Jira (PUP-5965) Add 'new instance' operation

[Henrik Lindberg (JIRA)]

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Henrik Lindberg created an issue   Puppet / PUP-5965 Add 'new instance' operation Issue Type: New Feature Assignee: Unassigned Created: 2016/02/24 7:11 AM Fix Versions: PUP 4.5.0 Priority: Normal Reporter: Henrik Lindberg With the additions being made to the type system to handle more advanced data types there is the need to be able to create new instances of such types from arguments. There are two use-cases - although quite similar: in regular logic building a data structure Basically the operation can be implemented as a 'new' function: MyType.new(args) This constructor may however not be ideal as it is args by position based, and if there are many arguments and optionality involved it gets difficult (and verbose) when using this in a data structure. Therefore, we should also support the 'short form' which is a "call to a type". In this form, the arguments are given as a hash with arg/attribute to value mappings. MyType({x_value => 1, y_value =>2, z_value =>3}) # which would be equivalent to: MyType.new(1,2,3) # But since it is "by name", this works fine (given that z_value is optional/has default) MyType({y_value =>2, x_value =>1}) Thus, in a data structure it becomes natural to use the more declarative looking "by name" style: [code: puppet} $routes = [ Route({ points => [Point( {x => 0, y => 0} ), Point( {x=>10, y=>10} ), Route({ points => [Point( {x => 2, y => 7} ), Point( {x=>32, y=>42} ), ] This ticket includes adding sane default constructors for all types in the type system. The constructors should be simple and strict. Flexibility should instead be available in the type converter logic. Add Comment   This message was sent by Atlassian JIRA (v6.4.12#64027-sha1:e3691cc) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.