mean_variance

pure nothrow @property @nogc

T[2]

mean_variance

(

)

(

in T[] arr

)

if (

is(typeof(T.init + T.init) == T) &&

is(typeof(T.init - T.init) == T)

is(typeof(T.init * T.init) == T)

is(typeof(T.init / 1UL) == T)

)

Return Value

Type: T[2]

mean (0 element), variance (1 element)

auto a = [ 1.0f, 1, 1 ];
assert( a.mean_variance == [ 1.0f, 0.0f ] );

auto b = [ 1.0f, 2, 3 ];
assert( b.mean_variance == [ 2.0f, 1.0f ] );

import des.math.linear.vector;

auto a = [ vec3(1,2,3), vec3(2,3,4), vec3(3,4,5) ];
assert( a.mean_variance == [ vec3(2,3,4), vec3(1,1,1) ] );