Function rustc_typeck::middle::ty::expr_ty_optExperimental
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pub fn expr_ty_opt(cx: &ctxt<'tcx>, expr: &Expr) -> Option<&'tcx TyS<'tcx>>
pub fn expr_ty_opt(cx: &ctxt<'tcx>, expr: &Expr) -> Option<&'tcx TyS<'tcx>>
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct, enum,
trait, typedef (or
tdef).