Use lambdas and pack expansion to reduce template instantiations in action_dispatch

2 jobs for improved-action-dispatch in 193 minutes and 16 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Test
passed #4834
amd64
job_clang_amd64

03:13:14

passed #4833
amd64
job_gcc_amd64

02:30:42