=: is a global copula. =. is a local copula within explicit definitions. In immediate mode or not enclosed in an explicit definition is the same as =: . Need to be aware that if you use "load" that puts the script within an explicit definition. So =. produces a local definition that disappears when the "load" verb ends.
On Sun, Oct 30, 2011 at 2:37 PM, Andrew Pennebaker < [email protected]> wrote: > What's the difference between =: and =. ? > > Cheers, > > Andrew Pennebaker > www.yellosoft.us > > 2011/10/30 Björn Helgason <[email protected]> > > > happy=.0 > > > happy # <'clap hands' > > > > happy=.1 > > > happy # <'clap hands' > > clap hands > > > > > > 2011/10/30 Andrew Pennebaker <[email protected]> > > > > > J won't let me write if. ... end. by itself; it must be enclosed in a > > > function definition. E.g., I'd like to do this: > > > > > > if. happy do. > > > clapHands > > > end. > > > > > > Rather than: > > > > > > arewehappy =: monad : 0 > > > if. happy do. > > > clapHands > > > end. > > > ) > > > > > > arewehappy 0 > > > > > > Can we add the ability to do the former to J? > > > > > > By the way, what's the preferred notation for long variable and > function > > > names? camelCase? with_underscores? > > > > > > Cheers, > > > > > > Andrew Pennebaker > > > www.yellosoft.us > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > > > > > > -- > > Björn Helgason, Verkfræðingur > > Fornustekkum II > > 781 Hornafirði, > > t-póst: [email protected] > > gsm: +3546985532 > > twitter: @flugfiskur > > http://groups.google.com/group/J-Programming > > > > > > Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans > > > > góður kennari getur stigið á tær án þess að glansinn fari af skónum > > /|_ .-----------------------------------. > > ,' .\ / | Með léttri lund verður | > > ,--' _,' | Dagurinn í dag | > > / / | Enn betri en gærdagurinn | > > ( -. | `-----------------------------------' > > | ) | (\_ _/) > > (`-. '--.) (='.'=) ♖♘♗♕♔♙ > > `. )----' (")_(") ☃☠ > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
