nreplace, nreplace_equal

Arguments

Returns

The list, with all occurrences of old_s_exp destructively replaced by new_s_exp.

Description

nreplace traverses the list, replacing any element which is eq to old_s_exp with new_s_exp. nreplace_equal uses equal as its comparison function.

Example

Gamma> R = list (#f, nil, 5, #ftg);
(f nil 5 ftg)
Gamma> nreplace(#h, #ftg, R);
(f nil 5 h)

Gamma> x = list(1,2,3,1,6,7);
(1 2 3 1 6 7)
Gamma> nreplace(4,1,x);
(1 2 3 1 6 7)
Gamma> nreplace_equal(4,1,x);
(4 2 3 4 6 7)
Gamma> x;
(4 2 3 4 6 7)
Gamma> 
		

See Also

remove, nremove