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Rails: select unique values from a column
I already have a working solution, but I would really like to know why this doesn't work:
12 Answers
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Why all the Active Record hate? [closed]
...irst.company and it doesn't need to hit the database because the data is already present.
@pix0r
The inherent problem with Active Record is that database queries are automatically generated and executed to populate objects and modify database records
Code:
person = Person.find_by_sql("gi...
Uniq by object attribute in Ruby
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@brauliobo for Ruby 1.8 you need to read just below in this same SO: stackoverflow.com/a/113770/213191
– Peter H. Boling
Jul 20 '16 at 3:27
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Animation CSS3: display + opacity
...tually useless because the first Opera version to support animations was already based on webkit.
– Rico Ocepek
Feb 23 '18 at 12:51
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How to get UILabel to respond to tap?
...NSMutableAttributedString = NSMutableAttributedString(string: "Tap here to read the latest Football News.")
newsString.addAttributes([NSUnderlineStyleAttributeName: NSUnderlineStyle.StyleDouble.rawValue], range: NSMakeRange(4, 4))
sampleLabel.attributedText = newsString.copy() as? NSAttribut...
How to test if a double is an integer
... I really love the simplicity of this solution. It's both easy to read and to implement.
– krispy
Feb 27 '14 at 21:03
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What's the best way to do “application settings” in Android? [closed]
... by only the calling application. Other two mode supported are MODE_WORLD_READABLE and MODE_WORLD_WRITEABLE. In MODE_WORLD_READABLE other application can read the created file but can not modify it. In case of MODE_WORLD_WRITEABLE other applications also have write permissions for the created file....
PostgreSQL query to list all table names?
...
tablename as table
from
pg_tables
where schemaname = 'public'
Read more about pg_tables
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GET URL parameter in PHP
...LTERS:
echo filter_input(INPUT_GET,"link",FILTER_SANITIZE_STRING);
More reading on php.net function filter_input, or check out the description of the different filters
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Get the (last part of) current directory name in C#
...akes an assumption as to where the string is coming from. What if they're reading *nix logs on a Windows System? Then the wrong character will be utilized and you'll end up with the entire path, rather than the intended effect. Just my 2 cents.
– Bob G
May 1...