[fdo-internals] Please review new RFC 22 - Enhance expression engine CONCAT function

[Jackie Ng]

Going to slightly deviate from the discussion here:

Do you foresee new expression functions in the future that would look like
this:

MyVariableArgumentFunction(arg1, arg2, ...)

where there are actual defined arguments, followed by a variable argument
list?

It would seem that the proposed FdoFunctionDefinition wouldn't handle such a
scenario should it arise in the future.

- Jackie


Orest Halustchak wrote:
> 
> Hi,
> 
> The CONCAT function in the FDO expression language is difficult to use in
> many cases because it supports only two parameters. If you need to
> concatenate a set of more than two strings, you have to use nested calls
> which is not convenient and error prone.
> 
> RFC 22, drafted by Dan Stoica, proposes to support a variable set of
> parameters for this function to make it easier to use.
> 
> http://trac.osgeo.org/fdo/wiki/FDORfc22
> 
> Have a look at the RFC and provide your comments.
> 
> Thanks,
> Orest.
> 
> 
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> 
> 

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