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How does Rails keep track of which migrations have run for a database?
... row from schema_migrations.
For example, running a migration file named 20120620193144_create_users.rb will insert a new row with a version of 20120620193144 into the schema_migrations table.
You are free at any point to introduce migrations with earlier versions. Rails will always run any new mi...
How to change owner of PostgreSql database?
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edited Feb 20 '13 at 12:26
ctford
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Getting number of elements in an iterator in Python
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101
No. It's not possible.
Example:
import random
def gen(n):
for i in xrange(n):
if...
Python - use list as function parameters
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edited Jun 18 '15 at 21:03
answered Apr 16 '13 at 18:04
M...
Resolving conflicts: how to accept “their” changes automatically?
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answered Mar 21 '13 at 11:10
NofflsNoffls
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Is null reference possible?
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edited Dec 6 '10 at 9:05
answered Dec 6 '10 at 8:46
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How to find an element by matching exact text of the element in Capybara
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ndnenkov
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answered Jan 31 '14 at 18:03
John WJohn W
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How do I merge a git tag onto a branch
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edited Jun 11 '13 at 20:08
answered Jun 11 '13 at 19:44
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Why can I type alias functions and use them without casting?
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You can also use is := make(MySlice, 0); m := make(MyMap), which is more readable in some contexts.
– R2B2
Oct 23 '18 at 11:03
add a comm...
Get Selected index of UITableView
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answered Oct 27 '10 at 7:45
Chris GummerChris Gummer
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