Yet again, it's all about context:

my @lines1 = split(' ', @lines);

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split expects a regexp and a string as arguments, which are both scalars. @lines is evaluated in scalar context, returning the number of elements it contains. So, split has nothing to split, and returns the number of elements to be assigned to @lines1.

In reply to Re^3: map split vs array split by FunkyMonk
in thread map split vs array split by convenientstore

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