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Covariance, Invariance and Contravariance explained in plain English?
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Following git-flow how should you handle a hotfix of an earlier release?
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answered Oct 10 '15 at 9:20
Klas MellbournKlas Mellbourn
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How to create a hex dump of file containing only the hex characters without spaces in bash?
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Giacomo1968
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answered Apr 10 '10 at 20:27
mark4omark4o
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Does Python have a string 'contains' substring method?
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10 Answers
10
Active
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How to write the Fibonacci Sequence?
...n
if cur >= startNumber:
yield cur
for i in SubFib(10, 200):
print i
My hint is to learn to read what you need. Project Euler (google for it) will train you to do so :P
Good luck and have fun!
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Append to a file in Go
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answered May 5 '17 at 10:18
Javier Gutiérrez-Maturana SáncJavier Gutiérrez-Maturana Sánc
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in_array() and multidimensional array
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answered Nov 8 '10 at 21:45
jwuellerjwueller
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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...: 'abc'})
{ "_id" : "abc" }
> db.foo.insert({_id: 'abc', data:'xyz'})
E11000 duplicate key error index: test.foo.$_id_ dup key: { : "abc" }
So, absolutely don't rely on _id's being unique across collections, and since you don't control the ObjectId generation function, don't rely on it.
It's...
Why does ++[[]][+[]]+[+[]] return the string “10”?
This is valid and returns the string "10" in JavaScript ( more examples here ):
9 Answers
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What does collation mean?
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answered Dec 27 '10 at 12:48
paxdiablopaxdiablo
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