How do i elegantly reference return values in multiple-return-value-functions in Lua?

Question

say i have a function:

function func()
    return 1, 2, 3
end

Is there a way to elegantly reference individual return values? such as

if func() == 1 then
  print("stuff")
end

but instead reference the second or third returned value?

i realize you can do this

if ({func()})[2] == 2 then ...

but it just looks awful, and might as well just

_,v = func()
if v == 2 then ...

i'd like to do something like this

if func() == _,2 then ...

Jasmijn · Accepted Answer · 2019-01-03 20:20:45Z

4

That would be select:

if select(2, func()) == 2 then ... end

print(select(1, func()) -- prints 1 2 3
print(select(2, func()) -- prints 2 3
print(select(3, func()) -- prints 3
print(select('#', func()) -- prints 3, the total number of arguments received

answered Jan 3, 2019 at 20:20

Jasmijn

10.7k2 gold badges33 silver badges49 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How do i elegantly reference return values in multiple-return-value-functions in Lua?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related