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Rails DB Migration - How To Drop a Table?
...opProductsTable
This will generate a .rb file in /db/migrate/ like 20111015185025_drop_products_table.rb
Now edit that file to look like this:
class DropProductsTable < ActiveRecord::Migration
def up
drop_table :products
end
def down
raise ActiveRecord::IrreversibleMigration
...
Software keyboard resizes background image on Android
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edited Apr 4 '16 at 11:15
Basheer AL-MOMANI
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a...
Does MySQL ignore null values on unique constraints?
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Mark ByersMark Byers
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How to add multi line comments in makefiles
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154
No, there is nothing like C-style /* */ comments in makefiles. As somebody else suggested, yo...
Bootstrap modal appearing under background
...other idea?
– Tuan Anh Tran
Feb 24 '15 at 7:18
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show 14 more comments
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Unable to forward search Bash history similarly as with CTRL-r
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idbrii
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answered Apr 26 '09 at 23:09
hlovdalhlovdal
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What is the use for IHttpHandler.IsReusable?
...bles would be safe?
– Ben Amada
Dec 15 '12 at 4:55
2
Sure. I've rephrased the last recommendation...
How do I find duplicates across multiple columns?
... inner query.
– Adam Parkin
Jan 13 '15 at 23:52
3
If the values can possibly contain null then (u...
How to find all occurrences of a substring?
...m.start() for m in re.finditer('test', 'test test test test')]
#[0, 5, 10, 15]
If you want to find overlapping matches, lookahead will do that:
[m.start() for m in re.finditer('(?=tt)', 'ttt')]
#[0, 1]
If you want a reverse find-all without overlaps, you can combine positive and negative lookah...
Can't choose class as main class in IntelliJ
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answered Feb 19 '14 at 15:08
trappskitrappski
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