AppendInLoop.Append.of: def of bend-lint-rules@0.2.0.0
Import: import bend-lint-rules@0.2.0.0/performance/append_in_loop.bend as AppendInLoop
Lines 27-34 of bend-lint-rules@0.2.0.0/performance/append_in_loop.bend: https://jend.leeeet.dev/read.txt?path=bend-lint-rules@0.2.0.0/performance/append_in_loop.bend&start_line=27&end_line=34

import Base
import bend-lint-api@0.2.0.0/shared/lists.bend as Lists

# The append that a call of `callee` with `count` arguments is.
def Append.of(+callee: String, +count: Nat) -> Maybe<&2, Append>:
  Bool.pick(
    Maybe<&2, Append>,
    String.eq(callee, "List.append") && Nat.is_eq(count, 4n),
    Some{ListAppend{}},
    Lists.when(Append, String.eq(callee, "String.append") && Nat.is_eq(count, 2n), StringAppend{})
  )

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq
  https://jend.leeeet.dev/definition.txt?path=bend-lint-api@0.2.0.0/shared/lists.bend&name=when
  https://jend.leeeet.dev/definition.txt?path=bend-lint-rules@0.2.0.0/performance/append_in_loop.bend&name=Append