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Which equals operator (== vs ===) should be used in JavaScript comparisons?
...s Crockford's excellent JavaScript: The Good Parts,
JavaScript has two sets of equality operators: === and !==, and their evil twins == and !=. The good ones work the way you would expect. If the two operands are of the same type and have the same value, then === produces true and !== produces...
How to get a Docker container's IP address from the host
...scue.
Modern Docker client syntax is:
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id
Old Docker client syntax is:
docker inspect --format '{{ .NetworkSettings.IPAddress }}' container_name_or_id
These commands will return the Docker container'...
What is 'Pattern Matching' in functional languages?
I'm reading about functional programming and I've noticed that Pattern Matching is mentioned in many articles as one of the core features of functional languages.
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
How to wait in a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ?
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Why are Python lambdas useful? [closed]
...mple:
mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])
sets mult3 to [3, 6, 9], those elements of the original list that are multiples of 3. This is shorter (and, one could argue, clearer) than
def filterfunc(x):
return x % 3 == 0
mult3 = filter(filterfunc, [1, 2, 3, 4, 5, 6...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
...FTWARE\Microsoft\DevDiv\vc\Servicing\11.0\RuntimeMinimum\Install should be set to 1
– Alex Spence
Jun 27 '13 at 20:43
3
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Current time formatting with Javascript
...0-59).
getMilliseconds() - Returns the milliseconds (0-999).
getTimezoneOffset() - Returns the number of minutes between the machine local time and UTC.
There are no built-in methods allowing you to get localized strings like "Friday", "February", or "PM". You have to code that yourself. To get t...
Count occurrences of a char in a string using Bash
I need to count the number of occurrences of a char in a string using Bash.
7 Answers
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Text Progress Bar in the Console [closed]
...█-----| 90.0% Complete
Python 2
To use the above functions in Python 2, set the encoding to UTF-8 at the top of your script:
# -*- coding: utf-8 -*-
And replace the Python 3 string formatting in this line:
print(f'\r{prefix} |{bar}| {percent}% {suffix}', end = printEnd)
With Python 2 string for...
Which is more preferable to use: lambda functions or nested functions ('def')?
I mostly use lambda functions but sometimes use nested functions that seem to provide the same behavior.
16 Answers
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