Up Arrow

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The glyph up arrow (or pike, in A Dictionary of APL) is an upwards pointing arrow represented by the Unicode character , "upwards arrow". The up arrow has several uses in various dialects:

  • In all dialects, <source lang=apl inline>↑</syntaxhighlight> is Take when used dyadically (except very early versions of APL\360, which used it for Rotate).
  • In SHARP APL, <source lang=apl inline>↑</syntaxhighlight> is Nub when monadic.
  • In APL2, NARS2000, GNU APL, and APLX, <source lang=apl inline>↑</syntaxhighlight> is First when monadic.
  • In Dyalog APL, dzaima/APL, and ngn/apl, <source lang=apl inline>↑</syntaxhighlight> is Mix when monadic.
  • In A+, <source lang=apl inline>↑</syntaxhighlight> is Signal, giving an error with the specified message, when monadic.


APL glyphs [edit]
Information GlyphTyping glyphs (on Linux) ∙ UnicodeFontsMnemonicsOverstrikesMigration level
Individual glyphs Jot () ∙ Right Shoe () ∙ Up Arrow () ∙ Zilde () ∙ High minus (¯) ∙ Dot (.) ∙ Del ()