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by alblue
3745 days ago
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One surprising performance issue with Swift was identified (and fixed) by IBM recently: https://github.com/apple/swift/commit/259d57bbe7784955108caa... The problem was that the print operations was being done character-by-character and it resulted in the printing being a significant overhead in the execution of the tests themselves. With this change they saw a speed up of many times simply because it was using buffered output. |
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