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How to add 10 days to current time in Rails
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Use
Time.now + 10.days
or even
10.days.from_now
Both definitely work. Are you sure you're in Rails and not just Ruby?
If you definitely are in Rails, where are you trying to run this from? Note that Active Support has to be loaded.
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Replace None with NaN in pandas dataframe
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140
You can use DataFrame.fillna or Series.fillna which will replace the Python object None, not t...
Generating an MD5 checksum of a file
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491
You can use hashlib.md5()
Note that sometimes you won't be able to fit the whole file in memory...
Difference between sampling and profiling in jVisualVM
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1 Answer
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How to create an instance of anonymous class of abstract class in Kotlin?
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1 Answer
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Counting the Number of keywords in a dictionary in python
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edited Feb 7 '10 at 5:11
answered Feb 6 '10 at 7:41
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Using current time in UTC as default value in PostgreSQL
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answered May 17 '13 at 13:30
Daniel VéritéDaniel Vérité
46.6k1313 gold badges102102 silver badges123123 bronze badges
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Why does the lock object have to be static?
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177
It isn't "very common to use a private static readonly object for locking in multi threading" ...
optional parameters in SQL Server stored proc?
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You can declare like this
CREATE PROCEDURE MyProcName
@Parameter1 INT = 1,
@Parameter2 VARCHAR (100) = 'StringValue',
@Parameter3 VARCHAR (100) = NULL
AS
/* check for the NULL / default value (indicating nothing was passed */
if (@Parameter3 IS NULL)
BEGIN
/* whatever code yo...
C++0x lambda capture by value always const?
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167
Use mutable.
auto bar = [=] () mutable -> bool ....
Without mutable you are declaring t...