Re: Regex query

2002-09-22 Thread Simon Cozens
[EMAIL PROTECTED] (Jonathan Scott Duff) writes: Why can't perl be smart enough to figure out what we mean? We're talking about lists, the second most fundamental data structure in the language. If we have to resort to much magic to get these right, we're pretty much doomed from the outset. --

Re: Regex query

2002-09-22 Thread Simon Cozens
[EMAIL PROTECTED] (Smylers) writes: Does that matter? This example is fairly contrived, and anybody actually concerned about this can always use: $num = @massive.length; I'd be in favour of forcing people to say this if they want the length of the array. But then, it might be that what

Re: Regex query

2002-09-22 Thread Pixel
Chip Salzenberg [EMAIL PROTECTED] writes: According to David Whipp: (7,8,9) == 3 # true (7,8) == 2 # true (7) == 1 # false () == 0 # true? Hell, yes, why didn't I think of that? This is exactly the same problem that afflicts Python's tuple syntax! various 1-uple

( .... ) vs { .... }

2002-09-22 Thread Me
In several forms of courier, and some other text fonts I view code in, I find it hard to visually distinguish the pattern element: ( ... ) from: { ... } What about replacing the former syntax with: ? ... ? -- ralph

Backtracking syntax

2002-09-22 Thread Me
Backtracking syntax includes: :, ::, :::, commit, cut I like the way the ':' looks in patterns. But I noticed I have several niggles about a number of other aspects of the above syntax. All the niggles are minor, individually, but they added up to enough that I thought I'd see what the

Re: Backtracking syntax

2002-09-22 Thread Simon Cozens
[EMAIL PROTECTED] (Me) writes: 1. It's nice how the ':', '::', and ':::' progression indicates progressively wider scope. But I would be surprised if newbies don't say to themselves, now just how wide a scope am I backtracking when there's three colons?. Why would newbies be writing

Re: Backtracking syntax

2002-09-22 Thread Me
[EMAIL PROTECTED] (Me) writes: 1. It's nice how the ':', '::', and ':::' progression indicates progressively wider scope. But I would be surprised if newbies don't say to themselves, now just how wide a scope am I backtracking when there's three colons?. Why would newbies be writing

Re: Backtracking syntax

2002-09-22 Thread Markus Laire
Backtracking syntax includes: :, ::, :::, commit, cut 1. It's nice how the ':', '::', and ':::' progression indicates progressively wider scope. But I would be surprised if newbies don't say to themselves, now just how wide a scope am I backtracking when there's three colons?. What

Re: Backtracking syntax

2002-09-22 Thread Simon Cozens
[EMAIL PROTECTED] (Markus Laire) writes: While commit and cut don't follow same syntax, I don't really see any better solutions. commit is sufficiently hard that it musn't be confused with the colon series. I wonder if might be usefull instead of commit with proper

Re: Backtracking syntax

2002-09-22 Thread Markus Laire
On 22 Sep 2002 at 21:06, Simon Cozens wrote: [EMAIL PROTECTED] (Markus Laire) writes: While commit and cut don't follow same syntax, I don't really see any better solutions. commit is sufficiently hard that it musn't be confused with the colon series. Yes, I didn't think that enough.

Re: Regex query

2002-09-22 Thread Dan Sugalski
At 10:52 AM -0500 9/21/02, Jonathan Scott Duff wrote: So, you expect 7.pow(2) to work? I'd expect it to be an error (this isn't python after all). Sure, why not? I mean, we already use methods on integers all the time--what do you thin 12.5 is anyway, other than calling the 5 method on the

Re: Regex query

2002-09-22 Thread Simon Cozens
[EMAIL PROTECTED] (Markus Laire) writes: How do you do C ($a + $b) * $c if parentheses are forbidden for mathematical expressions? I thought that , was actually the list constructor, much as = is the pair constructor. (And hence a = 1, b = 2 would be a list of pairs.) Of course,

Re: Regex query

2002-09-22 Thread John Williams
On Sat, 21 Sep 2002, Jonathan Scott Duff wrote: Why can't perl be smart enough to figure out what we mean? Something along these lines: (7) # list context (3+4) # numeric context (there's a numeric operator in there) (3+4,5) # list context (comma trumps the numeric

Re: Backtracking syntax

2002-09-22 Thread Steve Fink
On Sun, Sep 22, 2002 at 01:39:29PM -0500, Me wrote: So, how about something like: : # lock in current atom, ie as now :] # lock in surrounding group, currently :: : # lock in surrounding rule, currently ::: :/ # lock in top level rule,

Re: Regex query

2002-09-22 Thread Chip Salzenberg
According to John Williams: On Sat, 21 Sep 2002, Jonathan Scott Duff wrote: (7,) is an abomination. It's one of python's misfeatures that annoys me the most. Of course, _requiring_ the comma is bad [...] Well, I don't know about Jonathan, but requiring the comma is exactly what Python