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Page 45: Replacing the Conditional Logic on Price Code with Polymorphism (added NewReleasePrice.charge and ChildrensPrice.charge and changed Movie.charge to simply delegate to these)

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chapter_1.rb

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`‎chapter_1.rb‎`

Lines changed: 9 additions & 11 deletions

Original file line number	Diff line number	Diff line change
`@@ -20,17 +20,7 @@ def price_code=(value)`
`20`	`20`	`end`
`21`	`21`
`22`	`22`	`def charge(days_rented)`
`23`		`- result = 0`
`24`		`- case price_code`
`25`		`- when Movie::REGULAR`
`26`		`- return @price.charge(days_rented)`
`27`		`- when Movie::NEW_RELEASE`
`28`		`- result += days_rented * 3`
`29`		`- when Movie::CHILDRENS`
`30`		`- result += 1.5`
`31`		`- result += (days_rented - 3) * 1.5 if days_rented > 3`
`32`		`- end`
`33`		`- result`
	`23`	`+ @price.charge(days_rented)`
`34`	`24`	`end`
`35`	`25`
`36`	`26`	`def frequent_renter_points(days_rented)`
`@@ -47,9 +37,17 @@ def charge(days_rented)`
`47`	`37`	`end`
`48`	`38`
`49`	`39`	`class NewReleasePrice`
	`40`	`+ def charge(days_rented)`
	`41`	`+ days_rented * 3`
	`42`	`+ end`
`50`	`43`	`end`
`51`	`44`
`52`	`45`	`class ChildrensPrice`
	`46`	`+ def charge(days_rented)`
	`47`	`+ result = 1.5`
	`48`	`+ result += (days_rented - 3) * 1.5 if days_rented > 3`
	`49`	`+ result`
	`50`	`+ end`
`53`	`51`	`end`
`54`	`52`
`55`	`53`	`class Rental`

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Commit fde9ccc

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`‎chapter_1.rb‎`

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