2DUP - [:core:]

2DUP - [:core:]
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Name

two-dup:core — ordinary primitive

FORTH

2DUP ( a,a -- a,a a,a )();
p4:"two-dup";

double-cell duplication, also used to duplicate two items

 simulate:
   : 2DUP OVER OVER ; ( wrong would be : 2DUP DUP DUP ; !!)

dpANS .6.1.0380 - standard forth word