GO Perlin Noise generator 
Adapted for go from GEGL http://git.gnome.org/browse/gegl/tree/operations/common/perlin
Example: perlin.Noise1D
alpha = 2
beta = 2
n = 3
Using perlin.Noise2D with termbox to generate terrain in terminal:
go-perlin
Perlin noise generator in Go
GO Perlin Noise generator
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