☜	MERGE Draft MDC Standard					☞

8.2.23 Merge

M[ERGE] postcond SP L mergeargument

Merge provides a facility to copy a glvn₂ into a glvn₁ and all descendants of glvn₂ into descendants of glvn₁ according to the scheme described below.

Merge does not Kill any nodes in glvn₁, or any of its descendants.

Assume that glvn₁ is represented as A(i₁ , i₂ , ... , i_x ) (x '< 0) and that glvn₂ is represented as B(j₁ , j₂ , ... , j_y ) (y'<0). Then:

1. If $Data( B(j₁ , j₂ , ... , j_y ) ) has a value of 1 or 11, then the value of glvn₂ is given to glvn₁.
2. The value for every occurrence of z, such that z > 0 and $Data( B(j₁ , j₂ , ... , j _{y + z} ) ) has a value of 1 or 11, the value of B(j₁ , j₂ , ... , j _{y + z} ) is given to A(i₁ , i₂ , ... , i_x , j _{y + 1} , j _{y + 2} , ... , j _{y + z} ).

The state of the naked indicator will be modified as if $Data( glvn₂ ) # 10 = 1 and the command Set glvn₁ = glvn₂ would have been executed.

If glvn₁ is a descendant of glvn₂ or if glvn₂ is a descendant of glvn₁ an error condition occurs with ecode = "M19".

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Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 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 15-Nov-2023, 14:46:00.

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