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R data formats: RData, Rda, Rds etc
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answered Jan 26 '14 at 22:53
KenMKenM
2,39811 gold badge1010 silver badges1313 bronze badges
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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
31.1k1212 gold badges9494 silver badges125125 bronze badges
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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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...
Python : List of dict, if exists increment a dict value, if not append a new dict
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edited Oct 28 '13 at 19:46
answered Nov 7 '09 at 8:28
ste...
How to sort mongodb with pymongo
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edited Sep 20 '17 at 4:12
answered Nov 13 '11 at 2:22
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assertEquals vs. assertEqual in python
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itsjeyd
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answered May 31 '09 at 1:17
Jarret HardieJarr...
Convert list to tuple in Python
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843
It should work fine. Don't use tuple, list or other special names as a variable name. It's prob...
Iterating Through a Dictionary in Swift
..., 3, 5, 7, 11, 13],
"Fibonacci": [1, 1, 2, 3, 5, 8],
"Square": [1, 4, 9, 16, 25]
]
var largest = 0
for (kind, numbers) in interestingNumbers {
println("kind: \(kind)")
for number in numbers {
if number > largest {
largest = number
}
}
}
largest
Th...