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expratom

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expratom

Introduced in the 1977 ANSI M[UMPS] language standard.

This metalanguage symbol represents the basic value-denoting object of which expressions are built. An expratom can be a name of a local variable (with or without subscripts), a name of a global variable (with or without subscripts), a special variable name, a function-reference, a numeric literal, a string literal, another expression in parentheses, or a unary operator followed by an expratom.

Modified in the 1984 ANSI M[UMPS] language standard.

This metalanguage symbol represents the basic value-denoting object of which expressions are built. An expratom can be a name of a local variable (with or without subscripts), a name of a global variable (with or without subscripts), or an expritem.

Modified in the 1995 ANSI M[UMPS] language standard.

This metalanguage symbol represents the basic value-denoting object of which expressions are built. An expratom can be a name of a local variable (with or without subscripts), a name of a global variable (with or without subscripts), a name of a structured system variable (which always has at least one subscript) or an expritem.

Approved for addition in a future M[UMPS] language standard.

An expratom may also be a reference to a property or a method of an object.

expritem

Introduced in the 1984 ANSI M[UMPS] language standard.

This metalanguage symbol represents a further refined value-denoting object of which expressions are built. An expritem can be a special variable name, a function-reference, a numeric literal, a string literal, another expression in parentheses, or a unary operator followed by an expratom.

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Copyright © Standard Documents; 1977-2018 MUMPS Development Committee;
Copyright © Examples: 1995-2018 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2018 Ed de Moel.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 13-Sep-2014, 09:07:18 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)