Stats

  • Locked Locked
  • Replies 4
  • Subscribers 143
  • Views 18021
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Remove double quotes from each element of list A

Leonardo Vinci

I have a list(say, A), of 300 elements like below: 

A=( 

("a" "b")

("c" "d")

("e" "f")

("g" "h")

...

...

...

)

Like above, i have 300 elements, where 1st element is ("a" "b"). 

I want to create a list A without ""(double quotes), like shown below: 

A=( 

(a b)

(c d)

(e f)

(g h)

...

...

...

)

How can i do this? 

Thanks,

LEO

 

  • Leo,

    Assuming you really want to convert them all to symbols (not sure why you need to do that, but assume you have a good reason), you'd do:

    foreach(mapcar sublist A mapcar('stringToSymbol sublist))

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew, 

    i don't understand how it works, 1st mapcar requires two parameters right? 

    i understand this:

    foreach(sublist A mapcar('stringToSymbol sublist))

    that is, for each sublist in A, do mapcar.  


    But i dont what you have done. 

  • in reply to Leonardo Vinci

    If you do an ordinary foreach, it will iterate over the outer list, but the return value will just be the original list, and the inner mapcar results will get lost. The foreach function allows the name of a mapping function to be passed as the first argument before the loop variable, and in essence it's a convenient (to some people more readable) version of:

    mapcar(lambda((sublist) mapcar('stringToSymbol sublist)) A)

    In essence that's what it gets converted to - an anonymous function (lambda) is constructed from the loop variable and the body of the foreach, and then this lambda is applied to each element in the list A; the inner mapcar is then applied to each sublist to do the actual conversion from strings to symbols.

    Is that clearer?

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Yes, i understood the other way of writing, which you wrote. Thanks! :-)

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.