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Convert a row of a data frame to vector
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Ben BolkerBen Bolker
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IN vs OR in the SQL WHERE Clause
...NT(*) FROM t_inner WHERE val IN (1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000);
1 row fetched in 0.0032 (1.2679 seconds)
SELECT COUNT(*) FROM t_inner WHERE val = 1000 OR val = 2000 OR val = 3000 OR val = 4000 OR val = 5000 OR val = 6000 OR val = 7000 OR val = 8000 OR val = 9000;
1 row fetch...
multiple prints on the same line in Python
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287
You can use the print statement to do this without importing sys.
def install_xxx():
print ...
How to rename items in values() in Django?
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From django>=1.8 you can use annotate and F object
from django.db.models import F
MyModel.objects.annotate(renamed_value=F('cryptic_value_name')).values('renamed_value')
Also extra() is going to be deprecated, from the django docs:
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How do I reverse a C++ vector?
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258
There's a function std::reverse in the algorithm header for this purpose.
#include <vector&g...
Can't start Eclipse - Java was started but returned exit code=13
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Rails migration: t.references with alternative name?
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168
You can do this all in the initial migration/column definition (at least currently in Rails 5):
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Convert from ASCII string encoded in Hex to plain ASCII?
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Multiple aggregations of the same column using pandas GroupBy.agg()
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edited Dec 8 '19 at 9:16
cs95
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What is the type of lambda when deduced with “auto” in C++11?
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answered Oct 31 '11 at 8:43
jalfjalf
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