Release Notes
Added
parseInt and parseFloat — read a number out of text. Because the text
might not be a number, each hands back an Option — some(n) when it parsed,
none when it did not — the same shape you already match on, so bad input is
a value you handle rather than a crash.lux learn conversions — a new topic (in the safety lesson, next to
option) on the line between converting and parsing: a conversion is total, a
parse can fail, and folding the two together is where the crash hides.lux magic — spells for things you want to do now. Where lux learn is a
concept ladder, magic is task-indexed ("how do I read input?"): a small program
that already works, ending with a trail to the lux learn topics that explain
it. A spell is allowed to run ahead of where you've climbed the ladder — that's
the point — and the same spell reads as plain lux once its trail is walked. The
first three answer the question a player hits the moment they want their world
to listen: reading a line, reading a number (on the new parseInt), and a
read-a-command loop. Every spell is real lux the suite runs and translates.
Changed
int and float are now total conversions. They convert between numbers
and pass their own type through; they no longer parse strings. int("5") was
the one operation in lux that could fail by aborting the program — a quiet
contradiction of the no-hidden-failures rule the language teaches everywhere
else. That string case now errors with a trail pointing at parseInt /
parseFloat. (This also removes a latent bug in the Go backend, where
int(aString) had emitted invalid Go.)
Install lux 0.8.0
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/anderix/lux/releases/download/v0.8.0/lux-installer.sh | sh
Download lux 0.8.0
