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mapnik::value leveraging utree #833

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artemp opened this Issue · 2 comments

2 participants

@artemp
Owner

With boost 1.47 (spirit 2.5) utree if officially part of a boost release.

Artem and I have discussed refactoring mapnik::value to move from variant to utree for performance gains: smaller, faster value access and potentially support for nested attributes. Might have implications for what is possible with expressions - also Carto C++ is already leveraging utree.

http://www.boost.org/doc/libs/1_47_0/libs/spirit/doc/html/spirit/what_s_new/spirit_2_5.html

http://www.boost.org/doc/libs/1_47_0/libs/spirit/doc/html/spirit/support/utree.html

@springmeyer
Owner

not actionable, closing.

@springmeyer
Owner

future work should likely center around http://boost-spirit.com/home/2013/02/23/spirit-x3/ and https://github.com/djowel/spirit_x3 from @djowel. We can create new tickets that capture this when we move on it

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