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Rails: Using build with a has_one association in rails
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m33lky
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answered Mar 18 '10 at 21:00
Harish ShettyHarish...
Variable is accessed within inner class. Needs to be declared final
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answered Apr 24 '15 at 17:15
Kevin ZhaoKevin Zhao
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mongoDB/mongoose: unique if not null
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173
As of MongoDB v1.8+ you can get the desired behavior of ensuring unique values but allowing mul...
What is a Manifest in Scala and when do you need it?
Since Scala 2.7.2 there is something called Manifest which is a workaround for Java's type erasure. But how does Manifest work exactly and why / when do you need to use it?
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Build the full path filename in Python
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7
You mentioned that the OS separator may not be .. For this one can use os.extsep.
– sjbx
Mar 18 '13 a...
What is the difference between '>' and a space in CSS selectors?
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Matti VirkkunenMatti Virkkunen
56.8k77 gold badges107107 silver badges149149 bronze badges
add a ...
Create list of single item repeated N times
...timeit('itertools.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>>> timeit.timeit('[0] * 10', 'import itertools', number = 1000000)
0.5577236771712819
But wait - it's not a fair test...
>>> itertools.repeat(0, 10)
repeat(0, 10) # Not a list!!!
The ...
Why is rbindlist “better” than rbind?
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edited May 23 '17 at 11:55
Community♦
111 silver badge
answered Mar 28 '13 at 3:16
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What does it mean for a data structure to be “intrusive”?
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107
An intrusive data structure is one that requires help from the elements it intends to store in o...
Can an enum class be converted to the underlying type?
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Trilarion
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answered Jan 29 '13 at 18:16
NawazNawaz
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