Module clippy_utils::eager_or_lazy

Utilities for evaluating whether eagerly evaluated expressions can be made lazy and vice versa.

Things to consider:

• does the expression have side-effects?
• is the expression computationally expensive?

See lints:

• unnecessary-lazy-evaluations
• or-fun-call
• option-if-let-else

Enums

• EagernessSuggestion 🔒

Functions

• expr_eagerness 🔒
• fn_eagerness 🔒
  Determine the eagerness of the given function call.
• res_has_significant_drop 🔒
• switch_to_eager_eval
  Whether the given expression should be changed to evaluate eagerly
• switch_to_lazy_eval
  Whether the given expression should be changed to evaluate lazily