17 lines
439 B
Rust
17 lines
439 B
Rust
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use crate::utils::span_lint_and_help;
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use rustc_hir as hir;
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use rustc_lint::LateContext;
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use super::SUSPICIOUS_MAP;
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pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>) {
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span_lint_and_help(
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cx,
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SUSPICIOUS_MAP,
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expr.span,
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"this call to `map()` won't have an effect on the call to `count()`",
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None,
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"make sure you did not confuse `map` with `filter` or `for_each`",
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);
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}
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