The Order of Evaluation
- slide 2 : 26
Referential transparency
Two equal expressions can substitute each other without affecting the meaning of a functional program
Referential transparency
provides for easy equational reasoning about a program
does not rely on a particular notion of equality
Reference equality, shallow equality and deep equality cannot be distinguished by functional means
is a major contrast to imperative programming
Equals can be replaced by equals
Foldoc: referential transparency
Equality in Scheme
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