Modern Result Fail

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Fail

Returns a failed Result holding the reason; both types must be written out.

Syntax

Fail( of T, E )
Fail( of int32, ustring )

Examples

#import "std/outcome"
using outcome

dim r as Result( of int32, ustring ) = Fail( of int32, ustring )( "not a number" )

print r.IsOk( )              '' false
print r.Failure( )           '' not a number

'' T and E MAY BE THE SAME TYPE -- Result( of ustring, ustring ) is a normal
'' thing to want. The slots stay distinct because they are two fields,
'' not a union.

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Library: Result
Category: Result
Documented under: Members