31 lines
857 B
Rust
31 lines
857 B
Rust
/// Lovingly borrowed from the cargo crate
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///
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/// Joins an iterator of [std::fmt::Display]'ables into an output writable
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pub(crate) fn iter_join_onto<W, I, T>(mut w: W, iter: I, delim: &str) -> std::fmt::Result
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where
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W: std::fmt::Write,
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I: IntoIterator<Item = T>,
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T: std::fmt::Display,
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{
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let mut it = iter.into_iter().peekable();
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while let Some(n) = it.next() {
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write!(w, "{}", n)?;
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if it.peek().is_some() {
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write!(w, "{}", delim)?;
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}
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}
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Ok(())
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}
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/// Lovingly borrowed from the cargo crate
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///
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/// Joins an iterator of [std::fmt::Display]'ables to a new [std::string::String].
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pub(crate) fn iter_join<I, T>(iter: I, delim: &str) -> String
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where
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I: IntoIterator<Item = T>,
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T: std::fmt::Display,
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{
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let mut s = String::new();
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let _ = iter_join_onto(&mut s, iter, delim);
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s
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}
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