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Iterate a list with indexes in Python
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356
>>> a = [3,4,5,6]
>>> for i, val in enumerate(a):
... print i, val
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Rails 4: before_filter vs. before_action
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5 Answers
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Why does csvwriter.writerow() put a comma after each character?
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151
It expects a sequence (eg: a list or tuple) of strings. You're giving it a single string. A str...
Run a callback only if an attribute has changed in Rails
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Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://githu...
Xcode 4 - “Archive” is greyed out?
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Rafael Bugajewski
1,55833 gold badges2020 silver badges3636 bronze badges
answered Mar 11 '11 at 0:05
jasonjason
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Responding with a JSON object in Node.js (converting object/array to JSON string)
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edited Dec 4 '17 at 6:25
answered Mar 21 '12 at 14:03
Ke...
relative path in require_once doesn't work
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edited Jan 14 '14 at 17:54
DarkSide
3,34711 gold badge2222 silver badges3131 bronze badges
answered Ma...
Git: How to remove file from historical commit?
I have commit with id 56f06019 (for example). In that commit i have accidentally commited large file (50Mb). In another commit i add the same file but in the right size (small). Now my repo when i clone is too heavy :( How to remove that large file from repo history to reduce the size of my repo ?
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How do you install ssh-copy-id on a Mac?
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5 Answers
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Change how fast “title” attribute's tooltip appears
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5 Answers
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