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Version 1.9 Build 1556

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types.list - Function

	Package	utility
	Module	tasking
	Tool	types

Define a list of other types

Synopsis
list(arg, types, options, name, names, default, dir, checkeval, help, allowunset)

Description
This widget allows the assembly of types containing zero or more composite types, where the composite type can be made of one or more other types. The user may then add or delete these composite types.

Any number of types may be included in a composite type. The corresponding arguments are given in either vector string or record form.

The test function typestest demonstrates a list type.

Arguments

arg		List of arguments
		Allowed:	String
types		List of types
		Allowed:	String
options		Record of options
		Allowed:	Record
name		Name of the composite type
		Allowed:	Vector String
names		Names of individual types
		Allowed:	Vector String
default		Default values
		Allowed:	Region
		Default:	unset
dir		Direction of variable
		Allowed:	String: 'in'|'inout'|'out'
		Default:	'in'
checkeval		Check eval'ability
		Allowed:	Boolean
		Default:	T
help		Help string: if unset, help file is used
		Allowed:	String
		Default:	unset
allowunset		Allow unset values?
		Allowed:	Boolean
		Default:	F

Example

# The following defines a list containing two other types: string
# and direction.
    list('Sources', types=['string', 'direction'], names="Source Direction",
	 name='Source', default=[Name='3C273', Direction=dm.direction()],
	 help=['Source name', 'Source direction'],
	 allowunset=T,
	 options=unset);