bjoernager/rust
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Rollup merge of #82456 - klensy:or-else, r=estebank

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Replaced some unwrap_or and map_or with lazy variants

Replaced some `unwrap_or` and `map_or` with `unwrap_or_else` and `map_or_else`.
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Guillaume Gomez 2021-02-26 15:52:31 +01:00 • committed by GitHub
commit 039b1b62ac
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17 changed files with 34 additions and 28 deletions
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2
compiler/rustc_parse/src/parser/diagnostics.rs
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@ -223,7 +223,7 @@ impl<'a> Parser<'a> {
fn tokens_to_string(tokens: &[TokenType]) -> String {
let mut i = tokens.iter();
// This might be a sign we need a connect method on `Iterator`.
let b = i.next().map_or(String::new(), |t| t.to_string());
let b = i.next().map_or_else(String::new, |t| t.to_string());
i.enumerate().fold(b, |mut b, (i, a)| {
if tokens.len() > 2 && i == tokens.len() - 2 {
b.push_str(", or ");