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Is it bad practice to use Reflection in Unit testing? [duplicate]
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64
It is really bad to modify the visibility of a production API just for the sake of testing. Tha...
SET NOCOUNT ON usage
...ess if NO_COUNT is set to ON or OFF. RowCount is still there as ULONGLONG (64 bytes) and flag DONE_COUNT is still there but bit value is 0. SQL server will count number of rows anyways, even tho you are not interested to read value from DONE token. If you read @@ROWCOUNT then you added more bytes to...
Pandas get topmost n records within each group
... 2 3
1 2
2 6 4
5 3
3 7 1
4 8 1
dtype: int64
There's a slight weirdness that you get the original index in there as well, but this might be really useful depending on what your original index was.
If you're not interested in it, you can do .reset_index(level=1, dr...
How do I disable right click on my web page?
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We are deploying onto kiosk machines and chose this way to disable users from refreshing the page.
– Todd Horst
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Change R default library path using .libPaths in Rprofile.site fails to work
...:/usr/lib/R/library
R_LIBS_USER /home/david/R/x86_64-pc-linux-gnu-library/3.5.1/
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Does Python have a package/module management system?
.... Npm makes publishing packages as easy as installing them, it already has 64k packages. RubyGems lists 72k packages. The venerable Python package index lists only 41k.
History
Flying in the face of its "batteries included" motto, Python shipped without a package manager until 2014.
Until Pip, t...
Scaling Node.js
...= require('validator').sanitize
//Validate
check('test@email.com').len(6, 64).isEmail(); //Methods are chainable
check('abc').isInt(); //Throws 'Invalid integer'
check('abc', 'Please enter a number').isInt(); //Throws 'Please enter a number'
check('abcdefghi...
Why compile Python code?
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Georg SchöllyGeorg Schölly
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Can two different strings generate the same MD5 hash code?
...you should worry about. Considering the birthday paradox, given a set of 2^64 (or 18,446,744,073,709,551,616) assets, the probability of a single MD5 collision within this set is 50%. At this scale, you'd probably beat Google in terms of storage capacity.
However, because the MD5 hash function has ...
ggplot2 keep unused levels barplot
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You need to set drop=FALSE on both scales (fill and x) like this:
library(ggplot2)
df <- da...