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How to restart a rails server on Heroku?
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435
The answer was:
heroku restart -a app_name
# The -a is the same as --app
Easily aliased wi...
How to change past commit to include a missed file?
... set. After other commits, I realized the file is now missing from a HEAD^4 commit.
4 Answers
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Can I install the “app store” in an IOS simulator?
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WrightsCSWrightsCS
49.5k2222 gold badges130130 silver badges179179 bronze badges
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Appending to an empty DataFrame in Pandas?
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408
That should work:
>>> df = pd.DataFrame()
>>> data = pd.DataFrame({"A": ran...
Elegant method to generate array of random dates within two dates
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4 Answers
4
Active
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What is javax.inject.Named annotation supposed to be used for?
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4 Answers
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Active
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How does Rails keep track of which migrations have run for a database?
...chema_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 migrations fo...
Sublime Text 2 - Link with Editor / Show file in sidebar
...well!
– Sir.Nathan Stassen
Apr 11 '14 at 15:58
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Do you have to include ?
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Visakh B Sujathan
26944 silver badges2323 bronze badges
answered Jul 11 '11 at 0:36
Brian GrahamBrian Graham
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Find difference between timestamps in seconds in PostgreSQL
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246
Try:
SELECT EXTRACT(EPOCH FROM (timestamp_B - timestamp_A))
FROM TableA
Details here: EXTR...