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Wrapping null-returning method in Java with Option in Scala?
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The Option companion object's apply method serves as a conversion function from nullable refer...
Rails: where does the infamous “current_user” come from?
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edited Aug 9 '14 at 19:46
answered Oct 4 '12 at 3:48
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Make .git directory web inaccessible
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edited Sep 11 '19 at 12:23
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Replace one substring for another string in shell script
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How to drop multiple columns in postgresql
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Check this:
ALTER TABLE table DROP COLUMN col1, DROP COLUMN col2;
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What does (angle brackets) mean in Java?
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161
<T> is a generic and can usually be read as "of type T". It depends on the type to the l...
Python serialization - Why pickle?
...tored, usually one would do:
with open('filename', 'wb') as f:
var = {1 : 'a' , 2 : 'b'}
pickle.dump(var, f)
That would store the pickled version of our var dict in the 'filename' file. Then, in another script, you could load from this file into a variable and the dictionary would be recr...
What is the most “pythonic” way to iterate over a list in chunks?
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SQLAlchemy default DateTime
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DateTime doesn't have a default key as an input. The default key should be an input to the Col...