benchmark.txt

Warming up --------------------------------------
            String#+    39.000  i/100ms
       String#concat    37.000  i/100ms
                  +=    38.000  i/100ms
           String#<<    36.000  i/100ms
            String#%    10.000  i/100ms
          Array#join    13.000  i/100ms
       Interpolation    92.000  i/100ms
               space    92.000  i/100ms
 interpolation space    92.000  i/100ms
Calculating -------------------------------------
            String#+    405.094  (± 1.0%) i/s -      2.028k in   5.006850s
       String#concat    379.593  (± 1.1%) i/s -      1.924k in   5.069193s
                  +=    383.665  (± 0.8%) i/s -      1.938k in   5.051605s
           String#<<    372.362  (± 0.5%) i/s -      1.872k in   5.027569s
            String#%    100.943  (± 1.0%) i/s -    510.000  in   5.052571s
          Array#join    135.165  (± 1.5%) i/s -    676.000  in   5.002483s
       Interpolation    923.941  (± 0.6%) i/s -      4.692k in   5.078477s
               space    921.247  (± 0.9%) i/s -      4.692k in   5.093493s
 interpolation space    929.760  (± 0.6%) i/s -      4.692k in   5.046695s

Comparison:
 interpolation space:      929.8 i/s
       Interpolation:      923.9 i/s - same-ish: difference falls within error
               space:      921.2 i/s - same-ish: difference falls within error
            String#+:      405.1 i/s - 2.30x slower
                  +=:      383.7 i/s - 2.42x slower
       String#concat:      379.6 i/s - 2.45x slower
           String#<<:      372.4 i/s - 2.50x slower
          Array#join:      135.2 i/s - 6.88x slower
            String#%:      100.9 i/s - 9.21x slower