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Is there any Rails function to check if a partial exists?

..., I'm using the following in my Rails 3/3.1 projects: lookup_context.find_all('posts/_form').any? The advantage over other solutions I've seen is that this will look in all view paths instead of just your rails root. This is important to me as I have a lot of rails engines. This also works in R...
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How can I safely encode a string in Java to use as a filename?

...m with escape sequences. The reverse of the above encoding should be equally straight-forward to implement. share | improve this answer | follow | ...
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How to delete all Annotations on a MKMapView

Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c? ...
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Change the selected value of a drop-down list with jQuery

... jQuery's documentation states: [jQuery.val] checks, or selects, all the radio buttons, checkboxes, and select options that match the set of values. This behavior is in jQuery versions 1.2 and above. You most likely want this: $("._statusDDL").val('2'); ...
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How to specify different Debug/Release output directories in QMake .pro file

...ke things even easier to switch around, only define your DESTDIRs conditionally, and then use that value in all your other paths: OBJECTS_DIR = $${DESTDIR}/.obj. Cheers! – Xavier Holt Mar 7 '12 at 4:16 ...
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How to track untracked content?

...plugins/open_flash_chart_2 starts out as an independent Git repository. Usually such sub-repositories are ignored, but if you tell git add to explicitly add it, then it will create an gitlink entry that points to the sub-repository’s HEAD commit instead of adding the contents of the directory. It ...
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Drop all tables whose names begin with a certain string

How can I drop all tables whose names begin with a given string? 14 Answers 14 ...
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How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?

... Excellent. I wasn't trying to implement Elmah at all. I was just trying to hook up my own error reporting I've used for years in a way that works well with MVC. Your code gave me a starting point. +1 – Steve Wortham Nov 18 '09 at 3:...
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Cast Int to enum in Java

... 0 or 1, i.e. a valid ordinal for that enum. Note that in Java enums actually are classes (and enum values thus are objects) and thus you can't cast an int or even Integer to an enum. share | impr...
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How do I concatenate strings and variables in PowerShell?

... This isn't technically concatenation. – TravisEz13 Jun 14 '16 at 17:59 9 ...