How to resolve the algorithm Named parameters step by step in the Bracmat programming language

Published on 12 May 2024 09:40 PM
#Bracmat

How to resolve the algorithm Named parameters step by step in the Bracmat programming language

Table of Contents

Problem Statement

Create a function which takes in a number of arguments which are specified by name rather than (necessarily) position, and show how to call the function. If the language supports reordering the arguments or optionally omitting some of them, note this. Note: See also:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Named parameters step by step in the Bracmat programming language

Source code in the bracmat programming language

( ( testproc
  =   i x y z
    .   out$"Calling testproc"
      & (=~):(=?i:?x:?y:?z)     { initialise variables to 'failure' }
      &   !arg
        : (? (i,?i) ?|?)        { if "i" found, assign value to i. Otherwise just match with no side effect. }
        : (? (x,?x) ?|?)        { if "x" found, assign value to x. Otherwise just match with no side effect. }
        : (? (y,?y) ?|?)        { likewise }
        : (? (z,?z) ?|?)        { likewise }
      & (~!i|put$("   i:=" !i)) { if variable doesn't fail, show its value }
      & (~!x|put$("   x:=" !x))
      & (~!y|put$("   y:=" !y))
      & (~!z|put$("   z:=" !z))
      & put$\n                  { add new line }
  )
& testproc$((x,1) (y,2) (z,3))
& testproc$((x,3) (y,1) (z,2))
& testproc$((z,4) (x,2) (y,3))  { order is not important }
& testproc$((i,1) (y,2) (z,3))
);

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