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Ruby Metaprogramming: dynamic instance variable names
...hash.each {|k,v| instance_variable_set("@#{k}",v)}
– Andrei
Jun 10 '12 at 20:32
3
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How to interpolate variables in strings in JavaScript, without concatenation?
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You can take advantage of Template Literals and use this syntax:
`String text ${expression}`
Template literals are enclosed by the back-tick (` `) (grave accent) instead of double or single quotes.
This feature has been introduced in ES2015 (ES6).
Example
var...
Bash script to cd to directory with spaces in pathname
I'm using Bash on macOS X and I'd like to create a simple executable script file that would change to another directory when it's run. However, the path to that directory has spaces in it. How the heck do you do this? This is what I have...
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Excel Date to String conversion
...YY hh:mm:ss")
(24 hour time)
=TEXT(A1,"DD/MM/YYYY hh:mm:ss AM/PM")
(standard time)
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Failed to build gem native extension (installing Compass)
...form the following:
1. Set Up Ruby Environment
Ensure ruby is installed and up to date: ruby -v
Update gem's sudo gem update --system
2. Set Up MAC Environment
Install the Xcode Command Line Tools this is the key to install Compass.
xcode-select --install
Installing the Xcode Command Line ...
Keep-alive header clarification
I was asked to build a site , and one of the co-developer told me That I would need to include the keep-alive header.
1 An...
AWK: Access captured group from line pattern
If I have an awk command
6 Answers
6
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Textarea to resize based on content length [duplicate]
...box, it grows in length as needed to avoid having to deal with scroll bars and it need to shrink after delete text!
I didn’t want to go down the mootools or jquery route because I have a lightweight form.
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Disable LESS-CSS Overwriting calc() [duplicate]
...15px + 2em);
This works as Less concatenates values (the escaped strings and math result) with a space by default.
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Convert PEM to PPK file format
...EM files to PPK files? (you may guess that Amazon EC2 gives me a PEM file, and I need to use the PPK format for SSH connectivity).
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