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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...t([:first,:email]).group(:first,:email).having("count(*) > 1").count in order to work.
– Rafael Oliveira
Oct 6 '14 at 22:27
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How to use enum values in f:selectItem(s)
...ble to make the f:selectItem more flexible considering what happens if the order of the enums changes, and if the list was large? And could I do this better? And is it possible to automatically "select" the item that the question have?
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Using build types in Gradle to run same app that uses ContentProvider on one device
...oid manifest ContentProvider declaration to the appropriate build type. In order to do that we will simply have :
src/debug/AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.cyrilmottier.android....
How does the compilation/linking process work?
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GIT merge error “commit is not possible because you have unmerged files”
...s a conflict, so I had to delete the file locally then git add the_file in order to commit the merge.
– Brendon Muir
Sep 15 '16 at 23:14
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Django optional url parameters
... '()' and keyword arguments '{'pk': 128}' not found. 1 pattern(s) tried: ['orders/cannot_edit/((?P<pk>\\d+)/)?$']
– Patrick
Mar 29 '14 at 1:22
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Eclipse/Java code completion not working
...o previously suffering from Eclipse thinking my project was in 1.5 despite all options saying otherwise, so it must have been corrupted during this issue.
– Philip Guin
Jun 30 '13 at 6:51
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Force page scroll position to top at page refresh in HTML
... This is the correct answer. The jQuery solution does not work in all cases.
– Harry Stevens
Dec 5 '17 at 18:52
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What is the colon operator in Ruby?
..." # false
:foo.equal? :foo # true
This makes comparing two symbols really fast (since only a pointer comparison is involved, as opposed to comparing all the characters like you would in a string), plus you won't have a zillion copies of the same symbol floating about.
Also, unlike strings, sy...
How to disable google translate from html in chrome
... The value attribute should be changed to content="notranslate" in order to pass HTML5 validation.
– Leo Galleguillos
May 18 '17 at 23:09
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