NAME
Catmandu::Fix::copy_field - copy the value of one field to a new field
SYNOPSIS
# Copy the values of foo.bar into bar.foo
copy_field('foo.bar','bar.foo');
Catmandu::Fix::copy_field - copy the value of one field to a new field
# Copy the values of foo.bar into bar.foo
copy_field('foo.bar','bar.foo');