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There is GNU APL which is a decent 100% free APL, for anyone who wants to try it out. The Emacs mode for it allows you to pop up a keyboard with the symbols; as
by shrubble 4y ago
There is GNU APL which is a decent 100% free APL, for anyone who wants to try it out. The Emacs mode for it allows you to pop up a keyboard with the symbols; as well, there is a "." mode, where for instance .i becomes the iota operator.