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常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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#删除文件的几种方法（貌似Git2.0后有了变化）
#第一种直接在工作区删除
rm your_file #直接在工作区删除文件
git add -u . #将有改动的都提交到暂存区（包括修改的，删除的等操作），貌似git2.0 不加 -u 参...
Different types of thread-safe Sets in Java
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206
1) The CopyOnWriteArraySet is a quite simple implementation - it basically has a list of elemen...
Paste multiple times
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109
I have this in my .vimrc:
xnoremap p pgvy
(note: this will work only with the default regist...
What is the difference between declarative and imperative programming? [closed]
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809
A great C# example of declarative vs. imperative programming is LINQ.
With imperative programm...
Android canvas draw rectangle
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edited Dec 22 '11 at 15:00
Yuck
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answered D...
List comprehension: Returning two (or more) items for each item
...>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_iterable((f(x), g(x)) for x in range(3)))',
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Scroll to the top of the page using JavaScript?
... - I'd just use the native JavaScript window.scrollTo method -- passing in 0,0 will scroll the page to the top left instantly.
window.scrollTo(x-coord, y-coord);
Parameters
x-coord is the pixel along the horizontal axis.
y-coord is the pixel along the vertical axis.
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How do I get ruby to print a full backtrace instead of a truncated one?
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10 Answers
10
Active
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Python: List vs Dict for look up table
I have about 10million values that I need to put in some type of look up table, so I was wondering which would be more efficient a list or dict ?
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Illegal string offset Warning PHP
I get a strange PHP error after updating my php version to 5.4.0-3.
16 Answers
16
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