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How do I preview emails in Rails?

...w.rb class NotifierPreview < ActionMailer::Preview # Accessible from http://localhost:3000/rails/mailers/notifier/welcome def welcome Notifier.welcome(User.first) end end share | impr...
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How do I join two SQLite tables in my Android application?

...a.questionid; This is from memory so there may be some syntactic issues. http://www.sqlite.org/lang_createview.html I mention this approach because then you can use SQLiteQueryBuilder with the view as you implied that it was preferred. ...
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How to disable/enable select field using jQuery?

...i</option> </select> pizza. </form> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> <script> var update_pizza = function () { if ($("#pizza").is(":checked")) { $('#pizza_kind').prop('disabled', false); ...
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Objective-C and Swift URL encoding

...tle more work. Example code iOS7 and above: NSString *unescaped = @"http://www"; NSString *escapedString = [unescaped stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]]; NSLog(@"escapedString: %@", escapedString); NSLog output: escapedString:...
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How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP

... be manipulated from within a Python program as the variable sys.path. http://docs.python.org/2/using/cmdline.html#envvar-PYTHONPATH What you're looking for is PATH. export PATH=$PATH:/home/randy/lib/python However, to run your python script as a program, you also need to set a shebang for...
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How can I detect if a selector returns null?

...r runs firstExistingElement.doSomething(); //<-executes on #iExist http://jsfiddle.net/vhbSG/ share | improve this answer | follow | ...
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Does anyone beside me just NOT get ASP.NET MVC? [closed]

...s that WebForms will not only remain, but continue to be developed for... http://haacked.com http://www.misfitgeek.com http://rachelappel.com ... and so on... For those concerned about the route MVC is taking, I'd suggest giving "the guys" your feedback. They appear to be listening so far! ...
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Convert JSON to Map

...ut writing your own parser. :-) For such a simple mapping, most tools from http://json.org (section java) would work. For one of them (Jackson https://github.com/FasterXML/jackson-databind/#5-minute-tutorial-streaming-parser-generator), you'd do: Map<String,Object> result = new ObjectM...
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jQuery event for images loaded

... the canonical plugin for detecting image load complete events is now at: https://github.com/desandro/imagesloaded share | improve this answer | follow | ...
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Apache2: 'AH01630: client denied by server configuration'

...ou are using Apache 2.4 You have to check allow and deny rules Check out http://httpd.apache.org/docs/2.4/upgrading.html#access In 2.2, access control based on client hostname, IP address, and other characteristics of client requests was done using the directives Order, Allow, Deny, and Sa...