tree 8ca74373cac0fe52aced5f32cc6f6e1f9c3239b5
parent 56f1332113c3b8b1844c04683b9cb9dc5a0bd346
author Alex Light <allight@google.com> 1573771901 -0800
committer Treehugger Robot <treehugger-gerrit@google.com> 1573845443 +0000

Implement STL iterators on ObjectArray and add helpers

Iterating over an ObjectArray is rather cumbersome, requiring manual
for-loops. To improve ergonomics and STL standard-ness this implements
std::iterator's for ObjectArray and converts code to use this (in
simple situations). This should allow us to use standard STL functions
in the future when dealing with ObjectArrays.

Also adds some helpers such as ZipCount and ZipLeft.

Test: ./test.py --host
Change-Id: Ifd515b8321775424b3256a6faf47b2ba970177d3