Now that the wonderful SQL interface is working for me, I
believe I can create a component and keyed file system in
straight APL easily. I just need to understand ⎕TF a bit
1. 3 ⎕TF seems to produce a string vector representation
of an arbitrary nested array without retaining the specific
name of the variable. Is this true? (If so, this is exactly
what I need!)
2. How can I reverse the process? i.e. if X holds the
result of a 3 ⎕TF, I need a way of converting it back to an
APL (possibly nested) array that is exactly the same array.
x←(5 5⍴⍳25) 'Hello there'
I need to know what ?????? is so that x and z have the
exactly equivalent arrays.
3. I am a little concerned that the vector produced by 3 ⎕TF
may have trouble going to and from an SQL VARCHAR using the
existing (and fantastic!) library. I am not sure, but there
may be a problem with C null characters ('\0') or other
non-printable characters. Some feedback on this would be very
I suppose I can achieve the same effect by using 2⎕TF and
then dropping the assignment part before executing the string.
This should be highly portable but I'd guess less efficient.
Thanks a lot!!