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Creating Multifield Indexes in Mongoose / MongoDB
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194
You call the index method on your Schema object to do that as shown here. For your case it wo...
How to get a random number between a float range?
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Use random.uniform(a, b):
>>> random.uniform(1.5, 1.9)
1.8733202628557872
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Print commit message of a given commit in git
... "plumbing", but it'll do exactly what you want:
$ git log --format=%B -n 1 <commit>
If you absolutely need a "plumbing" command (not sure why that's a requirement), you can use rev-list:
$ git rev-list --format=%B --max-count=1 <commit>
Although rev-list will also print out the co...
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]})...
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 filter Pandas dataframe using 'in' and 'not in' like in SQL
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891
You can use pd.Series.isin.
For "IN" use: something.isin(somewhere)
Or for "NOT IN": ~something....
How to Git stash pop specific stash in 1.8.3?
I just upgraded Git. I'm on Git version 1.8.3.
9 Answers
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Return a value if no rows are found in Microsoft tSQL
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12 Answers
12
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How to reorder data.table columns (without copying)
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185
Use setcolorder():
library(data.table)
x <- data.table(a = 1:3, b = 3:1, c = runif(3))
x
#...