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MySQL IF NOT NULL, then display 1, else display 0
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214
Instead of COALESCE(a.addressid,0) AS addressexists, use CASE:
CASE WHEN a.addressid IS NOT NU...
Why use symbols as hash keys in Ruby?
...hed keys" against each other.
Long answer:
https://web.archive.org/web/20180709094450/http://www.reactive.io/tips/2009/01/11/the-difference-between-ruby-symbols-and-strings
http://www.randomhacks.net.s3-website-us-east-1.amazonaws.com/2007/01/20/13-ways-of-looking-at-a-ruby-symbol/
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When to use , tag files, composite components and/or custom components?
...g <ui:include> and other templating techniques offered by Facelets 1.x.
1 Answer
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How to store arrays in MySQL?
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167
The proper way to do this is to use multiple tables and JOIN them in your queries.
For exampl...
How to check if a string is a valid hex color representation?
...d support for 3-character HEX codes, use the following:
/^#([0-9A-F]{3}){1,2}$/i.test('#ABC')
The only difference here is that
[0-9A-F]{6}
is replaced with
([0-9A-F]{3}){1,2}
This means that instead of matching exactly 6 characters, it will match exactly 3 characters, but 1 or 2 times. Al...
Using custom std::set comparator
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162
You are using a function where as you should use a functor (a class that overloads the () oper...
Setting JDK in Eclipse
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146
You manage the list of available compilers in the Window -> Preferences -> Java -> In...
Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli
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241
An example to help you get off the ground.
for f in *.jpg; do mv "$f" "$(echo "$f" | sed s/IMG/V...
Reading binary file and looping over each byte
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How to “pretty” format JSON output in Ruby on Rails
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18 Answers
18
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