freeze, thaw
replace an expression by a name
Calling Sequence
Parameters
Description
Examples
freeze(expr)
thaw(var)
expr
-
the expression to be ``frozen''
var
the ``frozen'' variable
freeze replaces its argument, expr (not a complex or real numeric constant, a name, or a string), with a name of the form freeze/R0, freeze/R1, ...
To return the original expression the thaw function must be used.
This can be used to prevent parts of an expression from being subjected to the effects of symbolic manipulation.
See Also
frontend
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