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reads/readf into structures with explicit format [message #79021]

Tue, 24 January 2012 15:59

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

I was trying to parse a text file into an array of structures, using
an explicit format, and found that to make it work as I expected, I
had to encapsulate the whole format in extra parentheses:

[520]> lines=['a 0 9','b 1 3']
[521]> s=replicate({a:'-',b:-1,c:-1},2)
[522]> reads,lines,s,format='(A1,2(1X,I1))'
% READS: End of input data encountered: LINES
% Execution halted at: $MAIN$
[523]> print,s
{ a 0 9}{ 0 0 -1}
[524]> reads,lines,s,format='((A1,2(1X,I1)))'
[525]> print,s
{ a 0 9}{ b 1 3}

A corresponding difference happens using print with explicit format.

I was not aware that the extra parentheses would make a difference. Is
this how it is supposed to work, or is this a bug?

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