Using type functions, you can manipulate defined types. Type
functions are distinguished from built-in functions in the following
ways:
- At least one of the arguments is a defined type.
- They cannot be declared.
- Arguments are enclosed in the (: and :) composite
symbols, rather than in ( and ) symbols.
In this chapter, the type functions are listed in alphabetical
order. In general, each description has the following format:
- A heading showing the syntax of the reference
- A description of the value returned
- A description of any arguments
- Any other qualifications on using the function.
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