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How to understand nil vs. empty vs. blank in Ruby
... nil? , blank? , and empty? in Ruby on Rails. Here's the closest I've come:
14 Answers
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Get elements by attribute when querySelectorAll is not available without using libraries?
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Using != null is the ideal way (better than my comment above) because in old IE it is possible for getAttribute to return a value whose typeof is 'number'
– ryanve
Nov 24 '12 at 19:51
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How to sort an array of hashes in ruby
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How do I simply create a patch from my latest git commit?
I'm looking for the magic command of creating a patch from the last commit made.
5 Answers
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Calculating width from percent to pixel then minus by pixel in LESS CSS
...escape the calc arguments in order to prevent them from being evaluated on compilation.
Using your example, you would simply surround the arguments, like this:
calc(~'100% - 10px')
Demo : http://jsfiddle.net/c5aq20b6/
I find that I use this in one of the following three ways:
Basic Escapin...
How to convert 1 to true or 0 to false upon model fetch
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Should I avoid 'async void' event handlers?
... app, but I've used solutions similar to that in the past. I.e., make the ICommand.Execute method async void; I consider this acceptable since ICommand.Execute is logically an event handler.
– Stephen Cleary
Nov 6 '18 at 17:35
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Is there any way to view the currently mapped keys in Vim?
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You can do that with the :map command. There are also other variants.
:nmap for normal mode mappings
:vmap for visual mode mappings
:imap for insert mode mappings
The above list is not complete. Typing :help map in Vim will give you more info.
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Java - Including variables within strings?
...re attractive than a simple String concatenation expression. Where format comes into its own is when you need to do padding, number formatting, etcetera.
– Stephen C
Mar 10 '12 at 4:19
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