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Remove all values within one list from another list? [duplicate]
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>>> a = range(1, 10)
>>> [x for x in a if x not in [2, 3, 7]]
[1, 4, 5, 6, 8, 9]
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background-size in shorthand background property (CSS3)
...ground-size properties in a shorthanded background property. Based on W3C documentation background-size should come after background-position property separated with an slash( / ).
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#ifdef #ifndef in Java
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edited Nov 8 '13 at 7:51
chiccodoro
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Using do block vs braces {}
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do..end syntax. Consider the following
two snippets of code:
1.upto 3 do |x|
puts x
end
1.upto 3 { |x| puts x }
# SyntaxError: compile error
Second example only works when parentheses is used, 1.upto(3) { |x| puts x }
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How do I flag a method as deprecated in Objective-C 2.0?
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163
Deprecation Syntax
Syntax is provided to mark methods as deprecated:
@interface SomeClass
-met...
App Inventor 2 上传文件和图片到服务器教程 · App Inventor 2 中文网
... 1. 拍照后上传
2. 从相册选择图片后上传
3. 处理上传结果
方案二：Base64 编码上传
原理
组件准备
积木块代码
1. 读取文件并 Base64 编码上传
2. 处理上传结...
What is std::string::c_str() lifetime?
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answered Jun 23 '11 at 15:15
Kristopher JohnsonKristopher Johnson
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How to get item's position in a list?
...in enumerate(testlist) if x == 1]
Example:
>>> testlist
[1, 2, 3, 5, 3, 1, 2, 1, 6]
>>> [i for i,x in enumerate(testlist) if x == 1]
[0, 5, 7]
Update:
Okay, you want a generator expression, we'll have a generator expression. Here's the list comprehension again, in a for loop...
git replace local version with remote version
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173
This is the safest solution:
git stash
Now you can do whatever you want without fear of confl...
git cherry-pick says “…38c74d is a merge but no -m option was given”
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answered Feb 10 '12 at 14:34
BorealidBorealid
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