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WEBMATHEMATICA SYMBOL

MSPValue

MSPValue[var]
returns the value of var; it returns a null string if var has no value

returns the value of var; it returns def if var has no value

MSPValue is a utility function that is useful for extracting the value of variables.

	MSPException["ValueError"]	if the value is not a string, this indicates a programmatic error by the page author
	MSPException["VariableError"]	if the variable is not a Mathematica symbol, this indicates a programmatic error by the page author

You can simulate how the functions work by loading the package.

The value of the variable $$expr is returned.

If $$expr has no value, then a null string is returned.

Here a default value is returned.

You can simulate how the functions work by loading the package.

The value of the variable $$expr is returned.

Out[1]=

If $$expr has no value, then a null string is returned.

Out[2]=

Here a default value is returned.

Out[3]=