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rails 3 validation on uniqueness on multiple attributes

....1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723 14.0484 41.5985 12.6954 41.5985 10.1419V6.59049C41.5985 5.28821 41.1394 4.66232 40.1061 4.66232C39.0732 4.66232 38.5948 5.28821 38.5948 6.59049V9.60062C38.5948 10.8521...
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Find rows that have the same value on a column in MySQL

... answered Jul 18 '18 at 14:19 Marc LMarc L 3133 bronze badges ...
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What is the most efficient string concatenation method in python?

...hich requires O(1)? – CGFoX Oct 30 '19 at 7:23 add a comment  |  ...
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':app:lintVitalRelease' error when generating signed apk

...e issues. – Paweł Nadolski Jan 24 '19 at 13:29  |  show 3 more comments ...
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Set a DateTime database field to “Now”

...ons/7105093/… – Mladen B. Feb 28 '19 at 11:37 add a comment  |  ...
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Brew update failed: untracked working tree files would be overwritten by merge

... answered Jan 1 '13 at 19:23 favorettifavoretti 26.2k44 gold badges4141 silver badges5656 bronze badges ...
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Private virtual method in C++

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How to start new activity on button click

... 19 Where is the button click part? (button click → transition to next activity) – Jonny Nov 5 '12 at ...
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@Basic(optional = false) vs @Column(nullable = false) in JPA

... answered May 24 '10 at 19:52 Pascal ThiventPascal Thivent 524k126126 gold badges10121012 silver badges10991099 bronze badges ...
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Entity Framework 4 - AddObject vs Attach

...nitions. Really appreciate your time though. :) – RPM1984 Oct 13 '10 at 1:31 1 ...