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What is the best django model field to use to represent a US dollar amount?
I need to store a U.S. $ dollar amount in a field of a Django model. What is the best model field type to use? I need to be able to have the user enter this value (with error checking, only want a number accurate to cents), format it for output to users in different places, and use it to calculate...
Ruby: How to get the first character of a string
How can I get the first character in a string using Ruby?
13 Answers
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MediaNotification 媒体通知扩展：管理媒体播放器通知，支持播放控制 · Ap...
...异。最好使用单色图像（颜色深度1位）和大小256 x256像素²的JPEG或PNG格式。GIF格式的图形也可以，只要不是动画的。
ProgressBar（自Android 10，API Level 29）
自Android 10以来，媒体通知可以显示进度条和搜索条。为...
How to reset db in Django? I get a command 'reset' not found error
... edited May 14 at 12:17
Håken Lid
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answered Aug 30 '13 at 22:06
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What's the pythonic way to use getters and setters?
...east a little bit of useful information."
– Jean-François Corbett
Mar 16 '17 at 15:11
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How is t...
What is the fastest way to get the value of π?
...rithm. Wikipedia mentions that when a and b are "close enough" then (a + b)² / 4t will be an approximation of π. I'm not sure what "close enough" means, but from my tests, one iteration got 2 digits, two got 7, and three had 15, of course this is with doubles, so it might have an error based on it...
Counting the number of True Booleans in a Python List
...n ± std. dev. of 7 runs, 1000000 loops each)
In [4]: %timeit sum(x)
1.72 µs ± 161 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
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Can you pass parameters to an AngularJS controller on creation?
...nswered Feb 13 '14 at 10:23
François RomainFrançois Romain
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How to remove the first character of string in PHP?
How to use PHP , Remove the first character :
13 Answers
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Detect if a NumPy array contains at least one non-numeric value?
...)
Out[5]: True
In [6]: timeit isnan(a.max())
10000 loops, best of 3: 66.3 µs per loop
The treatment of nans in comparisons was not consistent in earlier versions.
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