---
blurb: 'Create a sentence of the form "One for X, one for me."'
source: "This is an exercise to introduce users to basic programming constructs, just after Hello World."
source_url: "https://en.wikipedia.org/wiki/Two-fer"

---
blurb: 'Create a sentence of the form "One for X, one for me."'
source_url: "https://en.wikipedia.org/wiki/Two-fer"

Remove assumption about track ordering
two-fer: Remove assumption about track ordering

The exercise was originally made to have the same format as the old hello-world exercise:
provide a default value if none is passed, and use the passed argument when present.

This let us simplify hello-world so that it is a simple check to ensure that everything is
wired together correctly.

That said, there are languages where implementing this is non-trivial, so while we did make the
exercise to replace the old hello-world, it doesn't necessarily follow that it would always
directly follow a hello-world exercise.
