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- Subject: Some competition
- From: David Given <dg@...>
- Date: Thu, 4 Aug 2005 17:24:19 +0100
Someone's just pointed me at this:
It's a scripting language that seems to be aiming itself directly at Lua; the
author makes a number of comparisons. Prototype-based OO, syntax reminiscent
of Smalltalk with a healthy dollop of C and Occam built in. It's very small;
he claims fewer lines of code than Lua, and a memory footprint ranging from
64kB to 200kB depending on platform.
There are some very cool features, including intrinsic, stackless,
coroutine-based threads and built-in future support.
a := someObject
z := a someMethod # calls synchronously and returns result
z := a @someMethod # calls asynchronously, z is a future pointing at
# the result
z print # blocks until z contains a value
This allows you to do things like:
status1 := object1 @init
status2 := object2 @init
status3 := object3 @init
if (status1 | status2 | status3,
"One of the constructors failed!" print)
It definitely has a different philosophy to Lua. Io wants you to do things its
way (for example, it provides a scheduler and a class hierarchy), where Lua
provides a framework on which you can hang your own system. But there are
definitely features worth stealing; I really like its futures, for example.
I've only ever seen those in functional languages before.
+- David Given --McQ-+ "For is it not written, wheresoever two or three
| firstname.lastname@example.org | are gathered together, yea they will perform the
| (email@example.com) | Parrot Sketch?" --- _Not The 9 o'Clock News_
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