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Learning Perl on Win32 Systems

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Arrays and List Data
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3.6 <STDIN> as an Array

One previously seen operation that returns a different value in a list context is <STDIN>. As described earlier, <STDIN> returns the next line of input in a scalar context. However, in a list context, it returns all of the remaining lines up to the end-of-file. Each line is returned as a separate element of the list. For example:

@a = <STDIN>; # read standard input in a list context

If the person running the program types three lines, then hits CTRL-Z (to indicate end-of-file), the array ends up with three elements. Each element will be a string that ends in a newline, corresponding to the three newline-terminated lines entered.

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3.5 Scalar and List ContextBook Index3.7 Variable Interpolation of Arrays