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How to check if a model has a certain column/attribute?
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edited Sep 25 '15 at 4:34
mahemoff
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java: ArrayList - how can i check if an index exists?
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answered Jan 25 '10 at 11:14
AmarghoshAmarghosh
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How to downgrade or install an older version of Cocoapods
... of cocoa pods via the following command:
sudo gem install cocoapods -v 0.25.0
You can use older installed versions with following command:
pod _0.25.0_ setup
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YAML Multi-Line Arrays
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254
A YAML sequence is an array. So this is the right way to express it:
key:
- string1
- str...
What are the differences between segment trees, interval trees, binary indexed trees and range trees
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All these data structures are used for solving different problems:
Segment tree stores intervals, and optimized for "which of these...
What is the difference between bool and Boolean types in C#
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answered Sep 25 '08 at 17:39
Kent BoogaartKent Boogaart
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What is the fastest integer division supporting division by zero no matter what the result is?
... T t, U u ) -> decltype(t/(u+!u)) { return t/(u+!u); } And if you want 255, (lhs)/(rhs+!rhs) & -!rhs
– Yakk - Adam Nevraumont
May 27 '13 at 18:08
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How to use the 'sweep' function
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edited Jul 25 '19 at 10:13
Rekyt
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answered May 3 '11 at...
C++ catching all exceptions
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answered Nov 25 '08 at 0:22
Greg DGreg D
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Index on multiple columns in Ruby on Rails
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edited Mar 25 '17 at 14:04
Nick Merrill
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