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Aligning UIToolBar items
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nduplessisnduplessis
11.7k22 gold badges3333 silver badges5353 bronze badges
25
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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...that looks like this:
{[nil, nil]=>512,
["Joe", "test@test.com"]=>23,
["Jim", "email2@gmail.com"]=>36,
["John", "email3@gmail.com"]=>21}
Thought that was pretty cool and hadn't seen it before.
Credit to Taryn, this is just a tweaked version of her answer.
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What is the Oracle equivalent of SQL Server's IsNull() function?
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131
coalesce is supported in both Oracle and SQL Server and serves essentially the same function as...
GROUP_CONCAT ORDER BY
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317
You can use ORDER BY inside the GROUP_CONCAT function in this way:
SELECT li.client_id, grou...
Which data type for latitude and longitude?
...c if you need absolute precision. 2 bytes for each group of 4 digits, plus 3 - 8 bytes overhead.
Read the fine manual about numeric types and geometric types.
The geometry and geography data types are provided by the additional module PostGIS and occupy one column in your table. Each occupies 32...
Why XML-Serializable class need a parameterless constructor
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answered Nov 6 '08 at 5:37
cfedukecfeduke
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Find the extension of a filename in Ruby
...gt; accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? File.extname("example.pdf")
=> true
irb(main):005:0> accepted_formats.include? File.extname("example.txt...
Locate the nginx.conf file my nginx is actually using
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answered Nov 11 '13 at 15:38
Daniel LiDaniel Li
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What is the difference between t.belongs_to and t.references in rails?
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answered Oct 17 '11 at 14:34
muffinistamuffinista
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Django set default form values
...alue when calling form constructor:
form = JournalForm(initial={'tank': 123})
or set the value in the form definition:
tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)
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