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What is the proper way to check for null values?
...h this at all. Extension methods on object are a curse and junk up a code base, and extension methods that operate without error on null this values are pure evil.
– Nick Larsen
Mar 20 '12 at 19:01
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How to convert DateTime to VarChar
...n 2005(!) should check out the answer by Zar Shardan suggesting a solution based on FORMAT(date_value, format_string) function.
– Nickolay
Jan 25 '17 at 15:28
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Convert JavaScript String to be all lower case?
... "toLowerCase does not affect the value of the string str itself". This is base on a documentation here developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Cary Bondoc
Jun 27 '14 at 0:52
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Preloading images with jQuery
...me sleep(5) in my server side script. I implemented the following solution based off yours which seems to solve this.
Basically I added a callback to your jQuery preload plugin, so that it gets called after all the images are properly loaded.
// Helper function, used below.
// Usage: ['img1.jpg','...
IPC performance: Named Pipe vs Socket
...nted a project in C with named pipes, thanks to standart file input-output based communication (fopen, fprintf, fscanf ...) it was so easy and clean (if that is also a consideration).
I even coded them with java (I was serializing and sending objects over them!)
Named pipes has one disadvantage:
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Fastest way to find second (third…) highest/lowest value in vector or column
...implementations discussed above
Also the methods discussed above that are based on partial sort, don't support finding the k smallest values
Rfast::nth(x, 5, descending = T)
Will return the 5th largest element of x, while
Rfast::nth(x, 5, descending = F)
Will return the 5th smallest element o...
The difference between sys.stdout.write and print?
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Here's some sample code based on the book Learning Python by Mark Lutz that addresses your question:
import sys
temp = sys.stdout # store original stdout object for later
sys.stdout = open('log.txt', 'w') # redirect all prints to th...
Reverse colormap in matplotlib
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As a LinearSegmentedColormaps is based on a dictionary of red, green and blue, it's necessary to reverse each item:
import matplotlib.pyplot as plt
import matplotlib as mpl
def reverse_colourmap(cmap, name = 'my_cmap_r'):
"""
In:
cmap, name
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SQLite with encryption/password protection
... Do you have any documentation of How-To-Use Botan for SQLite database encryption? The Botan web site does not mention this feature.
– Marc Schlösser
Feb 29 '12 at 16:17
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How to save a plot as image on the disk?
... Is there any way for R to infer the file extension automatically (i.e. based on the function)? It seems tedious to have to change the filename as well as the function used.
– Bonlenfum
Nov 4 '15 at 17:25
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