Merge pull request #358 from chr1sj0nes/pylist_reverse
Add `PyList.reverse()`.
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commit
f248aaddbe
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@ -125,6 +125,11 @@ impl PyList {
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pub fn sort(&self) -> PyResult<()> {
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unsafe { err::error_on_minusone(self.py(), ffi::PyList_Sort(self.as_ptr())) }
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}
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/// Reverses the list in-place. Equivalent to python `l.reverse()`
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pub fn reverse(&self) -> PyResult<()> {
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unsafe { err::error_on_minusone(self.py(), ffi::PyList_Reverse(self.as_ptr())) }
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}
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}
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/// Used by `PyList::iter()`.
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@ -403,4 +408,21 @@ mod test {
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assert_eq!(5, list.get_item(2).extract::<i32>().unwrap());
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assert_eq!(7, list.get_item(3).extract::<i32>().unwrap());
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}
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#[test]
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fn test_reverse() {
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let gil = Python::acquire_gil();
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let py = gil.python();
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let v = vec![2, 3, 5, 7];
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let list = PyList::new(py, &v);
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assert_eq!(2, list.get_item(0).extract::<i32>().unwrap());
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assert_eq!(3, list.get_item(1).extract::<i32>().unwrap());
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assert_eq!(5, list.get_item(2).extract::<i32>().unwrap());
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assert_eq!(7, list.get_item(3).extract::<i32>().unwrap());
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list.reverse().unwrap();
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assert_eq!(7, list.get_item(0).extract::<i32>().unwrap());
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assert_eq!(5, list.get_item(1).extract::<i32>().unwrap());
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assert_eq!(3, list.get_item(2).extract::<i32>().unwrap());
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assert_eq!(2, list.get_item(3).extract::<i32>().unwrap());
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}
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}
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