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Ruby: extend self
... will be:
module Rake
include Test::Unit::Assertions
def run_tests # etc.
end
end
Rake.extend(Rake)
This can be used to define self contained modules with private methods.
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Insert ellipsis (…) into HTML tag if content too wide
... of the text; then 75% of the text if 50% fits, or 25% if 50% doesn't fit, etc.
– StanleyH
Feb 1 '11 at 10:07
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How can I restart a Java application?
...al File currentJar = new File(MyClassInTheJar.class.getProtectionDomain().getCodeSource().getLocation().toURI());
/* is it a jar file? */
if(!currentJar.getName().endsWith(".jar"))
return;
/* Build command: java -jar application.jar */
final ArrayList<String> command = new ArrayL...
PostgreSQL disable more output
...does have the advantage that you don't have to remember psql option names, etc.
psql ... | cat
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Regular expression search replace in Sublime Text 2
...segments won't be accessible to defined variables such as $1, $2 or \1, \2 etc.
For example we want to replace 'em' with 'px' but preserve the digit values:
margin: 10em; /* Expected: margin: 10px */
margin: 2em; /* Expected: margin: 2px */
Replacement string: margin: $1px or margin:...
Get records with max value for each group of grouped SQL results
...the value for.
You avoid complicated subqueries that try to find the max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL ...
REST Complex/Composite/Nested Resources [closed]
...sources. Posting a binary/file parameter which results in a URL isn't a stretch.
When you get the form for a new resource (/comic-books/new), or get the form to edit a resource (/comic-books/0/edit), you are asking for a forms-specific representation of the resource. If you post it to the resource ...
Hidden Features of Xcode
...ode
This trick works in all Cocoa application on the Mac (TextEdit, Mail, etc.) and is possibly one of the most useful things to know.
Command ⌘ Left Arrow or Command ⌘ Right Arrow Takes you to the beginning and end of a line.
Control ^ a and Control ^ e Do the same thing
Control ^ n...
Is there a good reason to use upper case for SQL keywords? [closed]
...ated somewhere in 90s) all tablenames, columns, indexes, stored procedures etc. are all capitalised, hence we go for lowercase SQL keywords. ;)
– Andreas
Nov 25 '15 at 12:23
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C++ Double Address Operator? (&&)
...d::move. Showing what would happen with int&& c = std::move( b );, etc.
– Zzzach...
Jul 24 '19 at 21:00
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