The SECD machine is a prototype abstract machine for higher-order functional languages using the by-value strategy...

The SECD machine is a prototype abstract machine for higher-order functional languages using the by-value strategy to evaluate lambda “calculus” expressions. It determines how to compute the function expression before evaluating the function expression.

2a) Briefly explain the acronym SECD.

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Answer to 2a

SECD is virtual and abstract machine which is used for high order functional languages to evaluate lamda calculus expressions. The full form of acronym SECD is Stack, Environment ,Control ,Dump machine.

SECD machine contains the registers "stack environment control dump" to help in compilation of functional languages. SECD machines uses the stack based technology which takes an argument from the stack with certain rules and performs the computing of lambda " calculus" expressions.The SECD machine uses four stacks as registers which are as follows-

Stack - It is used to store the partial results of evaluation of lambda expressions and holds the final results of machines execution.
Environment - It has series of pairs that give values to free variables in the expression where the first element of pair is identifier and second elements is it's associated value.
Control - This stack stores the lambda calculus expression which is being evaluated.
Dump - The Dump is used to store the copies of the four stacks.

venereology answered 1 year ago

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