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Improve StreamWriter format perf #19235

Merged
merged 2 commits into from Aug 6, 2018
Merged

Improve StreamWriter format perf #19235

merged 2 commits into from Aug 6, 2018

Commits on Aug 2, 2018

  1. Improve StreamWriter format perf 

    Override the format overloads for TextWriter and skip the extra string allocation for the formatted string by using StringBuilder directly, copying straight to the output buffer.

Improves performance roughtly 10% and cuts allocations by 10x and up (formatting a string into a string goes to *zero* allocations).
    @JeremyKuhne
    JeremyKuhne committed Aug 2, 2018
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    627eb97 View commit details
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  2. Fix copy/paste slipup- test added to CoreFX PR

    @JeremyKuhne
    JeremyKuhne committed Aug 2, 2018
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    9286970 View commit details
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