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Append column to pandas dataframe
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135
It seems in general you're just looking for a join:
> dat1 = pd.DataFrame({'dat1': [9,5]})...
Change one value based on another value in pandas
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186
One option is to use Python's slicing and indexing features to logically evaluate the places w...
How to get a specific output iterating a hash in Ruby?
...uts "#{key}-----"
puts array
end
Regarding order I should add, that in 1.8 the items will be iterated in random order (well, actually in an order defined by Fixnum's hashing function), while in 1.9 it will be iterated in the order of the literal.
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How to avoid reinstalling packages when building Docker image for Python projects?
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143
Try to build a Dockerfile which looks something like this:
FROM my/base
WORKDIR /srv
ADD ./re...
SVN needs-lock 设置强制只读属性（官方资料） - 环境配置 - 清泛IT论坛，...
...fore versioning of binary files should follow the lock-modify-unlock model[1]. This setup uses the following three measuresforces users to use property svn:needs-lock on newly added binary files. Denies commits when the property is not available
sets the svn:needs-lock property on all already ex...
Most efficient method to groupby on an array of objects
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Calculate date from week number
...kHolterman even with the fix by @RobinAndersson.
Reading up on the ISO 8601 standard resolves the issue nicely. Use the first Thursday as the target and not Monday. The code below will work for Week 53 of 2009 as well.
public static DateTime FirstDateOfWeekISO8601(int year, int weekOfYear)
{
D...
Django 1.7 - makemigrations not detecting changes
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188
If you're changing over from an existing app you made in django 1.6, then you need to do one p...
Iterate a list as pair (current, next) in Python
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