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WRITEPRN inside a conditional clause

WRITEPRN inside a conditional clause

WRITEPRN inside a conditional clause


How can I write a text file with a matrix only when a condition is true?
The problem I encountered is that you cannot use the := assignment inside an if-clause. Instead you've got the <-- (arrow - local assignment), which is unfortunately not working with WRITEPRN.

To sum up, I would like to do sth like this:
if(a, (WRITEPRN(filename) <-- data), 0)

I will accept any working solution. Even not using this very pattern.

Thank you in advance,

RE: WRITEPRN inside a conditional clause


if(a, WRITEPRN(filename, data), 0)

RE: WRITEPRN inside a conditional clause

Thank you very much for all your responses, it helped me a lot.

However, this works only when WRITEPRN is the returned value.
In my case the above conditional is part of a function.

For ex:

mywrite(filename, data) = | //do-something-before-write
                                            | WRITEPRN(filename, data)
                                            | return 1

the above does not work, but it does without the "return 1" line.

So my last question is: can we, anyhow, return something else then just the WRITEPRN function result?

Thank you once again for all your replies.

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