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Interpolating a string into a regex
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answered Sep 29 '08 at 18:53
Jonathan LonowskiJonathan Lonowski
108k3131 gold badges188188 silver badges191191 bronze badges
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How to deep copy a list?
...bitrary Python objects.
See the following snippet -
>>> a = [[1, 2, 3], [4, 5, 6]]
>>> b = list(a)
>>> a
[[1, 2, 3], [4, 5, 6]]
>>> b
[[1, 2, 3], [4, 5, 6]]
>>> a[0][1] = 10
>>> a
[[1, 10, 3], [4, 5, 6]]
>>> b # b changes too ->...
Regex replace uppercase with lowercase letters
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415
You may:
Find: (\w)
Replace With: \L$1
Or select the text, ctrl+K+L.
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Reload django object from database
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As of Django 1.8 refreshing objects is built in. Link to docs.
def test_update_result(self):
obj = MyModel.objects.create(val=1)
MyModel.objects.filter(pk=obj.pk).update(val=F('val') + 1)
# At this point obj.val is still 1, b...
How to subtract 2 hours from user's local time?
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edited Aug 16 '16 at 12:12
David Salamon
1,8752323 silver badges2727 bronze badges
answer...
How to change line width in ggplot?
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131
Whilst @Didzis has the correct answer, I will expand on a few points
Aesthetics can be set or...
Breaking a list into multiple columns in Latex
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edited Feb 10 '13 at 21:31
worldsayshi
1,44999 silver badges2727 bronze badges
answered S...
SQL update trigger only when column is modified
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128
You have two way for your question :
1- Use Update Command in your Trigger.
ALTER TRIGGER [d...
What regular expression will match valid international phone numbers?
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\+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d|
2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]|
4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$
Is the correct format for matching a generic international phone number. I replaced the US land line centric international access c...
Finding row index containing maximum value using R
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170
See ?which.max
> which.max( matrix[,2] )
[1] 2
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