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Add ideas for questions here, and we'll answer them and incorporate the answers into the FAQ.
Q: How are hashes implemented in Factor? Generically, how can hashes be implemented efficiently within a language where the principle data structure is a stack?
I've added an answer to Develop.
Q: how do I inspect the source code of a word?
Q: If I were going to create a series of vocabularies based around text, is there hierarchy support? e.g. text.lorem, text.leetspeak, text.balanced
or should they have just underscores in their name? textlorem
A: there's hierarchy support. USE: foo.bar
loads foo/bar/bar.factor
Q: Say I have '5' on the stack, and I want to create a sequence { 1 x 3 } and place 5 where the x is, what's the best way to do this?
slava: 5 1 swap 3 3array
slava: or 5 :> x { 1 x 3 }
slava: prunedtree would suggest something like 5 1array { 1 } { 3 } surround [ ] map
Q: I keep USE:ing source files from the listener but when I play with them in the listener, they do not have the search paths that the source file loaded!
A:
the only way to change the listener's search path is by entering USING:, USE:, etc in the listener
the first time, USE: will load the vocabulary, but any USE: or USING: in the source file that gets loaded will not affect the listener
slava: methods don't belong to a vocabulary
slava: methods belong to a generic word
slava: to invoke a generic word, you have to have the generic word's vocabulary in your search path
metaperl: I think that might trip up a lot of people
slava: well, its how java import statements owrk
slava: it only affects the source file being parsed
slava: I guess python and ruby just stick everything in one global namespace
slava: so you load a source file which loads another source file and suddently you've got 30 new identifiers in the global scope, some of which clash with your existing ones :)
Q: I keep killing the listener and restarting to make sure all my definitions get refreshed. Is there a simpler way?
A: if you just want to reload the source file, do refresh-all in the listener
you don't have to restart it
This revision created on Wed, 24 Feb 2010 05:25:56 by metaperl