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What ReSharper 4+ live templates for C# do you use? [closed]
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Javascript and regex: split string and keep the separator
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answered Aug 17 '12 at 8:01
JonJon
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AWS ssh access 'Permission denied (publickey)' issue [closed]
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App Inventor 2 软件著作权（软著）申请指南 · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
List comprehension rebinds names even after scope of comprehension. Is this right?
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172
List comprehensions leak the loop control variable in Python 2 but not in Python 3. Here's Guid...
Virtualbox “port forward” from Guest to Host [closed]
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How to avoid explicit 'self' in Python?
...ember or not:
class A(some_function()):
def f(self):
self.member = 42
self.method()
That's the complete code! (some_function returns the type used as a base.)
Another, where the methods of a class are dynamically composed:
class B(object):
pass
print B()
# <__main__.B object at...
Call apply-like function on each row of dataframe with multiple arguments from each row
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Converting integer to binary in python
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TrebledJ
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answered May 2 '12 at 9:32
eumiroeumiro
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Numbering rows within groups in a data frame
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284
Use ave, ddply, dplyr or data.table:
df$num <- ave(df$val, df$cat, FUN = seq_along)
or:
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