Can't load iterator.slate

[Brian Rice]

On Nov 4, 2004, at 8:51 PM, Todd Fleming wrote:

> Brian Rice wrote:
>
>> Bonus points (I guess that means a free feature request granted) if 
>> someone remembers what infect: does. ;-)
>
> Woohoo! I remember because I saw infect explained while reading 
> through the archive over the past couple days. I hope this doesn't 
> count as cheating...
>
> container infect [] replaces each element with the result of applying 
> that element to the block.

Yep, and it works on sequences and dictionaries. Well, any Mapping (so 
tree structures that count as mappings can also use it).

> container infect [| :a | a + 1].  will increment each element, 
> assuming of course that the contents are all magnitudes.

Right.

> I am curious about something; why was this named infect? I suspect you 
> named it that way so you can write the following: HardDisk infect [| 
> :_ | Windows]. ;)

Actually, a certain Travis Griggs who is a Smalltalker came up with it, 
or someone he worked with at ParcPlace. It's pretty obviously about 
internal mutation, so... well, it makes sense to me. :-) Anyway we have 
a ton of such methods ending in -ect: so it helps if they are all 
mnemonic. (select: reject: collect: inject:into: project: ...)

--
Brian T. Rice
LOGOS Research and Development
http://tunes.org/~water/