google / go-jsonnet / 747

78%

master: 68%

Pull #343

travis-ci

feat: Improve performance of substr by 4.6x

This pulls in the implementation of substr into native Go instead of interpretted Jsonnet.

`go test -bench=Builtin -run=^$ -v -benchtime=10s`

Before:
Benchmark_Builtin_substr-16           62         190301037 ns/op

After:
Benchmark_Builtin_substr-16          280          40844970 ns/op

part of #111

40 of 40 new or added lines in 1 file covered. (100.0%)

4687 of 6047 relevant lines covered (77.51%)

5990.8 hits per line