chickadee » fmt » decimal-align

Specifies an alignment for the decimal place when formatting numbers, useful for outputting tables of numbers.

  (define (print-angles x)
     (fmt-join num (list x (sin x) (cos x) (tan x)) " "))

  (fmt #t (decimal-align 5 (fix 3 (fmt-join/suffix print-angles (iota 5) nl))))

would output

  0.000    0.000    1.000    0.000
  1.000    0.842    0.540    1.557
  2.000    0.909   -0.416   -2.185
  3.000    0.141   -0.990   -0.142
  4.000   -0.757   -0.654    1.158