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type/list

check for a list

 

Calling Sequence

Parameters

Description

Subtypes

Supertypes

Examples

Calling Sequence

type(expr, list)

type(expr, list(K))

Parameters

expr

-

any expression

K

-

type name

Description

• 

In the first calling sequence, the type command checks if expr is a valid Maple list. It returns true if expr is a list and false otherwise.

• 

See the list help pages for a description of the list datatype.

• 

In the second calling sequences, where K is a specified type name, the type command checks whether expr is a list whose entries are of type K.  That is, type(expr, list(K)) returns true if type(expr, list) is true and type(x, K) is true for each entry x of expr.

• 

See the type help page for a description of valid types in Maple.

Subtypes

• 

type/nonemptylist

Supertypes

• 

type/sequential

Examples

S1,32,2

S1,32,2

(1)

typeS,list

true

(2)

typeS,listrational

true

(3)

typeS,listinteger

false

(4)

Lx41,x2,x+3

Lx41,x2,x+3

(5)

typeL,list

true

(6)

typeL,listpolynominteger,x

true

(7)

See Also

list

set

type

type/listlist

type/nonemptylist

type/sequential

type/set