Thank you Kacper for both your original reply and this clarification. My eyesight is not what it used to be… we persevere however.
respect… Peter On 2014-07-31, at 10:53 PM, Kacper Gutowski <mwgam...@gmail.com> wrote: > On 2014-07-31 22:49:06, Peter Teeson wrote: >> David used theta as well. Is that also an available symbol? >> i.e. a greek letter not otherwise used by the APL language? > > You're probably refering to ⍬. This is not a theta. This symbol > is called zilde and it should look like zero with superimposed > tilde. It's not specifically related to lambdas. > Zilde stands for a numeric vector of zero length (just like '' is > a character vector). You can write (0⍴0) instead of ⍬. > > > -k
