Re: How to find number of elements of an array from array reference

Finding number of elements in an array from array reference, you can get it by different ways like,

1. As moritz said, use the array in scalar context like

my $asdad = @$reee; #outpur 3

2. or, you can use scalar like,

my $asdad = scalar(@$reee); #outpur 3

3. or, you can use int like

my $asdad = int(@$reee); #outpur 3

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Re^2: How to find number of elements of an array from array reference by chromatic (Archbishop) on Apr 07, 2011 at 17:30 UTC
... or, you can use scalar... Why? Scalar assignment always imposes scalar context. ... you can use int like... Why? Scalar assignment always imposes scalar context, and an array in scalar context always evaluates to an integer. Make it easy on yourself!	[reply]
Re^3: How to find number of elements of an array from array reference by jpl (Monk) on Apr 07, 2011 at 18:02 UTC
Why? Scalar assignment always imposes scalar context. Perhaps the OP didn't want to do an assignment. Contrast `@a = ( 42 ); printf("%d\n", @a); # prints 42 printf("%d\n", scalar(@a)); # prints 1` [download] I find it is seldom necessary to use scalar(), since I'm more likely to do assignment or conditional testing, where scalar context is implied. But scalar() has its place when the default is list context.	[reply] [d/l]
Re^4: How to find number of elements of an array from array reference by chromatic (Archbishop) on Apr 07, 2011 at 21:41 UTC
I prefer `0 + @a` in that case, to be explicit about numeric scalar context, but point taken.	[reply] [d/l]


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