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How do I get a string format of the current date time, in python?
...
#python3
import datetime
print(
'1: test-{date:%Y-%m-%d_%H:%M:%S}.txt'.format( date=datetime.datetime.now() )
)
d = datetime.datetime.now()
print( "2a: {:%B %d, %Y}".format(d))
# see the f" to tell python this is a f string, no .format
print(f"2b: {d:%B %d, %Y}")
print(f"3...
How to uninstall a Windows Service when there is no executable for it left on the system?
How do I uninstall a Windows Service when there is no executable for it left on the system? I can not run installutil -u since there is not executable left on the system. I can still see an entry for the service in the Services console.
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How to randomize (or permute) a dataframe rowwise and columnwise?
...] 1 0 0 1 0
[4,] 0 0 1 0 1
To explain the call:
out <- permatswap(mat, times = 99, burnin = 20000, thin = 500, mtype = "prab")
times is the number of randomised matrices you want, here 99
burnin is the number of swaps made before we start taking random samples....
Creating stored procedure and SQLite?
...ed functions in the host language (PHP, Python, Perl, C#, Javascript, Ruby etc). You can then use these custom functions as part of any SQLite select/update/insert/delete. I've done this in C# using DevArt's SQLite to implement password hashing.
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How do I tell Gradle to use specific JDK version?
...is is somewhat tedious work if you have 20+ build jobs... I think Gradle really needs to pick the Java Home directory from the system's configuration!
– Markus L
Jul 20 '16 at 12:39
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How to avoid warning when introducing NAs by coercion
... na = x %in% na.strings
x[na] = 0
x = as.numeric(x)
x[na] = NA_real_
x
}
as.num(c("1", "2", "X"), na.strings="X")
#[1] 1 2 NA
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The smallest difference between 2 Angles
...les in the range -PI -> PI around a coordinate, what is the value of the smallest of the 2 angles between them?
9 Answers
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What is the difference between IEqualityComparer and IEquatable?
...(considering GetHashCode is overridden as well), Contains on List<T> etc make use of this. Implementing IEqualityComparer<T> on T doesn't help the above mentioned general cases. Subsequently, there is little value for implementing IEquatable<T> on any other class other than T. This...
What does the question mark and the colon (?: ternary operator) mean in objective-c?
...operators we usually use when programming (*,+,-,^, |,||, &, >>, etc).
– tomacco
Feb 5 '18 at 18:07
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Getting URL hash location, and using it in jQuery
... do stuff with hash
$( 'ul' + hash + ':first' ).show();
// etc...
}
});
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