rplaca

rplaca( 
l_arg1 
g_arg2 
) 
=> l_result

Description

Replaces the first element of a list with an object. This function does not create a new list; it alters the input list, in the same way as setcar. This is a destructive operation, meaning that any other reference to the list will also see the change.

Arguments

l_arg1	A list.
g_arg2	Any SKILL object.

Value Returned

l_result

Modified l_arg1 with the car of l_arg1 replaced by g_arg2.

Examples

x = '(a b c)
rplaca( x 'd )    
=> (d b c)

x                 
=> (d b c)

The car of x is replaced by the second argument.

Related Topics

rplacd

setcar

setcdr

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