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Why is MySQL's default collation latin1_swedish_ci?
...e collation
– kommradHomer
Feb 26 '14 at 10:47
5
Talking about 'good defaults'. Which this, of co...
Python: using a recursive algorithm as a generator
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In Python 3.4, you can replace the last two lines with yield from getPermutations(string[:i] + string[i+1:]), which is more efficient in many ways!
– Manuel Ebert
Apr 29 '14 at 17:46
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Regex how to match an optional character
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4 Answers
4
Active
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How can I sort a dictionary by key?
What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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R data formats: RData, Rda, Rds etc
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answered Jan 26 '14 at 22:53
KenMKenM
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How to prevent browser page caching in Rails
...nse.headers["Expires"] = "Mon, 01 Jan 1990 00:00:00 GMT"
end
end
Rails 4 and older versions:
class ApplicationController < ActionController::Base
before_filter :set_cache_headers
private
def set_cache_headers
response.headers["Cache-Control"] = "no-cache, no-store"
response....
Array include any value from another array?
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NakilonNakilon
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3
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Appending to an existing string
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answered Mar 1 '10 at 15:44
sepp2ksepp2k
331k4747 gold badges636636 silver badges653653 bronze badges
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How do I calculate percentiles with python/numpy?
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294
You might be interested in the SciPy Stats package. It has the percentile function you're after ...
conditional unique constraint
...'Oh no!', 1);
INSERT INTO CheckConstraint VALUES (2, 'Oh no!', 2);
-- Msg 547, Level 16, State 0, Line 14
-- The INSERT statement conflicted with the CHECK constraint "CheckActiveCountConstraint". The conflict occurred in database "TestSchema", table "dbo.CheckConstraint".
INSERT INTO CheckConstrain...