IO is the class for basic input/output.
Static Methods
input()
Get a line from the standard input. The line may be truncated if it is too long. The line may end with a newline character.
def input = IO.input()See also: input(message)
input(message)
Print the message and get a line from the standard input. The line may be truncated if it is too long. The line may end with a newline character.
def input = IO.input("What is the answer?\n") #> What is the answer?See also: input()
print(obj)
Print obj to the standard output without a newline at the end. obj is converted to a string by calling the .to_s method.
IO.print(3 + 5) #> 8
IO.println()See also: println(obj)
println(obj)
Print obj to the standard output and a newline at the end. obj is converted to a string by calling the .to_s method.
IO.println([ 1, 'a' ]) #> [1, a]See also: println(), print(obj)
write(byte)
Write a byte (an Int between 0 and 255) to the standard output.
IO.write(0x40) # @
IO.write(0x0A) # \n
#> @