Re: [Pyparsing] Grouping when using asList()

[Paul M. <pt...@au...>]

Oooh, I'm *tempted*, so tempted.

What do you think of Joshua's proposal of passing through the **kw dict?
It's a little more explicit without requiring the full ".setResultsName"
syntax.  Side-by-side, the options are:

A) date = twoDigitInt("month*") + '/' + twoDigitInt("day")
B) date = twoDigitInt("month", listAllMatches=True) + '/' +
twoDigitInt("day")

I could go either way.  Just for the sake of alternatives, I tried some
other string-based indicators:

C) date = twoDigitInt("month!") + '/' + twoDigitInt("day")
D) date = twoDigitInt("month+") + '/' + twoDigitInt("day")
E) date = twoDigitInt("[month]") + '/' + twoDigitInt("day")
F) date = twoDigitInt("{month}") + '/' + twoDigitInt("day")

but I'm not compelled to use any of these over '*'.  

Mostly I'm concerned about accidental listAllMatches behavior when a results
name is set from within the parsing of a Dict, which is a bit out of the
developer's control - the results names are taken from the input text
stream, and could reasonably contain any of these options.

Any other comments from others on the list?

-- Paul



-----Original Message-----
From: pyp...@li...
[mailto:pyp...@li...] On Behalf Of Ralph
Corderoy
Sent: Friday, March 07, 2008 4:07 AM
To: pyp...@li...
Subject: Re: [Pyparsing] Grouping when using asList()


Hi Paul,

> date = twoDigitInt("month") + '/' + twoDigitInt("day") + '/' +
> twoDigitInt("year")
> 
> Try to look past the "it's a function call" to "this is a lot easier 
> to specify a results name than that old way!".  (However, if you need 
> to add the listAllMatches attribute, this still requires the explicit 
> call to setResultsName.)

How about signifying in the string that listAllMatches should be true, e.g.
'month*'?

Cheers,


Ralph.


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