go-hep.org/x/hep@v0.38.1/fwk/examples (about) fwk-ex-tuto-1 fwk-ex-tuto-2 fwk-ex-tuto-3 fwk-ex-tuto-4-write-histo fwk-ex-tuto-5-read-histo fwk-ex-tuto-6-write-data fwk-ex-tuto-7-read-data