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50. eval_string


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50.1 Functions and Variables for eval_string

Function: eval_string (str)

Parse the Maxima string str as a Maxima expression and evaluate it. str is a Maxima string. It may or may not have a terminator (dollar sign $ or semicolon ;). Only the first expression is parsed and evaluated, if there is more than one.

Complain if str is not a Maxima string.

Examples:

(%i1) eval_string ("foo: 42; bar: foo^2 + baz");
(%o1)                       42
(%i2) eval_string ("(foo: 42, bar: foo^2 + baz)");
(%o2)                   baz + 1764

See also parse_string.

Function: parse_string (str)

Parse the Maxima string str as a Maxima expression (do not evaluate it). str is a Maxima string. It may or may not have a terminator (dollar sign $ or semicolon ;). Only the first expression is parsed, if there is more than one.

Complain if str is not a Maxima string.

Examples:

(%i1) parse_string ("foo: 42; bar: foo^2 + baz");
(%o1)                    foo : 42
(%i2) parse_string ("(foo: 42, bar: foo^2 + baz)");
                                   2
(%o2)          (foo : 42, bar : foo  + baz)

See also eval_string.


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