No, look at the documentation for the Comparator class. The method that
does the comparison is called "compare". You are citing the documentation
for the string class compare and compareTo methods. Those are not the same
things.
Rick
On Mon, May 14, 2018 at 3:58 PM, Leslie Turriff <[email protected]> wrote:
> On 2018-05-14 14:39:36 Rick McGuire wrote:
> > On Mon, May 14, 2018 at 3:27 PM, Leslie Turriff <[email protected]>
> wrote:
> > It's frustration, really; I didn't mean to be sharp. It seems as
> > if much of the time, things that seem straightforward, in ooRexx turn out
> > to require considerable additional unexpected coding.
> >
> > It is written this way because it gives you the flexibility to determine
> > how things work rather than waiting for a developer to decide some
> feature
> > you want is more important than some other feature that somebody else
> > wants. Frankly, a request for a NumericColumnComparator would fall
> pretty
> > far down the list of things I might work on, but once you have written
> one
> > yourself, you can reuse it over and over again in as many places you
> want.
> >
> > Here is a quick version (untested):
> > ::CLASS 'NumericColumnComparator' MIXINCLASS Comparator Public
> > ::METHOD init
> >
> > expose start length precision
> > use strict arg start, length, precision = (digits())
> >
> > ::METHOD compare
> >
> > expose start length precision
> >
> > use strict arg left, right
> >
> > numeric digits precision
> > -- the sign from the subtraction result is the correct return
> > -- value for an ordering comparison.
> > return sign(substr(left, start, length) - substr(right, start, length))
>
> Uh-huh. I notice, though, (and this might just be my
> misunderstanding again)
> that
> '5.1.3.33. compare
>
> Returns 0 if the argument string is identical to the receiving string.
> Otherwise, returns the position of the first character that does not
> match.
> The shorter string is padded on the right with pad if necessary. The
> default
> pad character is a blank.'
>
> while
>
> '5.1.3.34. compareTo
>
> Performs a sort comparison of the target string to the string argument. If
> the
> two strings are equal, 0 is returned. If the target string is larger, 1 is
> returned. -1 if the string argument is the larger string. The comparison
> is
> performed starting at character n for length characters in both strings. n
> must be a positive whole number. If n is omitted, the comparison starts at
> the first character. length must be a non-negative whole number. If
> omitted,
> the comparison will take place to the end of the target string.'
>
> so shouldn't I be providing a new compareTo, not compare, for this?
>
>
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