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Ruby makes heavy use of blocks in the built in types and the standard library. In this video, we explore Strings and Integers.
Documentation Links
Code Samples
String#each_char:
string = "Treehouse"
string.each_char{|c| print "#{c}-"}
This prints out:
"T-r-e-e-h-o-u-s-e"
String#each_line:
haiku = <<-EOF
A string with three lines
Is considered multi line
Ruby code haiku
EOF
haiku.each_line{ |line| puts "* #{line}" }
Prints the following:
* A string with three lines
* Is considered multi line
* Ruby code haiku
Integer#down_to:
5.downto(3) { |number| print number }
Prints out the following:
543
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