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Check if a given key already exists in a dictionary and increment it
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12 Answers
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How to select a single field for all documents in a MongoDB collection?
In my MongoDB, I have a student collection with 10 records having fields name and roll . One record of this collection is:
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How to see which flags -march=native will activate?
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You can use the -Q --help=target options:
gcc -march=native -Q --help=target ...
The -v opt...
Explicitly select items from a list or tuple
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list( myBigList[i] for i in [87, 342, 217, 998, 500] )
I compared the answers with python ...
Aren't Python strings immutable? Then why does a + “ ” + b work?
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First a pointed to the string "Dog". Then you changed the variable a to point at a new string...
How do I query using fields inside the new PostgreSQL JSON datatype?
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Postgres 9.2
I quote Andrew Dunstan on the pgsql-hackers list:
At some stage there will p...
How to enable local network users to access my WAMP sites?
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CSS Image size, how to fill, not stretch?
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15 Answers
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How to define different dependencies for different product flavors
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To define a flavor specific dependency you can use proCompile instead of compile in your depen...