Account Options

  1. Sign in
The old Google Groups will be going away soon, but your browser is incompatible with the new version.
Google Groups Home
« Groups Home
lepl
Home
+ new post
About this group
Join this group
Drop(...)[1] doesn't drop?
Options
There are currently too many topics in this group that display first. To make this topic appear first, remove this option from another topic.
There was an error processing your request. Please try again.
flag
   5 messages - Collapse all  -  Translate all to Translated (View all originals)
The group you are posting to is a Usenet group. Messages posted to this group will make your email address visible to anyone on the Internet.
Your reply message has not been sent.
Your post was successful
 
From:
To:
Cc:
Followup To:
Add Cc | Add Followup-to | Edit Subject
Subject:
Validation:
For verification purposes please type the characters you see in the picture below or the numbers you hear by clicking the accessibility icon. Listen and type the numbers you hear
 
jazg  
View profile  
 More options May 19 2010, 4:56 pm
From: jazg <tazg2...@gmail.com>
Date: Wed, 19 May 2010 13:56:22 -0700 (PDT)
Local: Wed, May 19 2010 4:56 pm
Subject: [LEPL] Drop(...)[1] doesn't drop?
Print | Individual message | Show original | Report this message | Find messages by this author
  >>> xy = "x" & Drop("y")
  >>> xy[1].parse("xy")
  ['xy']
  >>> xy[:1].parse("xy")
  ['xy']
  >>> xy[1:].parse("xy")
  ['x']
  >>> xy[:2].parse("xyxy")
  ['x', 'x']

Why are the first 2 results ["xy"] and not ["x"]? It seems Drop is
ignored with [1] or [0:1] but works with any other type of repeat.

--
You received this message because you are subscribed to the Google Groups "lepl" group.
To post to this group, send email to lepl@googlegroups.com.
To unsubscribe from this group, send email to lepl+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lepl?hl=en.


 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
andrew cooke  
View profile  
 More options May 19 2010, 5:26 pm
From: andrew cooke <and...@acooke.org>
Date: Wed, 19 May 2010 17:26:32 -0400
Local: Wed, May 19 2010 5:26 pm
Subject: Re: [LEPL] Drop(...)[1] doesn't drop?
Print | Individual message | Show original | Report this message | Find messages by this author

That's a bug!  Just playing around it seems to be in the Repeat matcher (ie
it's not a rewrite problem, which is where you'd expect most bugs).
Unfortunately that means there's no obvious workaround.

Hmmm.  However, this appears to work OK?

  xy = ('x' & Drop('y')) & Empty()

which might be enough to keep you going?

Sorry - I'll fix it, but I'm afraid it will likely be tomorrow (going out
tonight).

Thanks,
Andrew

--
You received this message because you are subscribed to the Google Groups "lepl" group.
To post to this group, send email to lepl@googlegroups.com.
To unsubscribe from this group, send email to lepl+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lepl?hl=en.

 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
andrew cooke  
View profile  
 More options May 19 2010, 9:03 pm
From: andrew cooke <and...@acooke.org>
Date: Wed, 19 May 2010 21:03:34 -0400
Local: Wed, May 19 2010 9:03 pm
Subject: Re: [LEPL] Drop(...)[1] doesn't drop?
Print | Individual message | Show original | Report this message | Find messages by this author

I was wrong - this *is* a rewriter bug (which makes much more sense).

So you can fix it by using .config.no_compile_to_regexp():

>>> xy = ('x' & Drop('y'))[1]
>>> xy.parse('xy')
[u'xy']
>>> xy = ('x' & Drop('y'))[1]
>>> xy.config.no_compile_to_regexp()

<lepl.core.config.ConfigBuilder object at 0xbc9c90>
>>> xy.parse('xy')

['x']

Andrew

--
You received this message because you are subscribed to the Google Groups "lepl" group.
To post to this group, send email to lepl@googlegroups.com.
To unsubscribe from this group, send email to lepl+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lepl?hl=en.

 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
andrew cooke  
View profile  
 More options May 20 2010, 7:59 pm
From: andrew cooke <and...@acooke.org>
Date: Thu, 20 May 2010 19:59:35 -0400
Local: Thurs, May 20 2010 7:59 pm
Subject: Re: [LEPL] Drop(...)[1] doesn't drop?
Print | Individual message | Show original | Report this message | Find messages by this author

There's a fix now in hg:

  hg clone -r 6929d709a6 https://lepl.googlecode.com/hg/ lepl

should get you the right code.

I'll do a minor release very soon (probably tomorrow).

Thanks again for the bug report,
Andrew

--
You received this message because you are subscribed to the Google Groups "lepl" group.
To post to this group, send email to lepl@googlegroups.com.
To unsubscribe from this group, send email to lepl+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lepl?hl=en.

 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
Discussion subject changed to "4.2.2 Released" by andrew cooke
andrew cooke  
View profile  
 More options May 20 2010, 8:50 pm
From: andrew cooke <and...@acooke.org>
Date: Thu, 20 May 2010 20:50:26 -0400
Local: Thurs, May 20 2010 8:50 pm
Subject: [LEPL] 4.2.2 Released
Print | Individual message | Show original | Report this message | Find messages by this author

Released as 4.2.2  Andrew

--
You received this message because you are subscribed to the Google Groups "lepl" group.
To post to this group, send email to lepl@googlegroups.com.
To unsubscribe from this group, send email to lepl+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lepl?hl=en.

 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
End of messages
« Back to Discussions « Newer topic     Older topic »

Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
©2013 Google