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Validate decimal numbers in JavaScript - IsNumeric()

What's the cleanest, most effective way to validate decimal numbers in JavaScript? 49 Answers ...
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Python - Passing a function into another function

I am solving a puzzle using python and depending on which puzzle I am solving I will have to use a special set of rules. How can I pass a function into another function in Python? ...
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jQuery returning “parsererror” for ajax request

Been getting a "parsererror" from jquery for an Ajax request, I have tried changing the POST to a GET, returning the data in a few different ways (creating classes, etc.) but I cant seem to figure out what the problem is. ...
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What's the difference between belongs_to and has_one?

What is the difference between a belongs_to and a has_one ? 5 Answers 5 ...
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ERROR 1452: Cannot add or update a child row: a foreign key constraint fails

I have created tables in MySQL Workbench as shown below : 21 Answers 21 ...
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How to get a DOM Element from a JQuery Selector

I'm having an impossibly hard time finding out to get the actual DOMElement from a jquery selector. Sample Code: 4 Answers...
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Simpler way to create dictionary of separate variables?

I would like to be able to get the name of a variable as a string but I don't know if Python has that much introspection capabilities. Something like: ...
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Is there a difference between YES/NO,TRUE/FALSE and true/false in objective-c?

Simple question really; is there a difference between these values (and is there a difference between BOOL and bool)? A co-worker mentioned that they evaluate to different things in Objective-C, but when I looked at the typedefs in their respective .h files, YES/TRUE/true were all defined as 1 an...
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How do I specify unique constraint for multiple columns in MySQL?

I have a table: 14 Answers 14 ...
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reformat in vim for a nice column layout

I have this dataset in a csv file 13 Answers 13 ...