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Using :before CSS pseudo element to add image to modal
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http://caniuse.com/#search=:after
:after and :before with content are okay to use as they're supported in every major browser other than Internet Explorer at least 5 versions back. Internet Explorer has complete support in version 9+ and p...
Parsing JSON from XmlHttpRequest.responseJSON
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New ways I: fetch
TL;DR I'd recommend this way as long as you don't have to send synchronous requests or support old browsers.
A long as your request is asynchronous you can use the Fetch API to send HTTP requests. The fetch API works with promises, whic...
What do helper and helper_method do?
...ers/views (standard helper methods are not available in controllers). e.g. common use case:
#application_controller.rb
def current_user
@current_user ||= User.find_by_id!(session[:user_id])
end
helper_method :current_user
the helper method on the other hand, is for importing an entire helper to...
Emacs: print key binding for a command or list all key bindings
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C-h f (or M-x describe-function) will show you the bindings for a command.
You are correct, C-h b (or M-x describe-bindings) will show you all bindings. C-h m (M-x describe-mode) is also handy to list bindings by mode.
You might also try C-h k (M-x describe-key) to show what command is bo...
Conditionally ignoring tests in JUnit 4
...alization.
An assumption failure causes the test to be ignored.
Edit: To compare with the @RunIf annotation from junit-ext, their sample code would look like this:
@Test
public void calculateTotalSalary() {
assumeThat(Database.connect(), is(notNull()));
//test code below.
}
Not to menti...
When to wrap quotes around a shell variable?
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Catch a thread's exception in the caller thread in Python
...ld thread, and it is in its own stack. One way I can think of right now to communicate this information to the parent thread is by using some sort of message passing, so you might look into that.
Try this on for size:
import sys
import threading
import Queue
class ExcThread(threading.Thread):
...
How to run cron job every 2 hours
...ry does not contain a version which includes different code: stackoverflow.com/posts/6423532/revisions
– tutuDajuju
Aug 31 '14 at 11:55
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Width equal to content [duplicate]
...loated elements, see this link for different techniques: http://css-tricks.com/all-about-floats/)
Demo: http://jsfiddle.net/CvJ3W/5/
Edit
If you go for the solution with display:inline-block but want to keep each item in one line, you can just add a <br> tag after each one:
<div id="co...
How can I use 'Not Like' operator in MongoDB
... 'ttt'} is generally equivalent to /ttt/ in mongodb, so your query would become:
db.test.find({c: {$not: /ttt/}}
EDIT2 (@KyungHoon Kim):
In python, below one works:
'c':{'$not':re.compile('ttt')}
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