Michael Tsai
Opened a 4.5 MB CSV file in Numbers in 58 seconds on rMBP. Do a search, it beachballs for 20 seconds. Excel opens it in 1 second.
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@mjtsai the dangers of promoting all data to NSObjects. Mail.app learned the same lesson long ago. C++ has its place.
rentzsch
David Smith
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@Catfish_Man@rentzsch OK, I took a quick sample. Almost all the loading time is spent parsing strings into dates as it creates cells. -
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@Catfish_Man Will do; thanks. Seems like this is something they could fix without a major redesign.
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@Catfish_Man@rentzsch And almost all the time spent searching is in CFDateFormatterCreate. Wow. -
@mjtsai,@Catfish_Man,@rentzsch — Lololol I think it’s a common improvement to reuse date formatters ‘cause alloc’ing is so expensive. -
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@Catfish_Man@rentzsch@mjtsai I would more likely presume locality of reference.
Simone Manganelli
Kyle S.
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