[strlen]

There's a corollary to the 90/10 rule: if solving a whole problem seems infeasible, try solving 80% of it instead.

[potatolicious]

The caution behind that corollary is: be aware of the difference between infeasible, impossible, and laziness.

There's a whole big market out there for people who can execute the full 100% while everyone else stops after the easy 90. Case in point: Apple.