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Lambda function in list comprehensions
... calls it ten times.
The second one doesn't call the function. It creates 10 different lambda functions. It puts all of those in a list. To make it equivalent to the first you need:
[(lambda x: x*x)(x) for x in range(10)]
Or better yet:
[x*x for x in range(10)]
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Is there any git hook for pull?
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edited Jul 26 '17 at 20:32
answered Nov 15 '10 at 14:46
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What does 'stale file handle' in Linux mean?
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answered Nov 20 '13 at 19:56
dg99dg99
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Can I prevent the Firefox developer tools network panel from clearing on page reload?
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107
From Firefox 31 onwards you can use the "Enable persistent logs" setting to prevent the Network...
How to preserve line breaks when storing a command output to a variable in bash?
...ypal singh
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How can I get the intersection, union, and subset of arrays in Ruby?
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edited Oct 13 '15 at 0:55
dinjas
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answered Apr 15 '11 at 1...
Ruby send vs __send__
..._, not send.
– Andrew Marshall
Aug 10 '14 at 23:50
Good answer. Might be even better if it mentioned public_send, whic...
jQuery exclude elements with certain class in selector
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edited May 23 '17 at 12:03
Community♦
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answered Jun 10 '10 at 14:12
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MongoDB, remove object from array
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try..
db.mycollection.update(
{'_id': ObjectId("5150a1199fac0e6910000002")},
{ $pull: { "items" : { id: 23 } } },
false,
true
);
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Python mock multiple return values
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edited Aug 4 at 17:00
Nick Humrich
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answered...