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Function references

Function references - Perl Tutorial

From the course: Perl 5 Essential Training

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Function references

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- [Voiceover] Perl also supports function references which may not be as common as array or hash references but they can be useful for a number of purposes. Here's a working copy of func.ref.pl from Chapter 11 of the Exercise Files. And you notice that I have a function that I've defined down here, starting on Line 10, and here on Line 7, I'm taking a reference to that function, and so there's the name of the function, and this ampersand indicates that that symbol is a function symbol, just like the percent sign indicates a hash or the at sign indicates an array. And then I take the reference with the reference operator and I assign it to the reference scaler. And now I call it, again I'm using that ampersand, and the curly braces are around the reference itself. And the parentheses, which is the function call operator. And so when I run this, you see I get the result, "This is the excellent function." So it's calling the function through the reference. Okay, so that much probably…

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