How to obtain indices of an array satisfying boolean condition

New to Julia
3 
julia> A = randn(10)
10-element Array{Float64,1}:
 -0.10597385263640592
  0.6804124752504479 
 -0.745552871357189  
 -0.8316766727532244 
 -0.4136441092819935 
 -1.7795858830337792 
 -0.7049887890183149 
  1.495347684116737  
 -0.05797357451997173
  0.1689282220877404 

julia> findall(>(0), A)
3-element Array{Int64,1}:
  2
  8
 10
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