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Check if a table exists in Rails

...e available in Rails 5: drop_table :kittens, if_exists: true Reference: https://github.com/rails/rails/pull/16366 And here's the Rails 5 ActiveRecord's CHANGELOG: Introduce the :if_exists option for drop_table. Example: drop_table(:posts, if_exists: true) That would execute: DRO...
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Crontab Day of the Week syntax

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INSERT … ON DUPLICATE KEY (do nothing)

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@Media min-width & max-width

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EC2 instance types's exact network performance?

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Sass .scss: Nesting and multiple classes?

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Center/Set Zoom of Map to cover all visible Markers?

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Backwards migration with Django South

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Implementing Fast and Efficient Core Data Import on iOS 5

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printf() formatting for hex

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