Efficient probability testing

• haskell

  9 477 7.5 Haskell

  Exercism exercises in Haskell. (by exercism)

  

To explore this space I created an Exercism exercise called dnd-character.

• problem-specifications

  7 314 8.8 Ruby

  Shared metadata for exercism exercises.

  

First @AnAccountForReportingBugs suggested testing the mean/std.dev. via sampling, but that didn't persuade the crowd (myself included). There were two concerns: performance, and probability of false negatives. -- "Our unit tests should be 'too fast to notice'" -- "With which frequency will this test randomly fail?" -- "[...] I'd be happy to be proved wrong by a 100% reliable test that executes in <100ms." after which they rightfully responded,

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• java

  20 659 9.6 Java

  Exercism exercises in Java. (by exercism)

  

Then @jippiee suggested testing the probability distribution, and actually delivered a PR to the Java track. First, it cached the correct probability distribution, but provided a program that generates it. I tried to nudge the PR along, and this prompted @jippiee to submit a couple of graphs, one after the other:

Suggest a related project