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highlight.php
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crystal
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class Person def initialize(@name : String) end def greet puts "Hi, I'm #{@name}" end end class Employee < Person end employee = Employee.new "John" employee.greet # => "Hi, I'm John" employee.is_a?(Person) # => true @[Link("m")] lib C # In C: double cos(double x) fun cos(value : Float64) : Float64 end C.cos(1.5_f64) # => 0.0707372 s = uninitialized String s = <<-'STR' \hello\world \hello\world STR