If you're talking about errgo, if all we care about is transition, but not what the actual types are, we could just record in the list when we mask the type. On May 27, 2014 8:48 PM, "Tim Penhey" <[email protected]> wrote:
> On 28/05/14 12:43, Nate Finch wrote: > > This sounds like one of those "if you have to ask this question, you're > > doing something wrong". > > > > Can you give an example of where we need this? > > Sure... let's say we have a stack of errors, for simplicity of the > argument lets say it is a slice of error interface values. > > stack []error > > * an error is pushed on to the stack initially, we now have one error > * the same error is pushed (or appended - I don't care) > * we now have the same error twice > * I push a new error on the stack, so it looks a little like this > [err1, err1, err2] right? > > Now iterating through this slice I want to know when the error changes. > > There seems to be no clean way to do this. > > Tim > > >
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