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Convert a complex list to a string, and back

RVERP

Hello,

Since cdf can't handle list, the solution is to convert this to a string.

But how do you convert a list of this type to a string, and back??

example = list("example")

example->values = list("values")

example->values->num1 = "one"

example->values->num2 = '("t" "w" "o")

example->values->num3 = 3

example->char = list("char")

example->char->char1 = "A"

example->char->char2 = '("B" "C")

  • Hi,

    You can perhaps use buildString() and parseString() to convert a list of strings into a single string and vice-versa. The 'glue' or separation character is a single space by default but you can enter a different character, e.g. "," or "|" or something that will not be used in an entry value. Note that for buildString the list elements should all be strings, so values like 'num3' would cause an issue.  Also, I'm not sure I completely follow your example, but perhaps take a look at buildString() and parseString() to see if they fit your needs.

    Best regards,

    Lawrence.

  • in reply to skillUser

    Hi Lawrence,

    I can convert the list to a string, but converting it back to a list is a bit harder. The issues I have are:

    • How do I rebuild the nested lists?
    • For a list of this type, the are also elements with type symbol, how do rebuild those?

    The string I generate looks like this:

    "(|string example|symbol char|list (|string char|symbol char2|list (|string B|string C|)|symbol char1|string A|)|symbol values|list (|string values|symbol num3|fixnum num3|symbol num2|list (|string t|string w|string o|)|symbol num1|string one|)|)"

  • in reply to RVERP

    Use linereadstring to convert from string to list, and sprintf(stringOut "%L" theList) to convert back from a list to a string. Or something along those lines...

    Andrew.

  • in reply to Andrew Beckett

    Thanks Andrew, that did the trick.

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