SciRuby/daru

Regular expression matching for vectors

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#174 opened on Jun 26, 2016

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Description

I feel like we should have a function to match regular expression like we have eq, lt, etc.

It would work as follow:

> dv = Daru::Vector.new ['abc', 'aaa', 'xet', 'ccc']
> dv.where(dv.match /a/)
#<Daru::Vector:17216960 @name = nil @metadata = {} @size = 2 >
    nil
  0 abc
  1 aaa

Contributor guide

Research direction
Examine how existing comparison methods like `eq` and `lt` are implemented in the Daru::Vector class. Then replicate the pattern to create a `match` method that accepts a regular expression and returns a boolean vector.
Tech stack
ruby
Domain
data
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Ruby
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75