st: Bootstrap a vector in Mata

[smerryman@kc.rr.com]

I would like to bootstrap a vector in Mata but I am not sure if I am 
doing it correctly.  My code is:

mata
mata clear
st_view(a=.,.,"x")
nr = rows(a)
for (i = 1; i <=1000; i++) {
 line5:   b = floor(uniform(nr,1)*nr + J(nr,1,1))
 line6:   boot=a[b]
          //other commands using boot
}
end

Are lines 5 and 6 sufficient to bootstrap vector "a"?

Thanks you,
Scott
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