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Rails Migration: Remove constraint

... This should be the selected answer – nahtnam Aug 9 '19 at 17:50 add a comment  |  ...
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?

...t more portable, but also increases the risk that the wrong interpreter is selected because it searches for a match in every directory on the executable search path. It also suffers from the same problem in that the path to the env binary may also be different on a per-machine basis."-Wikipedia ...
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What is a magic number, and why is it bad? [closed]

...Now, what you do is you have the 50 in different places - your SQL script (SELECT TOP 50 * FROM orders), your Website (Your Last 50 Orders), your order login (for (i = 0; i < 50; i++)) and possibly many other places. Now, what happens when someone decides to change 50 to 25? or 75? or 153? You n...
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Makefile variable as prerequisite

... this should be the selected answer. its a cleaner implementation. – sb32134 Mar 8 '16 at 15:57  |  ...
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Disable Required validation attribute under certain circumstances

...ation'); $('form').removeData('validator'); $.validator.unobtrusive.parse('selector for your form'); – Yannick Smits May 7 '12 at 14:59 ...
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Can you have additional .gitignore per directory within a single repo?

...untracked (Feb 2010) Further perhaps related: How do I tell git to always select my local version for conflicted merges on a specific file? share | improve this answer | fol...
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Hosting a Maven repository on github

...-------------------------------------- Visit github.com in your browser, select the mvn-repo branch, and verify that all your binaries are now there. Congratulations! You can now deploy your maven artifacts to a poor man's public repo simply by running mvn clean deploy. There's one more step ...
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How do I create a WPF Rounded Corner container?

...n. The extensions are VisiFire charting objects. The user pushes a button, selected from the list of buttons, to execute the desired chart. ' Create a ListBox of Buttons, one button for each MEF charting component. For Each c As Lazy(Of ICharts, IDictionary(Of String, Object)) In ext.C...
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Git workflow and rebase vs merge questions

...lligent use of interactive rebase and tools like tortoisegit (which allows selection of which commits to include) will help a lot. – prusswan Jun 27 '12 at 11:02 8 ...
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be

...s criteria, but if maturity were the only metric, I imagine you would have selected a BLAS or LAPACK based option. – Catskul Sep 9 '09 at 17:54 ...