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What's the state of the art in email validation for Rails?
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With Rails 3.0 you can use a email validation without regexp using the Mail gem.
Here is my implementation (packaged as a gem).
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How does MySQL process ORDER BY and LIMIT in a query?
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It will order first, then get the first 20. A database will also process anything in the WHERE clause before ORDER BY.
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Do we need type=“text/css” for in HTML5 [duplicate]
...ibute is purely advisory and explains in detail how browsers should act if it's omitted (too much to quote here). It doesn't explicitly say that an omitted type attribute is either valid or invalid, but you can safely omit it knowing that browsers will still react as you expect.
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Using git, how do I ignore a file in one branch but have it committed in another branch?
... to Heroku . The source code tree includes a bunch of mp3 files (the website will be for a recording project I was heavily involved with).
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How to make a variadic macro (variable number of arguments)
I want to write a macro in C that accepts any number of parameters, not a specific number
5 Answers
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WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings
I have a Menu where each MenuItem in the hierarchy has its Command property set to a RoutedCommand I've defined. The associated CommandBinding provides a callback for the evaluation of CanExecute which controls the enabled state of each MenuItem .
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Node.js Mongoose.js string to ObjectId function
...ing mongoose? The schema specifies that something is an ObjectId, but when it is saved from a string, mongo tells me it is still just a string. The _id of the object, for instance, is displayed as objectId("blah") .
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Read a text file using Node.js?
I need to pass in a text file in the terminal and then read the data from it, how can I do this?
5 Answers
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What is the use of the square brackets [] in sql statements?
... brackets offer any advantage? When I hand code T-SQL I've never bothered with them.
9 Answers
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How to detect online/offline event cross-browser?
...ost, others don't.
From the spec:
Returns false if the user agent is
definitely offline (disconnected from
the network). Returns true if the user
agent might be online.
The events online and offline are
fired when the value of this attribute
changes.
The navigator.onLine attribute must
return false...