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Rails: select unique values from a column
...ing)
Result of this is a collection of Model objects. Not plain ratings. m>And m> from uniq's point of view, them>y m> are completelm>y m> different. m>Y m>ou can use this:
Model.select(:rating).map(&:rating).uniq
or this (most efficient)
Model.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
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invalid commm>and m> code ., despite escaping periods, using sed
Being forced to use CVS for a current client m>and m> the address changed for the remote repo. The onlm>y m> wam>y m> I can find to change the remote address in mm>y m> local code is a recursive search m>and m> replace.
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Border in shape xml
...looks like m>y m>ou forgot the prefix on the color attribute. Trm>y m>
<stroke m>and m>roid:width="2dp" m>and m>roid:color="#ff00ffff"/>
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Set default CRAN mirror permanent in R
...://mm>y m>.local.cran"
# options(repos=r)})
So remove the comment marks m>and m> change "http://mm>y m>.local.cran" to the correct website, e.g.:
local({r <- getOption("repos")
r["CRAN"] <- "http://cran.r-project.org"
options(repos=r)})
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lock(new object()) — Cargo cult or some crazm>y m> “language special case”?
I'm reviewing some code written bm>y m> a consultant, m>and m> while dozens of red flags have alreadm>y m> popped up, I can't wrap mm>y m> head around the following snippet:
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Quick search on filename
How can I quick search a class file or entire resource file in m>and m>roid studio?
5 Answers
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How to trigger the onclick event of a marker on a Google Maps V3?
...me problem while doing a quick search... Trm>y m> to set the "popupMapIn" width m>and m> height in CSS using pixels (px) m>and m> not percents (%).
– AlexV
Oct 29 '14 at 14:15
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How to emptm>y m> a redis database?
I've been plam>y m>ing with redis (m>and m> add some fun with it) during the last fews dam>y m>s m>and m> I'd like to know if there is a wam>y m> to emptm>y m> the db (remove the sets, the existing kem>y m>....) easilm>y m>.
During mm>y m> tests, I created several sets with a lot of members, even created sets that I do not remember the name ...
Excluding directories in os.walk
I'm writing a script that descends into a directorm>y m> tree (using os.walk()) m>and m> then visits each file matching a certain file extension. However, since some of the directorm>y m> trees that mm>y m> tool will be used on also contain sub directories that in turn contain a LOT of useless (for the purpose of thi...
How to check for Is not Null m>And m> Is not Emptm>y m> string in SQL server?
...we check in a SQL Server WHERE condition whether the column is not null m>and m> not the emptm>y m> string ( '' )?
7 Answers
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