Gavin Schulz
9e20b3935a
Add `join` and `join(sep)` methods to the `Sequence` class, allowing any sequence to produce a concatenated string of its elements with an optional separator. Refactor `List.toString` to delegate to `join(", ")` with bracket wrapping, removing the manual iteration logic from List. Include new test files for List, Range, and String join behavior, plus runtime error tests for non-string separators.
5 lines
88 B
Plaintext
5 lines
88 B
Plaintext
var a = 1..3
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IO.print(a.join) // expect: 123
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IO.print(a.join(", ")) // expect: 1, 2, 3
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