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Can CSS detect the number of children an element has?
...elects based on the number of siblings.
Credit for this technique goes to André Luís (discovered) & Lea Verou (refined).
Don't you just love CSS3? ????
CodePen Example:
https://codepen.io/mattlubner-the-decoder/pen/ExaQZQR
Sources:
http://andr3.net/blog/post/142 (André Luís)
http://...
jQuery Validate Plugin - How to create a simple custom rule?
...|| (parseFloat(value) > 0);
}, "* Amount must be greater than zero");
And then applying this like so:
$('validatorElement').validate({
rules : {
amount : { greaterThanZero : true }
}
});
Just change the contents of the 'addMethod' to validate your checkboxes.
...
Efficiency of purely functional programming
... Pippenger [1996], when comparing a Lisp system that is purely functional (and has strict evaluation semantics, not lazy) to one that can mutate data, an algorithm written for the impure Lisp that runs in O(n) can be translated to an algorithm in the pure Lisp that runs in O(n log n) time (based on ...
“[notice] child pid XXXX exit signal Segmentation fault (11)” in apache error.log [closed]
...
Attach gdb to one of the httpd child processes and reload or continue working and wait for a crash and then look at the backtrace. Do something like this:
$ ps -ef|grep httpd
0 681 1 0 10:38pm ?? 0:00.45 /Applications/MAMP/Library/bin/httpd -k start
501...
Is there a Pattern Matching Utility like GREP in Windows?
Is there a similar utility to grep available from the Windows Command Prompt, or is there a third party tool for it?
32 A...
When to add what indexes in a table in Rails
...ld be better, because it accelerates the search in sorting in this column. And Foreign keys are something searched for a lot.
Since Version 5 of rails the index will be created automatically, for more information see here.
Should I add "index" to the automatically created "id" column?
No, thi...
nServiceBus vs Mass Transit vs Rhino Service Bus vs other?
...
I'd recommend staying away from hand-rolled solutions as there is a bunch of somewhat difficult stuff that needs to be gotten just right - like how transactions are handled, how exceptions cause rollbacks, how to stop rolling back endlessly (poison messages)...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
I'm working through some exercises and have got a warning that states:
4 Answers
4
...
How to make a Bootstrap accordion collapse when clicking the header div?
... to do is to to use...
data-toggle="collapse"
data-target="#ElementToExpandOnClick"
...on the element you want to click to trigger the collapse/expand effect.
The element with data-toggle="collapse" will be the element to trigger the effect.
The data-target attribute indicates the element tha...
How do I restrict a float value to only two places after the decimal point in C?
...e: round down (ie, truncate after two decimal places), rounded to nearest, and round up. Usually, you want round to nearest.
As several others have pointed out, due to the quirks of floating point representation, these rounded values may not be exactly the "obvious" decimal values, but they will b...