Friday, February 6, 2015
On Friday, February 6, 2015 at 12:21:09 PM UTC, Ruby-Forum.com User wrote:
can u help me understand this code
<a class='filter'
href='/blog?month=" + monthname[0..-6] + "&year=" + monthname[3..8] +
"'>" + date_value + "</a>
the numbers and all
This is the String#[] method http://www.ruby-doc.org/core-2.2.0/String.html#method-i-5B-5D
monthname[0..-6] returns the string from the first character until the one 6 from the end (negative indexes count from the end of strings)
monthname[3..8] returns from index 3 (i.e. the 4th character) until the one at index 8
So if your string is "06 2015" then monthname[0..-6] is "06" and monthname[3..8] returns "2015" (given the length of the string monthname[3..6] would return the same string)
Using strings that have to be torn apart like this does seem a little bit obtuse though.
Fred
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