Function Entry: VLAX-MAP-COLLECTION

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Function Entry: VLAX-MAP-COLLECTION

Name

vlax-map-collection

Class

Visual LISP automation iterator

Syntax

(vlax-map-collection collection function)

Arguments and Values

collection — automation collection object.
function — function designator applied to each member.

Description

Applies a function to each element of an automation collection.

Return Values

Autodesk's documentation specifies traversal semantics but does not state a precise aggregate return-value contract. This specification therefore treats the return value as under-specified.

Exceptional Situations

Signals an AutoLISP-visible error if collection is not an automation collection or if applying function fails.

Notes

vlax-for is the corresponding special-form iteration facility.
Autodesk documents this as applying function to every object in the collection.
The primary observable contract is side-effecting traversal.

Availability

AutoCAD 2026: documented (per Autodesk reference page).
BricsCAD V26: presumed compatible (no contradicting page found).
Status: AutoCAD documented; BricsCAD presumed-both pending Phase 4 verification.

Source Notes

[About Working With Collection Objects (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2026/ESP/AutoCAD-AutoLISP/files/GUID-100F8BDB-2852-4986-BC09-53F77AFCDB96.htm)
[V Functions Reference (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/ENU/AutoCAD-AutoLISP-Reference/files/GUID-26FF2BE2-B5BF-4DD1-A617-36727E51F516.htm)

Compatibility

Available only on Windows; not available on macOS or Web.