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Can we use join for two different database tables?
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RePierreRePierre
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Loop through files in a directory using PowerShell
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Vince G
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answered Sep 17 '13 at 11:37
Shay LevyShay Levy
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How to create duplicate allowed attributes
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answered Feb 16 '09 at 14:59
Anton GogolevAnton Gogolev
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Run a callback only if an attribute has changed in Rails
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200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_chan...
How to show first commit by 'git log'?
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Short answer
git rev-list --max-parents=0 HEAD
(from tiho's comment. As Chris Johnsen notices, --max-parents was introduced after this answer was posted.)
Explanation
Technically, there may be more than one root commit. This happens when multiple previously ind...
HTML: How to limit file upload to be only images?
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answered Oct 13 '09 at 19:32
Ms2gerMs2ger
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lock(new object()) — Cargo cult or some crazy “language special case”?
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edited Aug 20 '12 at 13:43
sehe
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What is the string length of a GUID?
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Guid.NewGuid().ToString("X") => 68 characters (Hexadecimal)
outputs: {0x12345678,0x1234,0x1234,{0x12,0x34,0x12,0x34,0x56,0x78,0x9a,0xbc}}
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$http get parameters does not work
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edited Jun 30 '14 at 21:48
oxfn
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ans...
How do I find out which settings.xml file maven is using
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Use the Maven debug option, ie mvn -X :
Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)
Maven home: /usr/java/apache-maven-3.0.3
Java version: 1.6.0_12, vendor: Sun Microsystems Inc.
Java home: /usr/java/jdk1.6.0_12/jre
Default locale: en_US, platform encoding: UTF-8
OS n...