Meaning of {T}

New to Julia
6

And just a quick aside (since you’re referring to my code)… in this specific case the brackets were unnecessary, but the function just above uses the type T in the body of the code to ensure type stability of the constant:

function whitened_pca{T}(o::Whiten{T})
    y = normal_pca(o)
    y[:] = y ./ sqrt.(o.e .+ T(1e-8))
    y
end
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