Writing a list to txt-file

[thomas.schive]

Hello!

So - I have a list made by appending a wild card conditions from another:

(foreach x ListA

(if  (wcmatch x "111*")

(setq ListB (append (ListA (list x)))

))

However, I would like my ListB to be written to a txt file! I have experimented with:

(mapcar (function (lambda ...

to place (princ)'s in order to create space shifts in a txt document. 

... But it does not seem to work properly ... 

Is there a way to take ListB's content and write it to a txt-file?

[john.uhden]

Try (vl-princ-to-string B)

Though you will lose some precision of any reals in the list(s).

[CodeDing · Accepted solution]

@thomas.schive ,

You could write your entire list to the text file with vl-prin1-to-string then use the READ function to store it as a variable again. Is this what you're looking for?

.....
(setq fName "c:\\users\\myName\\myFolder\\myFile.txt")
(setq f (open fName "w"))
(write-line (vl-prin1-to-string ListB) f)
(close f)
.....
(setq f (open fName "r"))
(setq str (read-line f))
(close f)
(setq ListB (read str))
.....

Best,

~DD

[ВeekeeCZ]

What do you mean by "space shift"?

Would you give us an example of lista and desired txt file outcome?