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What is the easiest way to push an element to the beginning of the array?
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What about using the unshift method?
ary.unshift(obj, ...) → ary
Prepends objects to the front of self, moving other elements upwards.
And in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
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How can I get a JavaScript stack trace when I throw an exception?
If I throw a JavaScript exception myself (eg, throw "AArrggg" ), how can I get the stack trace (in Firebug or otherwise)? Right now I just get the message.
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django models selecting single field
I have a table/models called Employees and I would like to get all rows of a single field as a queryset.
5 Answers
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Best way to make Django's login_required the default
I'm working on a large Django app, the vast majority of which requires a login to access. This means that all throughout our app we've sprinkled:
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Check a collection size with JSTL
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<c:if test="${companies.size() > 0}">
</c:if>
This syntax works only in EL 2.2 or newer (Servlet 3.0 / JSP 2.2 or newer). If you're facing a XML parsing error because you're using JSPX or Facelets instead of JSP, then use gt ins...
How to duplicate sys.stdout to a log file?
Edit: Since it appears that there's either no solution, or I'm doing something so non-standard that nobody knows - I'll revise my question to also ask: What is the best way to accomplish logging when a python app is making a lot of system calls?
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if a ngSrc path resolves to a 404, is there a way to fallback to a default?
The application I'm building requires my user to set 4 pieces of information before this image even has a chance of loading. This image is the center-piece of the application, so the broken image link makes it look like the whole thing is borked. I'd like to have another image take its place on a 4...
Get and set position with jQuery .offset()
How to get and set the position of an element with the jQuery .offset method?
5 Answers
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android get real path by Uri.getPath()
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Is it really necessary for you to get a physical path?
For example, ImageView.setImageURI() and ContentResolver.openInputStream() allow you to access the contents of a file without knowing its real path.
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How many levels of pointers can we have?
How many pointers ( * ) are allowed in a single variable?
14 Answers
14
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