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ActiveRecord.find(array_of_ids), preserving order

... Do you happen to know the equivalent of FIELDS() in Postgres? – Trung Lê Jun 26 '12 at 6:27 3 ...
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grep a tab in UNIX

... It doesn't seem to work against my pattern. Attempting to use that syntax prints nothing. (Is the Mac OS X variant different?) – futureelite7 Feb 28 '10 at 15:42 ...
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Printing leading 0's in C?

I'm trying to find a good way to print leading 0's, such as 01001 for a zipcode. While the number would be stored as 1001, what is a good way to do it? ...
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what is the difference between ajax and jquery and which one is better? [closed]

I am confused about using ajax or jquery so I want to know what the differences are and which one is better such as performance and complexity . ...
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Length of a JavaScript object

...ave a JavaScript object. Is there a built-in or accepted best practice way to get the length of this object? 39 Answers ...
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How do you print out a stack trace to the console/log in Cocoa?

I'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions. 6 Answers ...
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What does .class mean in Java?

... And how does Android handle new Intent(this, Activity.class? Will it try to find out class Activity by comparing each class? – Zhipeng YANG Sep 21 '16 at 13:28 ...
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How to implement a tree data-structure in Java? [closed]

Is there any standard Java library class to represent a tree in Java? 24 Answers 24 ...
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Setting a property by reflection with a string value

I'd like to set a property of an object through Reflection, with a value of type string . So, for instance, suppose I have a Ship class, with a property of Latitude , which is a double . ...
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Ternary operation in CoffeeScript

I need to set value to a that depends on a condition. 7 Answers 7 ...