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Force drop mysql bypassing foreign key constraint
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answered Feb 19 '10 at 23:53
Otávio DécioOtávio Décio
68.9k1414 gold badges152152 silver badges219219 bronze badges
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Why is the shovel operator (
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Proof:
a = 'foo'
a.object_id #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b is syntactic short...
“x not in y” or “not x in y”
... 'ham' not in 'spam and eggs'
>>> dis.dis(notin)
2 0 LOAD_CONST 1 ('ham')
3 LOAD_CONST 2 ('spam and eggs')
6 COMPARE_OP 7 (not in)
9 POP_TOP
10 LOAD_CONST ...
How to determine function name from inside a function
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You can use ${FUNCNAME[0]} in bash to get the function name.
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scipy.misc module has no attribute imread?
...n.PngImageFile...
– Allan Ruin
Nov 10 '14 at 9:24
21
It should be Pillow instead of PIL now. Refe...
ItemsControl with horizontal orientation
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470
Simply change the panel used to host the items:
<ItemsControl ...>
<ItemsControl.I...
A top-like utility for monitoring CUDA activity on a GPU
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– Lee Netherton
Oct 25 '19 at 18:10
1
watch -n 0.5 -c gpustat -cp --color
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List comprehension vs map
... map when using exactly the same function:
$ python -mtimeit -s'xs=range(10)' 'map(hex, xs)'
100000 loops, best of 3: 4.86 usec per loop
$ python -mtimeit -s'xs=range(10)' '[hex(x) for x in xs]'
100000 loops, best of 3: 5.58 usec per loop
An example of how performance comparison gets completely r...
Java regular expression OR operator
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edited Jan 9 '10 at 0:57
answered Jan 9 '10 at 0:46
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Array.Copy vs Buffer.BlockCopy
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edited Feb 15 '17 at 12:09
Ajay
16.3k99 gold badges4646 silver badges9090 bronze badges
answered Sep 7...