3.1 Values in General

The module Value contains procedures that can operate on many kinds of values.

=

{Value.'=' X Y}

unifies the values of the variables X and Y.

==

{Value.'==' X Y ?B}

tests whether X is equal to Y. The test may suspend.

\=

{Value.'\\=' X Y ?B}

tests whether X is not equal to Y. The test may suspend.

toVirtualString

{Value.toVirtualString X +DepthI +WidthI ?VS}

returns a virtual string describing the value of X. Note that this does not block on X. The values of DepthI and WidthI are used to limit output of records in depth and width respectively.