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Simple regular expression for a decimal with a precision of 2
...t:
\d+(\.\d{1,2})?
Both assume that both have at least one digit before and one after the decimal place.
To require that the whole string is a number of this form, wrap the expression in start and end tags such as (in Perl's form):
^\d+(\.\d{1,2})?$
To match numbers without a leading digit be...
How to add a right button to a UINavigationController?
...ll might be quite a while before it displays, no point in doing work early and tying up memory.
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"Show" style:UIBarButtonItemStylePlain target:self action:@selector(refreshPropert...
Change select box option background color
I have a select box and I'm trying to change the background color of the options when the select box has been clicked and shows all the options.
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What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space) [dupli
...
I think you got a slight misunderstanding what the first one means.
.element .symbol {}
Means that those CSS settings are applied to any HTML element with the class .symbol that is inside an element with the class .element.
<div class="element">
...
jquery get all form elements: input, textarea & select
...without listing them all separately) in jquery to select all form elements and only form elements.
12 Answers
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How to “pretty” format JSON output in Ruby on Rails
...client-side debugging as any tools worth their salt (eg. Firebug) already handle prettyprinting JSON.
– lambshaanxy
Sep 20 '11 at 3:37
8
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“Cloning” row or column vectors
... into a 2D array with length 1 in the first axis (vertical on your screen) and length 3 in the second axis (horizontal on your screen). Transposing then makes it have length 3 in the first axis and length 1 in the second axis. A tile shape of (1, 3) copies this column over three times, which is why ...
Heatmap in matplotlib with pcolor?
...urce : http://flowingdata.com/2010/01/21/how-to-make-a-heatmap-a-quick-and-easy-solution/
#
# Other Links:
# http://stackoverflow.com/questions/14391959/heatmap-in-matplotlib-with-pcolor
#
# ------------------------------------------------------------------------
import matplotlib.pyplot as...
iPhone: Setting Navigation Bar Title
Hey all. I'm still pretty new to iPhone development, and I'm having a bit of trouble figuring out how to change the title of my Navigation Bar. On another question on this site somebody recommended using :
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Android Studio - Ambiguous method call getClass()
I'm using Android Studio for my Android application.
My code works and compiles.
Recently, the IDE showes me error (red lines) on getClass of the following code:
...