On 28/01/2014, at 7:46 AM, srean wrote:
> I really like the idea that it is so convenient to partition an interval with
> out +1 -1 noise
>
> [a, b) = [a, c) Union [c, b)
>
> I dont have to do worry with
>
> [a, c] [c+1 b] and make sure the empty intervals are appropriately special
> cased etc.
>
> The dangerous situation is when a > b.
Sure, so lets have a coherent design proposal :)
Unbalanced brackets are out: too many tools would die.
Maybe \[1,42\) would work .. might confuse MathJax though.
[MathJax uses \( and \) for embedding math]
A useful option might be:
for var i in TYPE do ..
for example
for var i in [20] do ..
where 20 is NOT an integer but a type. Then i has type 20 and
ranges through case 0 of 20 to case 19 of 20, and
for var i in [char] do ..
ranges through all chars. We would also have
for var i in 20 do ..
which ranges through 0 to 19 inclusive. I still don't get a good feeling
with these though .. hmmm ..
The current general form is:
for i in iterator do ...
and
for i in datastructure do
where data structure has an iterator method. A bit more general:
match (?x,?y) in datastructure do
where the match argument is an arbitrary pattern. Only supports one case tho ;(
--
john skaller
[email protected]
http://felix-lang.org
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