I've been hearing plans for this my entire life. I suspect I'll be dead before anything like this actually happens. But we'll crank out a few more thick binders of high speed rail studies.
urbanists.social/@straphanger/…
urbanists.social/@straphanger/…
𝚃𝚊𝚛𝚊𝚜 𝙶𝚛𝚎𝚜𝚌𝚘𝚎 🚇 (@straphanger@urbanists.social)
Attached: 1 image BREAKING: #Canada's government is going ahead with high-speed—not just high-frequency—rail between #Quebec City and #Toronto Bullet trains will reach speeds of up to 300 kilometres (186 mph) per hour.Urbanists.Social
![panel 1: quitting a terminal program isn't always easy
person (thinking): "I pressed Ctrl-C 17 times and NOTHING HAPPENED"
panel 2: ways to quit
Ctrl-C - the default
Ctrl-D - if you're at a prompt in a REPL >>>
q - if it's a full screen program
Ctrl-\ - sometimes works if Ctrl-C doesn't
kill -9 - the last resort
panel 3: how Ctrl-D works
programs that read input will usually have some code like this:
text = read_line()
if (text == EOF) {
exit()
}
Ctrl-D is how you send an EOF to the program ("I'm done!")
important: Ctrl-D ONLY works if you press it on an empty line
panel 4: how Ctrl-C works *
* unless your program is in "raw mode", we'll talk about that later
person: "ctrl-C"
terminal emulator: "ok, C is the 3rd letter of the alphabet, I'll write 3 to the tty"
OS terminal driver: ah, a 3, that means I should send the SIGINT signal to the current program
program: ooh, a SIGINT, I will [shutdown gracefully, immediately exit, ignore it, stop a subtask, etc]
* unless your program is in "raw mode", we'll talk about that later
panel 5: some programs have weird quitting incantations
for example every text editor (vim, nano, emacs, etc) has its own completely unique way to quit](https://fedi.ml/photo/preview/640/605679 "panel 1: quitting a terminal program isn't always easy
person (thinking): \"I pressed Ctrl-C 17 times and NOTHING HAPPENED\"
panel 2: ways to quit
Ctrl-C - the default
Ctrl-D - if you're at a prompt in a REPL >>>
q - if it's a full screen program
Ctrl-\ - sometimes works if Ctrl-C doesn't
kill -9 - the last resort
panel 3: how Ctrl-D works
programs that read input will usually have some code like this:
text = read_line()
if (text == EOF) {
exit()
}
Ctrl-D is how you send an EOF to the program (\"I'm done!\")
important: Ctrl-D ONLY works if you press it on an empty line
panel 4: how Ctrl-C works *
* unless your program is in \"raw mode\", we'll talk about that later
person: \"ctrl-C\"
terminal emulator: \"ok, C is the 3rd letter of the alphabet, I'll write 3 to the tty\"
OS terminal driver: ah, a 3, that means I should send the SIGINT signal to the current program
program: ooh, a SIGINT, I will [shutdown gracefully, immediately exit, ignore it, stop a subtask, etc]
* unless your program is in \"raw mode\", we'll talk about that later
panel 5: some programs have weird quitting incantations
for example every text editor (vim, nano, emacs, etc) has its own completely unique way to quit")
Majnūn 🇺🇦
in reply to Molly White • • •Hubert Figuière
in reply to Majnūn 🇺🇦 • • •Juan Pablo Queiroz 🐀
in reply to Molly White • • •Hubert Figuière
in reply to Juan Pablo Queiroz 🐀 • • •