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This gist belongs to Clean Code Cookbook http://cleancodecookbook.com By Maximiliano Contieri http://maximilianocontieri.com
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| forRecipients: recipients | |
| recipients do: [:eachAddress | | |
| eachAddress isString | |
| ifFalse: [ | |
| self error: (eachAddress , ' is not a valid recipient')] ]. | |
| (recipients asSet size = recipients size) | |
| ifFalse: [ | |
| self error: 'Duplicates']. | |
| ^self new initializeForRecipients: recipients |
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