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How to sum array of numbers in Ruby?
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array.map(&:to_i).reduce(0, :+)
Some additional relevant reading:
http://ruby-doc.org/core-1.9.3/Enumerable.html#method-i-inject
http://en.wikipedia.org/wiki/MapReduce
http://en.wikipedia.org/wiki/Fold_(higher-order_function)
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What methods of ‘clearfix’ can I use?
...hen positioned content will not show outside the bounds of the container.
http://www.quirksmode.org/css/clearing.html
- explains how to resolve common issues related to this technique, namely, setting width: 100% on the container.
.container {
overflow: hidden;
display: inline-block;
display...
How to make a div grow in height while having floats inside
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There's more than one way to clear floats. You can check some here:
http://work.arounds.org/issue/3/clearing-floats/
E.g., clear:both might work for you
#element:after {
content:"";
clear:both;
display:block;
}
#element { zoom:1; }
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Can an array be top-level JSON-text?
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yes, try it out here.
http://www.jsonlint.com/
and put in [{}]
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How to increase IDE memory limit in IntelliJ IDEA on Mac?
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Here is a link to the latest documentation as of today http://www.jetbrains.com/idea/webhelp/increasing-memory-heap.html
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How can I convert a string to upper- or lower-case with XSLT?
...on="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:utils="urn:myExtension" exclude-result-prefixes="msxsl">
<xsl:output method="xml" indent="yes"/>
<msxsl:script imp...
++someVariable vs. someVariable++ in JavaScript
...to i before the addition and ++i does the addition before evaluating.
See http://jsfiddle.net/xaDC4/ for an example.
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Example for sync.WaitGroup correct?
...g(600, &wg)
wg.Wait()
fmt.Println("Done")
}
As a playground: http://play.golang.org/p/WZcprjpHa_
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Example invalid utf8 string?
...t Sequence (but not Unicode!)' => "\xfc\xa1\xa1\xa1\xa1\xa1",
);
From http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php#54805
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Catching all javascript unhandled exceptions
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Check out http://log4javascript.org it is based on Log4J. If most of your code is wrapped in try/catch statements to handle exceptions you can make use of this library as a common interface for sending output to an always available "di...