[#BOO-805] Can't use == on nullable types

Boo

Can't use == on nullable types

Created: 24/Feb/07 04:15 PM Updated: 06/Apr/08 08:51 AM

Component/s:

None

Affects Version/s:

None

Fix Version/s:

0.8.2

Time Tracking:

Not Specified

Issue Links:

Related

This issue is related to:

~~BOO-807~~ Issues with using nullable types in Boo

dependent

This issue depends upon:

~~BOO-820~~ Honor generic parameter constraints when constructing generic types

Description

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>>> Something = null
>>> f as Nullable of System.Single = Something
>>> f
>>> f == null
----^
ERROR: 'is' can't be used with a value type ('System.Nullable`1[[System.Single, mscorlib, Version=2.
0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]')

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Avishay Lavie - 07/Apr/07 08:46 AM

The compiler should translate null-tests on nullable types to tests using the HasValue field.
We should also implement some shorthand syntax for Nullable of T, like T? in C#.

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Arron Washington - 07/Apr/07 02:55 PM

Would love to see this feature!

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Cedric Vivier - 30/Apr/07 04:08 AM

I've posted an issue about the shorthand syntax to be resolved for 0.8 :
http://jira.codehaus.org/browse/BOO-818

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Cedric Vivier - 30/Apr/07 03:13 PM

I guess we can postpone this to 0.8 since there is no point fixing this before ~~BOO-807~~ is fixed imho.

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Cedric Vivier - 06/Apr/08 08:51 AM

fixed in rev. 2898