You can use underscores with decimal, hexadecimal, octal and binary numbers. You can also place them wherever you want, for convenient viewing of the data in question. They don't have to be a direct replacement of commas: both 50_00_00 and 500_000 are valid representations of 500,000; although, the first one is probably a poor choice because it's likely to be confusing.

Here's some highly contrived examples (purely to demonstrate those points): 

$ perl -E 'say 1_6'
16
$ perl -E 'say 0x1_0'
16
$ perl -E 'say 02_0'
16
$ perl -E 'say 0b1_00_00'
16

[download]

See "perldata: Scalar value constructors" for details.

— Ken

In reply to Re^3: Printing to stdout an array of strings and scalar references by kcott
in thread Printing to stdout an array of strings and scalar references by Anonymous Monk

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