Format: Difference between revisions

{{Built-in|Format|⍕}} is an [[ambivalent]] [[primitive function]] which formats the right [[argument]] into a [[simple]] [[character]] array, optionally following the specification supplied as the left argument. The usage of the left argument varies across implementations.

 

Format in its [[monadic]] form allows the user to convert [[Array model|arrays]] of any [[type]] into simple character arrays (for example for concatenation with other character arrays). The result usually matches the interpreter's default display, either by <source lang=apl inline>⎕←</source> or by REPL.

 

 

 

 

[[Dyalog APL]] and [[NARS2000]] support column width and the number of decimal places for formatting [[numeric]] arrays. The following example formats the 2-by-3 array with 12 spaces per column, rounded to 2 decimal places:

 

 

</source>{{Works in|[[Dyalog APL]], [[NARS2000]]}}

 

[[APLX]] supports '''Format by example''', which uses string left argument for a rich set of format specifications:

 

      '55.55 5.555 55.55 55'⍕22.234 1.398 0.00 11.0

      '555,555,555.55'⍕1234567.89

</source>{{Works in|[[APLX]]}}