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Ran 18 Aug 2020 08:43PM UTC

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Committed 18 Aug 2020 08:16PM UTC coverage: 73.031% (+0.2%) from 72.782%

Job # PYTHONPATH=$PYTHONPATH:. RUN_TYPE=test

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push

travis-ci-com

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web-flow

Commit Message

perf(util_array.util2d): write_txt string += performance slow for large arrays (#964)

Writing large arrays (like JA in a disu file) using package_object.write_file() is
too slow (hours for a JA of size ~10M). Experimentation suggests the bottleneck is
in utils/util_array.py() in function array2string, which uses the string += "more"
and string = string + "more" methods, which scale badly with size.
Implement solution: Change string += loop to "".join(iterable) method.

Co-authored-by: Mike Taves <mwtoews@gmail.com>

Fixes #961

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