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Decimal number regular expression, where digit after decimal is optional
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/\d+\.?\d*/
One or more digits (\d+), optional period (\.?), zero or more digits (\d*).
Depending on your usage or regex engine you may need to add start/end line anchors:
/^\d+\.?\d*$/
Debuggex Demo
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Is there a way to loop through a table variable in TSQL without using a cursor?
...ch every single row in the table, the EXISTS only needs to touch the first one (see Josef's answer below).
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favicon.png vs favicon.ico - why should I use PNG instead of ICO?
...nel ICOs as well, such as the Dynamic Drive tool and Photoshop plugin mentioned by @mercator.
Feel free to consult the other answers here for more details.
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Sort array by firstname (alphabetically) in Javascript
I got an array (see below for one object in the array) that I need to sort by firstname using JavaScript.
How can I do it?
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Why does NULL = NULL evaluate to false in SQL server
...hould be treated as x = y, where x and y are unbound variables. Now if someone asks you, what is the value of x = y? The only reasonable answer is, "some z". So we have (x = y) = z - or, transcribing it back to SQL, (NULL = NULL) = NULL.
– Pavel Minaev
Dec 4 '0...
How can I selectively merge or pick changes from another branch in Git?
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You use the cherry-pick command to get individual commits from one branch.
If the change(s) you want are not in individual commits, then use the method shown here to split the commit into individual commits. Roughly speaking, you use git rebase -i to get the original commit to edit, the...
Access Container View Controller from Parent iOS
...ributes inspector in Storyboard. Then have the parent view controller (the one housing the container view) implement a method like this:
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
NSString * segueName = segue.identifier;
if ([segueName isEqualToString: @"alertview...
@property retain, assign, copy, nonatomic in Objective-C
As someone that's new to Objective-C can someone give me an overview of the retain, assign, copy and any others I'm missing, that follow the @property directive? What are they doing and why would I want to use one over another?
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What is the purpose of using -pedantic in GCC/G++ compiler?
...remove I can have my code more compatible to other compiler like Microsoft one?
– huahsin68
May 19 '10 at 1:35
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How to combine two or more querysets in a Django view?
...w to display the results. But to do that, I have to merge 3 querysets into one.
13 Answers
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