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Runt is a Ruby implementation of select temporal patterns by Martin Fowler described in this paper.
Temporal expressions allow a developer to define patterns of date recurrence using set expressions.
require 'date'
require 'runt'
include Runt
a_monday = Date.new(2013,5,13) # Monday, May 13 - has "day-level" precision
a_wednesday = DateTime.new(2013,5,15,8,45) # Wednesday, May 15 at 8:45am - has "minute-level" precision
monday_expr = DIWeek.new(Mon) # Matches any Monday
monday_expr.include?(a_monday) # => true
monday_expr.include?(a_wednesday) # => false
wednesday_expr = DIWeek.new(Wed) # Matches any Wednesday
wednesday_expr.include?(a_monday) # => false
wednesday_expr.include?(a_wednesday) # => true
#
# Use an "OR" between two expressions
#
mon_or_wed_expr = monday_expr | wednesday_expr # Matches any Monday OR any Wednesday
mon_or_wed_expr.include?(a_monday) # => true
mon_or_wed_expr.include?(a_wednesday) # => true
daily_8_to_11_expr =REDay.new(8,00,11,00,false) # Matches from 8am to 11am on ANY date.
# The 'false' argument says not to auto-match expressions of lesser precision.
at_9 = DateTime.new(2013,5,12,9,0) # Sunday, May 12 at 9:00am
daily_8_to_11_expr.include?(at_9) # => true
#
# On the next line, the given Date instance is "promoted" to the minute-level precision
# required by the temporal expression so the time component defaults to 00:00
#
daily_8_to_11_expr.include?(a_monday) # => false
#
# Use an "AND" between two expressions to match
#
# (Monday OR Wednesday) AND (8am to 11am)
#
mon_or_wed_8_to_11_expr = mon_or_wed_expr & daily_8_to_11_expr
mon_or_wed_8_to_11_expr.include?(a_monday) # => false - 00:00 is not between 8:00 and 11:00
mon_or_wed_8_to_11_expr.include?(at_9) # => false - on Sunday
mon_or_wed_8_to_11_expr.include?(a_wednesday) # => true - a Wednesday at 8:45
Author: Matthew Lipper mlipper@gmail.com
Requires: Tested with J/Ruby 1.8.7, 1.9.3 and Ruby 2.0.x
License: Released under the MIT License (see LICENSE.txt).
This software is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantibility and fitness for a particular purpose.
FAQs
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We found that runt demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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