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Chapter 3 main example hyper operator #47

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jeteve opened this Issue · 1 comment

2 participants

@jeteve
Collaborator

I'm going through the book using rakudo star - jab 2011, and in chapter 3, there's the following issue:

The code in the book says:

 my $label-area-width = 1 + [max] @scores».key».chars;

The '>>' after key causes the label_area_width to be too big, so I think it should be

 my $label-area-width = 1 + [max] @scores».key.chars;

Is it right?

@moritz
Owner

The example in there produces the output

Ana     XXXXXXXXXXXXXXXXXXXXXX
Dave    XXXXXXXXXXXXXXXX
Charlie XXXXXXXXXXX
Beth    XXXXXXXXXXX

for me, which looks correct (when viewed with a monospace font).

What output did you expect? or why did think that $label-area-width is too big?

Also the code itself looks correct me -- with the >> it calculates the max of the lengths of all keys, without it it would interpreter the list of keys as a string (thus joining it with a space), and calculating its length, then taking the max of one value. NOt very good.

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