Fix similar

[davidanthoff]

Fixes #32.

[codecov-io]

Codecov Report

Merging #33 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #33      +/-   ##
==========================================
+ Coverage   84.92%   84.95%   +0.03%     
==========================================
  Files          11       11              
  Lines         471      472       +1     
==========================================
+ Hits          400      401       +1     
  Misses         71       71

Impacted Files	Coverage Δ
src/array/primitives.jl	100% <100%> (ø)	⬆️

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[JeffBezanson]

Thanks!