Re^3: Label makes a sub to return empty list -- "secret"? documented?

Sometimes, I prefer to invert the numbers to get the time saved to put things into perspective.

27367269 calls/s = 37 ns/call
31367629 calls/s = 32 ns/call
35161744 calls/s = 28 ns/call
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So _: is 9 ns faster than return (assuming the numbers are meaningful).

After 100 million calls, you still wouldn't have saved a second by switching from return to _:.

Update: I had moved a decimal point in the wrong direction. Fixed.

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Re^4: Label makes a sub to return empty list -- "secret"? documented? by hippo (Archbishop) on Sep 13, 2025 at 09:26 UTC
27367269 calls/s = 0.365 ns/call I think your numbers are a couple of orders of magnitude out. By my maths 1 / 27367269 = 0.0000000365, so that's 36.5ns per call. Even so, your point is valid. It is only in extreme cases where any of this is really worth worrying about. 🦛	[reply]
Re^5: Label makes a sub to return empty list -- "secret"? documented? by ikegami (Patriarch) on Sep 13, 2025 at 14:48 UTC
The numbers seemed absurd, but I was too tired to register I needed to redo the math. I had moved a decimal point in the wrong direction. Fixed.	[reply]