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How do I include negative decimal numbers in this regular expression?
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I don't know why you need that first [0-9].
Try:
^-?\d*(\.\d+)?$
Update
If you want to be sure that you'll have a digit on the ones place, then use
^-?\d+(\.\d+)?$
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How do HashTables deal with collisions?
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If chaining is used, when given a key, how do we know which item to get back?
– ChaoSXDemon
Oct 10 '15 at 4:04
1
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HTML table with fixed headers?
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@user5249203 I know you asked a few month ago but I had the same problem and it was due to border-collapse: see this : stackoverflow.com/questions/33777751/….
– archz
Nov 4 '16 at 9:59
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How to test chrome extensions?
...ert.calledWithMatch(chrome.browserAction.setBadgeText, {
text: "2"
});
Now we can wrap it into mocha's describe..it functions and run from terminal:
$ mocha
background page
✓ should display opened tabs count in button badge
1 passing (98ms)
You can find full example here.
Additionally,...
What is the main difference between Inheritance and Polymorphism?
...s just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to this but, none I have seen which provide a definitive answer.
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Use of 'prototype' vs. 'this' in JavaScript?
...type is TOTALLY DIFFERENT from the __proto__ property. In our example, 'A' now has TWO properties called 'prototype' and __proto__ . This is a big confusion for people. prototype and __proto__ properties are in no way related, they're separate things pointing to separate values.
You may wonder: Why...
How to find elements by class
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@pyCthon See answer for @jmunsch, BS now supports class_ which works properly.
– Wernight
Oct 6 '14 at 9:47
30
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Express next function, what is it really for?
...tes in between, but sometimes next is called without arguments. Anybody knows of a good tutorial etc that describes the next function?
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Is it possible to implement a Python for range loop without an iterator variable?
...munity wiki
7 revs, 3 users 87%Unknown
4
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Replacing H1 text with a logo image: best method for SEO and accessibility?
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Unfortunately the link in the comment left by @troynt is now broken. Here's a new permalink to the content: youtu.be/fBLvn_WkDJ4
– ahsteele
Mar 4 '13 at 18:46
10
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