vendor/petgraph/src/util.rs

   1
   2 use std::iter;
   3
   4 pub fn enumerate<I>(iterable: I) -> iter::Enumerate<I::IntoIter>
   5     where I: IntoIterator
   6 {
   7     iterable.into_iter().enumerate()
   8 }
   9
  10 #[cfg(feature = "serde-1")]
  11 pub fn rev<I>(iterable: I) -> iter::Rev<I::IntoIter>
  12     where I: IntoIterator,
  13           I::IntoIter: DoubleEndedIterator
  14 {
  15     iterable.into_iter().rev()
  16 }
  17
  18 pub fn zip<I, J>(i: I, j: J) -> iter::Zip<I::IntoIter, J::IntoIter>
  19     where I: IntoIterator,
  20           J: IntoIterator
  21 {
  22     i.into_iter().zip(j)
  23 }