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Tacit functions apply to implicit arguments. This is in contrast to the explicit use of arguments in [[ | Tacit functions apply to implicit arguments. This is in contrast to the explicit use of arguments in [[dfn]]s (<source inline lang=apl>⍺ ⍵</source>) and [[tradfn]]s (which have named arguments). Some APL dialects allow to combine functions into '''trains''' following a small set of rules. This allows creating complex derived functions without specifying any arguments explicitly. | ||
Known dialects which implement trains are [[Dyalog APL]], [[dzaima/APL]], [[ngn/apl]] and [[NARS2000]]. | Known dialects which implement trains are [[Dyalog APL]], [[dzaima/APL]], [[ngn/apl]] and [[NARS2000]]. |