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This replaces boilerplate in the “benchmark your code” section of the
contributors’ guide with an executable template. I also amended the text
to encourage best practices and codified it in the template.
For now this is only good for relatively self-contained changes that can
be inlined into a simple script. In the future, this can be expanded to
cover how to measure the difference between two commits.
The output looks like this:
```
==================================== Empty =====================================
Warming up --------------------------------------
blank? 225.963k i/100ms
fast_blank? 238.147k i/100ms
Calculating -------------------------------------
blank? 8.825M (± 6.4%) i/s - 44.063M in 5.014824s
fast_blank? 9.311M (± 6.3%) i/s - 46.439M in 5.009153s
Comparison:
fast_blank?: 9310694.8 i/s
blank?: 8824801.7 i/s - same-ish: difference falls within error
================================= Single Space =================================
Warming up --------------------------------------
blank? 56.581k i/100ms
fast_blank? 232.774k i/100ms
Calculating -------------------------------------
blank? 813.985k (±16.7%) i/s - 4.017M in 5.076576s
fast_blank? 9.547M (± 5.2%) i/s - 47.719M in 5.013204s
Comparison:
fast_blank?: 9547414.0 i/s
blank?: 813985.0 i/s - 11.73x slower
================================== Two Spaces ==================================
Warming up --------------------------------------
blank? 58.265k i/100ms
fast_blank? 244.056k i/100ms
Calculating -------------------------------------
blank? 823.343k (±16.2%) i/s - 4.020M in 5.014213s
fast_blank? 9.484M (± 4.9%) i/s - 47.347M in 5.005339s
Comparison:
fast_blank?: 9484021.6 i/s
blank?: 823343.1 i/s - 11.52x slower
=============================== Mixed Whitspaces ===============================
Warming up --------------------------------------
blank? 53.919k i/100ms
fast_blank? 237.103k i/100ms
Calculating -------------------------------------
blank? 763.435k (±16.8%) i/s - 3.720M in 5.018029s
fast_blank? 9.672M (± 5.8%) i/s - 48.369M in 5.019356s
Comparison:
fast_blank?: 9672467.2 i/s
blank?: 763435.4 i/s - 12.67x slower
=============================== Very Long String ===============================
Warming up --------------------------------------
blank? 34.037k i/100ms
fast_blank? 240.366k i/100ms
Calculating -------------------------------------
blank? 409.731k (± 8.9%) i/s - 2.042M in 5.028235s
fast_blank? 9.794M (± 4.3%) i/s - 49.035M in 5.016328s
Comparison:
fast_blank?: 9794225.2 i/s
blank?: 409731.4 i/s - 23.90x slower
```
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