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https://issues.apache.org/jira/browse/TAP5-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAP5-1881.
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 5.4
                   5.3.3

Nice catch!
                
> TypeCoercion from Number to Boolean returns false for any number that is an 
> even multiple of 256
> ------------------------------------------------------------------------------------------------
>
>                 Key: TAP5-1881
>                 URL: https://issues.apache.org/jira/browse/TAP5-1881
>             Project: Tapestry 5
>          Issue Type: Bug
>          Components: tapestry-ioc
>    Affects Versions: 5.3.2
>            Reporter: Jerome Alberto
>            Assignee: Howard M. Lewis Ship
>            Priority: Critical
>              Labels: tapestry5
>             Fix For: 5.3.3, 5.4
>
>
> At the moment the coercion from Number to Boolean is implemented as
> public Boolean coerce(Number input)
> {
>     return input.byteValue() != 0;
> }
> It should be
> public Boolean coerce(Number input)
> {
>     return input.longValue() != 0;
> }
> All numbers (e.g. longs, integers, shorts) will be coerced to false if the 
> number modulo 256 is zero.

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