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remove None value from a list without removing the 0 value
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>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> [x for x in L if x is not None]
[0, 23, 234, 89, 0, 35, 9]
Just for fun, here's how you can adapt filter to do this without using a lambda, (I wouldn't recommend this code - it's just for sci...
RegEx - Match Numbers of Variable Length
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{[0-9]+:[0-9]+}
try adding plus(es)
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Fastest way to check if string contains only digits
...str)
{
foreach (char c in str)
{
if (c < '0' || c > '9')
return false;
}
return true;
}
Will probably be the fastest way to do it.
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What is a unix command for deleting the first N characters of a line?
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answered Jun 9 '09 at 19:06
iammichaeliammichael
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Why are two different concepts both called “heap”?
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9 Answers
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Test if string is a number in Ruby on Rails
....346.11"
– Jakob S
Nov 3 '11 at 10:29
7
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JavaScript .replace only replaces first Match [duplicate]
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answered Jul 9 '10 at 17:02
Nick Craver♦Nick Craver
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