pub fn fn_def_id(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<DefId>Expand description
Returns the DefId of the callee if the given expression is a function or method call.
pub fn fn_def_id(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<DefId>Returns the DefId of the callee if the given expression is a function or method call.