Class: Teletype::Stats

Inherits:
Object
  • Object
show all
Defined in:
lib/teletype/stats.rb

Overview

Stats keep track of hit/miss rate for each key and suggests a key that needs more practice.

Defined Under Namespace

Classes: Pair

Instance Method Summary collapse

Constructor Details

#initialize(text) ⇒ Stats

Returns a new instance of Stats.



6
7
8
9
10
 
# File 'lib/teletype/stats.rb', line 6

def initialize(text)
  @previous = nil
  @pairs = {}
  load(text)
end

Instance Method Details

#file ⇒ Object 



28
29
30
 
# File 'lib/teletype/stats.rb', line 28

def file
  File.join(Dir.home, '.teletype-stats')
end

#hit!(key) ⇒ Object 



32
33
34
 
# File 'lib/teletype/stats.rb', line 32

def hit!(key)
  lookup(key)&.hit!
end

#load(text) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
 
# File 'lib/teletype/stats.rb', line 12

def load(text)
  return unless File.exist?(file)

  File.readlines(file).each do |line|
    keys, hit, miss = line.split("\t")
    @pairs[keys] = Pair.new(keys,
                            hit: Integer(hit),
                            miss: Integer(miss),
                            available: text.scan(keys).count.positive?)
  end
end

#lookup(key) ⇒ Object 



40
41
42
43
44
45
46
47
 
# File 'lib/teletype/stats.rb', line 40

def lookup(key)
  current = key.downcase
  keys = "#{@previous}#{current}"
  @previous = current
  return if keys.strip.length < 2

  @pairs[keys] ||= Pair.new(keys)
end

#miss!(key) ⇒ Object 



36
37
38
 
# File 'lib/teletype/stats.rb', line 36

def miss!(key)
  lookup(key)&.miss!
end

#rankings ⇒ Object 



53
54
55
 
# File 'lib/teletype/stats.rb', line 53

def rankings
  @pairs.values.select(&:available).sort.first(10).map(&:to_s).join(' ')
end

#save ⇒ Object 



24
25
26
 
# File 'lib/teletype/stats.rb', line 24

def save
  File.write(file, @pairs.map { |k, p| [k, p.hit, p.miss].join("\t") }.join("\n"))
end

#suggestions(_lines) ⇒ Object 



49
50
51
 
# File 'lib/teletype/stats.rb', line 49

def suggestions(_lines)
  @pairs.values.select(&:available).select(&:inefficient?).sort.map(&:keys)
end