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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
Is it guaranteed that False == 0 and True == 1 , in Python (assuming that they are not reassigned by the user)? For instance, is it in any way guaranteed that the following code will always produce the same results, whatever the version of Python (both existing and, likely, future ones)?
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Get characters after last / in url
...o get the characters after the last / in an url like http://www.vimeo.com/1234567
8 Answers
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How do I calculate square root in Python?
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10 Answers
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Is unsigned integer subtraction defined behavior?
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107
The result of a subtraction generating a negative number in an unsigned type is well-defined:
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how to solve “ruby installation is missing psych” error?
I used rvm to install ruby 1.9.3. even though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:
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Convert a 1D array to a 2D array in numpy
I want to convert a 1-dimensional array into a 2-dimensional array by specifying the number of columns in the 2D array. Something that would work like this:
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How to add new item to hash
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Create the hash:
hash = {:item1 => 1}
Add a new item to it:
hash[:item2] = 2
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屏幕控制使用指导 · App Inventor 2 中文网
...，暂停或结束时恢复：
when 按钮_开始.Click() {
屏幕控制1.KeepScreenOn = true
计时器1.TimerEnabled = true
}
when 按钮_暂停.Click() {
屏幕控制1.KeepScreenOn = false
计时器1.TimerEnabled = false
}
要点：
常亮只在 App 位于前台时有效，切到...
How to avoid scientific notation for large numbers in JavaScript?
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There's Number.toFixed, but it uses scientific notation if the number is >= 1e21 and has a ...
How to remove duplicate white spaces in string using Java?
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edited Oct 29 '16 at 4:20
answered Oct 18 '10 at 12:13
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