mcfunley / mcfunley/experiment-model

"What percentage of visits will see the change?" breaks on 99.0%+

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Dominant language
JavaScript
Stars
54
Forks
12
PR merge metrics
No merged PRs in 30d

Description

The calculator is awesome--thanks!

I tried inputting 99.99%, and got a really weird answer. I'm pretty sure its because of the way JS processes decimals. Maybe a solution is to not allow any values between 99.0% and 100%, non-inclusive? Not sure what the best solution would be.

Anyways, just wanted to leave this here in case anyone uses this in the future.

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Research direction

Reproduce the calculator result with an input of 99.99% and inspect how the percentage is processed. Determine the expected behavior for values between 99% and 100%, then verify that the calculator gives a sensible result or clearly rejects unsupported values.

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Assessment

Tech stack
javascript
Domain
web-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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