Provide addititve identity when taking the sum #82
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Commit 444e816 introduced a bug whereby `$.()` causes the program to crash because it tries to take the sum of a zero-length list without providing the additive identity.
urkerab
commented
Apr 16, 2023
| @@ -21,7 +21,7 @@ public override string GetString(string input, List<MatchContext> matches, List< | |||
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| public override BigInteger GetLength(string input, List<MatchContext> matches, List<MatchContext> separators, int index) | |||
| { | |||
| return Children.Select(c => c.GetLength(input, matches, separators, index)).Aggregate((cur, sum) => sum + cur); | |||
| return Children.Select(c => c.GetLength(input, matches, separators, index)).Aggregate(BigInteger.Zero, (cur, sum) => sum + cur); | |||
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Suggested change
| return Children.Select(c => c.GetLength(input, matches, separators, index)).Aggregate(BigInteger.Zero, (cur, sum) => sum + cur); | |
| return Children.Select(c => c.GetLength(input, matches, separators, index)).Aggregate(BigInteger.Zero, BigInteger.Add); |
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Commit 444e816 introduced a bug whereby
$.()causes the program to crash because it tries to take the sum of a zero-length list without providing the additive identity.