You may sort and then check if "@arr1" eq "@arr2", which is not bullet-proof, but could be suitable for your needs, especially if you set $" accordingly. This still involves more than one statement, well, unless you like a horrible hack like

"@{[sort @arr1]}" eq "@{[sort @arr2]}";
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Otherwise, whatever method you really use behind the scenes, who prevents you from wrapping it in a Compare() sub?