Naming Conventions

Expected "=" to follow ";"

Expected "=" to follow ";" Naming Conventions
scalar		vector	matrix	any rank	non- scalar
boolean	`bs`	`bv`	`bm`	`ba`	`bn`
integer	`is`	`iv`	`im`	`ia`	`in`
float	`fs`	`fv`	`fm`	`fa`	`fn`
numeric	`ns`	`nv`	`nm`	`na`	`nn`
character	`cs`	`cv`	`cm`	`ca`	`cn`
enclosed vector	`es`	`ev`	`em`	`ea`	`en`
enclosed text vector	`ts`	`tv`	`tm`	`ta`	`tn`
simple	`ss`	`sv`	`sm`	`sa`	`sn`
any	`as`	`av`	`am`	`aa`	`an`
`b3`, `i4` &c. to specify higher ranks.

see GlossaryOfAplTerms for any of the above terms you don't understand.

Understanding Rank

If you are not exactly on old-hand in APL you might find the following remarks helpful:

A scalar; An array without any dimension has a rank of zero:

      ⍴⍴0
0
      ⍴⍴'a'
0
      ⍴⍴⊂'these' 'text' 'strings'
0

A vector; Has exactly one dimension:

      ⍴⍴,0
1
      ⍴⍴1 2 3
1
      ⍴⍴,'a'
1
      ⍴⍴'abc'
1
      ⍴⍴0 'one' 2 'three'
1

A matrix: An array with two dimensions:

      ⍴⍴2 3⍴4
2
      ⍴⍴2 2⍴'abcd'
2
      ⍴⍴'abc'∘.,0 1 2
2