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Rails find_or_create_by more than one attribute?
...e factored out of rails just the attribute specific ones.
https://github.com/rails/rails/blob/4-2-stable/guides/source/active_record_querying.md
Example
GroupMember.find_or_create_by_member_id_and_group_id(4, 7)
became
GroupMember.find_or_create_by(member_id: 4, group_id: 7)
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How can I find unused images and CSS styles in a website? [closed]
...1 should could work with newer versions of Firefox.
http://www.brothercake.com/dustmeselectors/
And here's another option:
https://addons.mozilla.org/en-US/firefox/addon/css-usage/
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Reverse engineering from an APK file to a project
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jQuery/JavaScript: accessing contents of an iframe
... Potentially any of the methods in the accepted answer here: stackoverflow.com/questions/3076414/… or others (like using your own domain as a proxy), depending upon what you want to achieve.
– Mark Amery
Aug 4 '13 at 9:09
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
...ava). All implementations are from the same author (me) and were made with comparable efforts at optimizations; thus the speed differences can be considered as really intrinsic to the functions.
As a point of comparison, consider that a recent hard disk will run at about 100 MB/s, and anything over...
How do you get the file size in C#?
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Also: social.msdn.microsoft.com/Forums/en-US/Vsexpressvcs/thread/… this is a discussion about how to get "the other value", which is size on disk.
– Marcin Deptuła
Sep 4 '09 at 18:39
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How to invert a grep expression
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Use command-line option -v or --invert-match,
ls -R |grep -v -E .*[\.exe]$\|.*[\.html]$
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What are the differences between LDAP and Active Directory?
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Preferred order of writing latitude & longitude tuples in GIS services
...ance one can offer is to be fully aware of the expected axis order of each component in your software stack. PostGIS expects lng/lat. WFS 1.0 uses lng/lat, but WFS 1.3.0 defers to the standard and uses lat/lng. GeoTools defaults to lat/lng but can be overridden with a system property.
The GeoTools ...
Combining multiple commits before pushing in Git [duplicate]
I have a bunch of commits on my local repository which are thematically similar. I'd like to combine them into a single commit before pushing up to a remote. How do I do it? I think rebase does this, but I can't make sense of the docs.
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