Anton Maminov (@mamantoha@ruby.social) 13 Posts, 48 Following, 18 Followers · Linux guy, Ruby developer, Crystal enthusiast. #StandWithUkraine 🇺🇦

Nice read! @mamantoha published a short and nice ✍️ blog post about 🚥 #semaphores in :crystal: #crystal at @thepracticaldev:

https://dev.to/mamantoha/semaphores-in-crystal-5eha

#CrystalLang #CrystalLanguage #concurrency #waitgroup #mutex #parallel #paralellism #concurrency #programming

A rural scene in Whittlesey, Cambridgeshire. A class 755 'FLIRT' unit is passing the signalbox and semaphore signals which will all soon disappear with the resignalling being done this month.

#SignalboxSunday Whittlesea box, in the town of Whittlesey, near Peterborough. This section is being resignalled very soon so this scene will change forever. Greater Anglia #FLIRT 755419 passes through working 2E74 09.58 Ipswich to Peterborough. #StadlerSunday #Semaphores 15/3/25

Summer Saturday Sand In glorious summer sun, 66171 runs through Par with 6C12 – 10:57 Burngullow E.C.C. – Exeter Riverside N.Y. sand train on Saturday 22nd June 2019.

My shot from 2019, when Par had semaphore signals and sand trains ran on Summer Saturdays.
#semaphores
#trains
#Class66
#Par
#Cornwall

flic.kr/p/2gimuQS