I am trying to prove that you can store subroutines inside a variable (unless you can't). Any chance that I just have this code all wrong?
I have this code from Python that does what I want to do
def printSample(str)
puts str
end
x = printSample
str = "Hello"
x(str)
expected output:
Hello
I am a beginner in Ruby and just trying to learn basic codes.
Example for handling an instance method:
class Demo
def initialize(s); @s = s; end
def printSample(str); puts(@s+str); end
end
x = Demo.instance_method(:printSample)
# x is now of class UnboundMethod
aDemo = Demo.new("Hi")
# Use x
x.bind(aDemo).call("You") # Outputs: HiYou
In this example, we first stored the method, and then applied it to an instance. If you have the instance first and want to fetch the method later, it is even simpler. Assuming the class definition of Demo from above, you can equally well do a
aDemo = Demo.new("Hi")
y = aDemo.method(:printSample)
y.call("You")