`+': no implicit conversion of Integer into String (TypeError)

Question

Getting this error:

(`+': no implicit conversion of Integer into String (TypeError))

This is the line calling it:

print "\tsize "+(package["size"] == nil ? "" : package["size"])+"\n";

package["size"] is an Integer. Change it to package["size"].to_s or use string interpolation. — anothermh
– anothermh, Commented Aug 18, 2020 at 22:11

Kumar · Accepted Answer · 2020-08-19 21:21:10Z

2

When package["size"] is not nil, its returning and integer and you're trying to concatenate it into a string, and its not doing implicite typcasting of values

Here are a few ways you can get it to work

Solution 1.

"\tsize " + package['size'].to_s + "\n";

Solution 2.

"\tsize #{package['size'].to_s}\n";

edited Aug 19, 2020 at 21:21

answered Aug 18, 2020 at 22:11

Kumar

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2 Comments

fidato Over a year ago

@Kumar - why not use "\tsize " + (package['size']).to_s + "\n" directly?

Sergio Tulentsev Over a year ago

In solution 2, no need to use .to_s, it's implicit.

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