Robustly get the length of a Typed Array, or false if it is not a Typed Array. Works cross-realm, in every engine, even if the length property is overridden.

*apologize for the 'wide' post*I'm a perl newbie, and I'm having a little trouble with multidimensional arrays in perl.I'm a Bioinformaticist grad student, and I'm coding a simple DNA -> Protein ...

is-array-of-length Returns true if a value is an array containing the specified number of elements.