Conformability: Difference between revisions

== Frame conformability ==

The [[Rank operator]] and [[function rank]] check for conformability not on the entire [[shape]]s of arguments, but only on their [[frame]]s. The same procedure applies to determine whether two frames conform, and if function <syntaxhighlight lang=apl inline>f</syntaxhighlight>'s result shape is known, then the result shape of <syntaxhighlight lang=apl inline>f⍤l r</syntaxhighlight> can be found by appending it to the shape obtained from conformability on the frames computed from [[Rank (operator)|ranks]] <syntaxhighlight lang=apl inline>l</syntaxhighlight> and <syntaxhighlight lang=apl inline>r</syntaxhighlight>. Rather than copying [[element]]s of the extended argument to match the other one, [[cell]]s are copied.