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What does !! mean in ruby?
...ugh since the only false values to Ruby are nil and false, so it's usually best to let that convention stand.
Think of it as
!(!some_val)
One thing that is it used for legitimately is preventing a huge chunk of data from being returned. For example you probably don't want to return 3MB of image...
Use Font Awesome Icons in CSS
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best answer, as you can just remove a previous <i> tag from before the text you want with the icon and replace with this. And the same space is given.
– andygoestohollywood
Nov 12 ...
Vim: faster way to select blocks of text in visual mode
...ding paragraph."
Understanding Vim as a language will help you to get the best mileage out of it.
After you have selecting down, then you can combine with other commands:
Vapd
With the above command, you can select around a paragraph and delete it. Change the d to a y to copy or to a c to chan...
How do I make background-size work in IE?
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The scale method doesn't keep the ratio though.. So it's best that your element has the same ratio as your image.
– Yves Van Broekhoven
Aug 31 '12 at 8:49
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TSQL Pivot without aggregate function
... @CharlesBretana, you are great! You saved my soul! ) That is the best solution. Thanks!
– Chaki_Black
Aug 3 '12 at 13:51
3
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Redirect website after certain amount of time
...uation.. sometime we need to redirect on specific event for that JS is the best option.
– Sunny S.M
Apr 7 '16 at 7:06
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Scroll to the top of the page using JavaScript?
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This seems to be the best way to go when dealing with SPAs
– Phil
Sep 29 '14 at 16:23
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How can I change the color of a part of a TextView?
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This the best answer by far.
– Pau Arlandis Martinez
Jun 24 '16 at 8:31
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Limit the length of a string with AngularJS
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This is the best answer. The performance hit should be negligible with a reasonable number of ng-repeat. If you're bringing back hundred's of ng-repeat with content that needs to be truncated then might need to go back to drawing board. ...
MySQL “NOT IN” query
...EXISTS predicate is about 30% less efficient […]
That’s why the best way to search for missing values in MySQL is using a LEFT JOIN / IS NULL or NOT IN rather than NOT EXISTS.
(emphases added)
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