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When to choose mouseover() and hover() function?
...elements.
Calling $(selector).hover(handlerIn, handlerOut) is shorthand for:
$(selector).mouseenter(handlerIn).mouseleave(handlerOut);
.mouseenter()
Bind an event handler to be fired when the mouse enters an element,
or trigger that handler on an element.
mouseover fires when the pointer ...
Find the extension of a filename in Ruby
...
That's really basic stuff:
irb(main):002:0> accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? File.extname("example.pdf")
=> true
irb(main)...
Revert the `--no-site-packages` option with virtualenv
...onment, and python3.4 corresponds to whichever version of python involved, for example:
$ rm venv/lib/python3.4/no-global-site-packages.txt
And if you change your mind and want to put it back:
$ touch venv/lib/python3.4/no-global-site-packages.txt
Note: If you don't see the above file, then yo...
How to detect online/offline event cross-browser?
... navigator.onLine is supported across all major browsers (and has been for some time): caniuse.com/#feat=online-status
– Rafael Lüder
Mar 30 '18 at 17:59
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How to change owner of PostgreSql database?
...ABASE name OWNER TO new_owner;
See the Postgresql manual's entry on this for more details.
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Alter table add multiple columns ms sql
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Also check your commas, looks like you're missing several for the second-to-last columns being added
– Philip Kelley
Mar 26 '10 at 13:51
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Get Context in a Service
... these 4 words just solved my problem that I have been trying to solve for 3 hours.
– Nirup Iyer
Aug 10 '17 at 15:56
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How do I force git to checkout the master branch and remove carriage returns after I've normalized f
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Thanks for this workaround, but it's glaring issue in git that "checkout -f" doesn't really force re-checkout. Another woraround would be to remove all working copy files first (i.e. everything but .git dir).
–...
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...od throws an error. It returns an instance of ActionController::Parameters for the key passed into require.
The permit method returns a copy of the parameters object, returning only the permitted keys and values. When creating a new ActiveRecord model, only the permitted attributes are passed into ...
What does “@” mean in Windows batch scripts
...d. Compare the following two batch files:
@echo foo
and
echo foo
The former has only foo as output while the latter prints
H:\Stuff>echo foo
foo
(here, at least). As can be seen the command that is run is visible, too.
echo off will turn this off for the complete batch file. However, t...