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How do you use a variable in a regular expression?
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benchmark here: jsperf.com/replace-vs-split-join-vs-replaceall/23
– Wagner Danda da Silva Filho
Feb 21 '18 at 16:42
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What is the difference between $(command) and `command` in shell programming?
... it's easier to nest $() than ``:
listing=$(ls -l $(cat filenames.txt))
vs.
listing=`ls -l \`cat filenames.txt\``
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Python __str__ versus __unicode__
... A()
print( "__repr__ checks")
print( a1 )
print( a2 )
print( "\n__str__ vs __unicode__ checks")
print( str( a1 ))
print( unicode(a1))
print( "{}".format( a1 ))
print( u"{}".format( a1 ))
yields the following console output...
__repr__ checks
<__main__.A instance at 0x103f063f8>
<__mai...
multiple prints on the same line in Python
...in python 3.x you'll want to add a "\r" to end to replace the printed line VS appending to the end of it print("Progress: {}%".format(var), end="\r", flush=True)
– John
Jan 6 '18 at 22:42
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Convert an ISO date to the date format yyyy-mm-dd in JavaScript
...answer answer as far as I can tell and I like that solution for the effort vs reliability vs effectively factor though I use moment() everywhere I can though.
– rainabba
May 25 '18 at 22:00
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jQuery disable/enable submit button
...is not the right approach. There is a lot of confusion regarding attribute vs. property.
HTML
The "disabled" in <input type="button" disabled> in the markup is called a boolean attribute by the W3C.
HTML vs. DOM
Quote:
A property is in the DOM; an attribute is in the HTML that is parse...
Syntax for creating a two-dimensional array
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@Oldrinb what about int array[][] = new int[3][]; VS int array[][] = new int[][3]; ?? which one is legal as I have read both version somewhere.
– roottraveller
Jun 13 '17 at 9:40
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Show percent % instead of counts in charts of categorical variables
....0.0
This question is currently the #1 hit on google for 'ggplot count vs percentage histogram' so hopefully this helps distill all the information currently housed in comments on the accepted answer.
Remark: If hp is not set as a factor, ggplot returns:
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How to debug a Flask app
...ning the server, regardless of development mode.
If you're using PyCharm, VS Code, etc., you can take advantage of its debugger to step through the code with breakpoints. The run configuration can point to a script calling app.run(debug=True, use_reloader=False), or point it at the venv/bin/flask s...
How to read an entire file to a string using C#?
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A benchmark comparison of File.ReadAllLines vs StreamReader ReadLine from C# file handling
Results. StreamReader is much faster for large files with 10,000+
lines, but the difference for smaller files is negligible. As always,
plan for varying sizes of files,...