introduce optional class
authortsteven4 <tsteven4@gmail.com>
Thu, 30 Aug 2018 16:36:07 +0000 (10:36 -0600)
committertsteven4 <tsteven4@gmail.com>
Thu, 30 Aug 2018 16:36:07 +0000 (10:36 -0600)
commitdfb2a4c45c081796848416f706f50fcc4d4c1a20
treeb548da2dad01677a2f4cefc2648e11bb7c5d1f29
parent9a007f15f57cc28b777c66171c10462fa3831faa
introduce optional class

for things that may or may not have a value.
demonstrate usage with computed_trkdata.
defs.h
gpssim.cc
gtrnctr.cc
kml.cc
reference/earth-expertgps-track.kml
reference/earth-expertgps.kml
reference/track/gpx_garmin_extensions-kml_track.kml
reference/track/tracks~gpx.kml
route.cc
src/core/optional.h [new file with mode: 0644]