predicates rather than MayBe[] typing

[dkj]

I've preference for testing presence with has_foo where the foo attribute has required => 0 over using a is => MayBe[] construct. I think this plays better with MooseX::GetOpts, and also seems more precise (at the cost of moving further from non-Moose Perl to more Moose Perl).

Following on from (but not blocking) #86

[mgcam]

On 09/12/2016 09:06, dkj wrote: I've preference for testing presence with |has_foo| where the |foo| attribute has |required => 0| over using a |is => MayBe[]| construct. I think this plays better with MooseX::GetOpts, and also seems more precise (at the cost of moving further from non-Moose Perl to more Moose Perl). Following on from (but not blocking) #86 <#86>

|MayBe[] is needed when undef has to be assigned explicitly. If an explicit assignment can be avoided, then ||it should be possible to avoid ||MayBe[] as well and get by with has_foo, which is what I mostly do these days. Marina |

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