# Function COPY-STRUCTURE

### Syntax

• copy-structure structurecopy

### Arguments and Values

• structure - a structure.
• copy - a copy of the structure.

### Description

Returns a copy of the structure.

Only the structure itself is copied; not the values of the slots.

None.

None.

None.

### Exceptional Situations

None.

The `:copier` option to defstruct.

### Notes

The copy is the same as the given structure under equalp, but not under equal.

\issue{DEFSTRUCT-COPIER:ARGUMENT-TYPE}