☆コア拡張☆

• 準備
• Period Duration
• 四則
• ブロック
• Interval Length
• 四則
• ブロック
• Duration
• 四則
• ブロック

コアクラスを require 'when_exe/core/extension' で拡張した場合の記法を確認

準備

 require 'when_exe'
 require 'when_exe/core/extension'
 include When

Period Duration

四則

 date = when?('2013-03-25')
 p date                               #=> 2013-03-25
 duration = 2.months_period_duration
 p duration                           #=> P2M
 p date + duration                    #=> 2013-05-25
 p date - duration                    #=> 2013-01-25
 duration2 = duration * 2
 p duration2                          #=> P4M
 p duration2 + duration               #=> P6M
 p duration2 - duration               #=> P2M
 p date + duration2                   #=> 2013-07-25
 p duration2 / 2                      #=> P2M
 begin
   p duration2 / duration
 rescue => e                          #=> TypeError: nil can't be coerced into Float
   p e
 end

ブロック

 start = when?('2013-03-25')
 p start                              #=> 2013-03-25
 stop  = when?('2013-09-01')
 p stop                               #=> 2013-09-01
 duration = 2.months_period_duration
 (start ^ duration).each do |date|
   break if date >= stop
   p date                             #=> 2013-03-25,2013-05-25,2013-07-25
 end
 duration.enum_for(start, :forward, 3).each do |date|
   p date                             #=> 2013-03-25,2013-05-25,2013-07-25
 end

Interval Length

四則

 time = when?('2013-03-25T01:23:45')
 p time                               #=> 2013-03-25T01:23:45Z
 duration = 3.seconds_interval_length
 p duration                           #=> 3s
 p time + duration                    #=> 2013-03-25T01:23:48Z
 p time - duration                    #=> 2013-03-25T01:23:42Z
 duration2 = duration * 2
 p duration2                          #=> 6s
 p duration2 + duration               #=> 9.0s
 p duration2 - duration               #=> 3.0s
 p time + duration2                   #=> 2013-03-25T01:23:51Z
 p duration2 / 2                      #=> 3.0s
 p duration2 / duration               #=> 2.0

ブロック

 start = when?('2013-03-25T01:23:45')
 p start                              #=> 2013-03-25T01:23:45Z
 stop  = when?('2013-03-25T01:23:54')
 p stop                               #=> 2013-03-25T01:23:54Z
 duration = 3.seconds_interval_length
 (start ^ duration).each do |time|
   break if time >= stop
   p time                             #=> 2013-03-25T01:23:45Z,2013-03-25T01:23:48Z,2013-03-25T01:23:51Z
 end
 duration.enum_for(start, :forward, 3).each do |time|
   p time                             #=> 2013-03-25T01:23:45Z,2013-03-25T01:23:48Z,2013-03-25T01:23:51Z
 end

Duration

四則

 time = when?('2013-03-25T01:23:45')
 p time                               #=> 2013-03-25T01:23:45Z
 duration =  3.seconds_duration
 p duration                           #=> [0, 0, 0, 3.0]
 p time + duration                    #=> 2013-03-25T01:23:48Z
 p time - duration                    #=> 2013-03-25T01:23:42Z
 duration2 = duration * 2
 p duration2                          #=> [0, 0, 0, 6.0]
 p duration2 + duration               #=> [0, 0, 0, 9.0]
 p duration2 - duration               #=> [0, 0, 0, 3.0]
 p time + duration2                   #=> 2013-03-25T01:23:51Z
 p duration2 / 2                      #=> [0, 0, 0, 3.0]
 p duration2 / duration               #=> 2.0

ブロック

 start = when?('2013-03-25T01:23:45')
 p start                              #=> 2013-03-25T01:23:45Z
 stop  = when?('2013-03-25T01:23:54')
 p stop                               #=> 2013-03-25T01:23:54Z
 duration =  3.seconds_duration
 (start ^ duration).each do |time|
   break if time >= stop
   p time                             #=> 2013-03-25T01:23:45Z,2013-03-25T01:23:48Z,2013-03-25T01:23:51Z
 end
 duration.enum_for(start, :forward, 3).each do |time|
   p time                             #=> 2013-03-25T01:23:45Z,2013-03-25T01:23:48Z,2013-03-25T01:23:51Z
 end