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What's the meaning of 'origin' in 'git push origin master'
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origin is the default name of the remote git repository you cloned from. Have a look at .git/ref...
Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
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You need to add this to your environment.rb
config.action_mailer.default_url_options = { :ho...
Why were pandas merges in python faster than data.table merges in R in 2012?
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4 Answers
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Python memory usage of numpy arrays
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You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
>&g...
Transaction isolation levels relation with locks on table
I have read about 4 levels of isolation:
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SSO with CAS or OAuth?
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OpenID is not a 'successor' or 'substitute' for CAS, they're different, in intent and in implem...
What is the difference between `after_create` and `after_save` and when to use which?
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after_create only works once - just after the record is first created.
after_save works every t...
How can I reference a commit in an issue comment on GitHub?
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answered Jan 18 '12 at 12:47
Sebastian Paaske TørholmSebastian Paaske Tørholm
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How to convert a private key to an RSA private key?
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Paul KehrerPaul Kehrer
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