off
set size=0
for...
Get index of array element faster than O(n)
... Hash[array.map.with_index.to_a] # => {"a"=>0, "b"=>1, "c"=>2}
hash['b'] # => 1
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Print a list in reverse order with range()?
...rameters. range(start, stop, step)
For example, to generate a list [5,4,3,2,1,0], you can use the following:
range(5, -1, -1)
It may be less intuitive but as the comments mention, this is more efficient and the right usage of range for reversed list.
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How to iterate over a JavaScript object?
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edited Nov 3 '19 at 12:50
Beachhouse
4,46722 gold badges2222 silver badges3434 bronze badges
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What is difference between sjlj vs dwarf vs seh?
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2 Answers
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