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| ☜ | NEW1990 Version of ANSI Standard | ☞ | ||||
| N[EW] postcond | │ │ │ |
[ SP ] SP L newargument |
│ │ │ |
See 2.5.1 for the definition of postcond. See section 1 for the definition of L.
| newargument | ::= | │ │ │ │ │ |
lname ( L lname ) @ expratom V L newargument |
│ │ │ │ │ |
See 2.6.11 for the definition of lname. See 2.2 for the definition of expratom. See section 1 for the definition of V. See section 1 for the definition of L.
New provides a means of performing variable scoping.
The three argument forms of New are given the following names:
| a) | lname: | Selective New | |
| b) | (L lname): | Exclusive New | |
| c) | Empty argument list: | New All |
See section 1 for the definition of L.
Each argument of the New command pushes a frame containing the New argument onto the PROCESS-STACK and copies a set of NAME-TABLE entries into the frame.
The actions of the three forms of New are then defined as:
| a) | Selective New | the NAME-TABLE entry for lname is copied into the frame. | |
| b) | Exclusive New | the set of NAME-TABLE entries for all names except the names in the argument are copied into the frame. | |
| c) | New All | all entries in the NAME-TABLE are copied into the frame. |
In all three cases, the NAME-TABLE entries copied into the frame are subsequently deleted from the NAME-TABLE. This deletion has the effect of making the variable unknown in the current process context.
See 2.6.15 for a description of the actions of Quit.
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Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.
This page most recently updated on 15-Nov-2023, 14:46:14.
For comments, contact Ed de Moel (demoel@jacquardsystems.com)