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feat: Add slice append #2241

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merged 1 commit into from
Aug 9, 2023
Merged

feat: Add slice append #2241

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5 changes: 5 additions & 0 deletions crates/nargo_cli/tests/execution_success/slices/src/main.nr
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,11 @@ fn main(x : Field, y : pub Field) {
assert(remove_slice[3] == 3);
assert(remove_slice.len() == 4);

let append = [1, 2].append([3, 4, 5]);
assert(append.len() == 5);
assert(append[0] == 1);
assert(append[4] == 5);

regression_2083();
}

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10 changes: 9 additions & 1 deletion noir_stdlib/src/slice.nr
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Expand Up @@ -32,5 +32,13 @@ impl<T> [T] {
/// the removed element
#[builtin(slice_remove)]
fn remove(_self: Self, _index: Field) -> (Self, T) { }
}

// Append each element of the `other` slice to the end of `self`.
// This returns a new slice and leaves both input slices unchanged.
fn append(mut self, other: Self) -> Self {
for elem in other {
self = self.push_back(elem);
}
self
}
}