juliayield

How to write a simple function in Julia similar to a function with yield keyword in python

I have a very simple function to illustrate yield keyword in python:

def simpleFun():
    yield 1 
    yield 2 
    yield 3 
x=simpleFun() 
print(x.next()) 
print(x.next()) 
print(x.next())

which will output

1
2
3

How to write an equivalent function in Julia.

I have seen the 'yield' keyword is used in a different context in Julia. Ref : What does the “yield” keyword do in Julia?

Solution

  • Here is a way that follows the style of the Python code:

    julia> using ResumableFunctions

julia> @resumable function simplefunction()
           @yield 1
           @yield 2
           @yield 3
       end
simplefunction (generic function with 1 method)

julia> x = simplefunction()
var"##simplefunction_FSMI#293"(0x00)

julia> print(x())
1
julia> print(x())
2
julia> print(x())
3