Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
> As for the second decorator, sure test(lambda a: print("You are in block %s" % a)) will work,

not for me...

lanx@nc10-ubuntu:~$ python Python 2.5.2 (r252:60911, Jan 20 2010, 23:16:55) [GCC 4.3.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> def rubyyielder(gen): ... def wrapped_gen(block): ... for elem in gen(): ... block(elem) ... return wrapped_gen ... >>> @rubyyielder ... def test(): ... print("In test") ... yield 1 ... print("back in test") ... yield 2 ... >>> test(lambda a: print("You are in block %s" % a)) File "<stdin>", line 1 test(lambda a: print("You are in block %s" % a)) ^ SyntaxError: invalid syntax

I suppose the lamda syntax has more restrictions...

> If you used a non-keyword such as "send" instead of "yield" you could do Evil and avoid the first decorator. This is left as an exercise.

Simple, I can just port the semantic of my OP and let send execute the callback which is passed to @test.น

Cheers Rolf

( addicted to the Perl Programming Language)

Update

น) at second thought this would require a possibility to access the arguments of the caller. I suppose the caller is an object where arguments are accessible.

Update

deleted undiplomatic irony =)


In reply to Re^10: RFC: Simulating Ruby's "yield" and "blocks" in Perl (Python) by LanX
in thread RFC: Simulating Ruby's "yield" and "blocks" in Perl by LanX

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others musing on the Monastery: (3)
As of 2024-04-20 08:03 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found