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whattype - query the basic data type of an expression
Calling Sequence
whattype(expr)
Parameters
expr
-
any expression
Description
The whattype(expr) function returns the data type name of expr, which may be any of the following basic data types:
`*`
`+`
`.`
`..`
`::`
`<`
`<=`
`<>`
`=`
`^`
`||`
`and`
Array
complex
complex(extended_numeric)
exprseq
extended_numeric
float
fraction
function
hfarray
implies
indexed
integer
list
module
moduledefinition
`not`
`or`
procedure
series
set
string
symbol
table
uneval
unknown
`xor`
zppoly
Matrix
SDMPolynom
Vector[column]
Vector[row]
Although exprseq is not a type name known to the type function, it is the name of the internal data structure for expression sequences.
For a general expression, whattype returns the ``top level'' data type as determined by the order of precedence of the operators.
Examples
See Also
exprseq, NumericClass, operators[precedence], type
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