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updating table rows in postgres using subquery
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gsamaras
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answered Jun 6 '11 at 22:07
Andrew Laza...
Difference between numpy.array shape (R, 1) and (R,)
...rue
ALIGNED : True
UPDATEIFCOPY : False
>>> a.dtype
dtype('int64')
>>> a.itemsize
8
>>> a.strides
(8,)
>>> a.shape
(12,)
Here the shape (12,) means the array is indexed by a single index which runs from 0 to 11. Conceptually, if we label this single index ...
How to swap keys and values in a hash
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You bet there is one! There is always a shorter way to do things in Ruby!
It's pretty simple, ...
Convert blob URL to normal URL
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A URL that was created from a JavaScript Blob can not be converted to a "normal" URL.
A blob: ...
Is there a benefit to defining a class inside another class in Python?
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dF.dF.
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When should I write the keyword 'inline' for a function/method?
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I'd like to contribute to all of the great answers in this thread with a convincing example to ...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...这是块注释
这是块注释
变量Lua的数字只有double型，64bits，你不必担心Lua处理浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3.0
num = 3.1...
Javascript calculate the day of the year (1 - 366)
...for another 200,000 years. The largest date supported by Date is new Date(8640000000000000), which is still less than Number.MAX_SAFE_INTEGER. see this answer: stackoverflow.com/a/11526569/18511
– Kip
Aug 4 at 16:35
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PHP shell_exec() vs exec()
...0.255 Mask:255.255.255.0\n inet6 addr: fe80::12bf:ffff:eeee:2222/64 Scope:Link\n UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1\n RX packets:16264200 errors:0 dropped:1 overruns:0 frame:0\n TX packets:7205647 errors:0 dropped:0 overruns:0 carrier:0\n ...
Is it faster to count down than it is to count up?
... sigfpesigfpe
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