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Here are listed a few functions which convey information about expressions and other macro functions.

 

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type
type

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string type (any)

Returns the type of an expression as a string.


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arguments
arguments

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list arguments ()

Returns the list of the arguments with which the current function was called. Used to retrieve the arguments passed to functions which are declared without an argument list and to retrieve arguments passed to a macro program run in batch mode.


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describe
describe

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none describe ( string )

Prints a terse one-line description of the function whose name is passed as the argument.


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dictionary
dictionary

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list dictionary ()

Returns a list of all the available functions.


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is_feature_available
is_feature_available

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number is_feature_available(string)

Queries whether the specified feature is available in this version of Metview. Returns 1 if it is, or 0 if it is not. Currently, only the following string is accepted as the query term: "odb".


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version_info
version_info

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definition version_info ()

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