30 lines
432 B
Text
30 lines
432 B
Text
|
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
|