Re: Re: Re: packing/unpacking/split/join confusion

[pfaut]

The first argument to split is a regex that describes the delimiters in the second argument. By specifying a space, you are telling split to break the string apart wherever it sees a space. So, split ' ',"A B C D" returns ('A','B','C','D'). If instead of space there were commas in your string, you could split ',',"A,B,C,D" instead. This would produce the same result.

---
print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';

[sauoq]

By specifying a space, you are telling split to break the string apart wherever it sees a space.

Almost. A literal space is a special case. It splits on whitespace like /\s+/ but it doesn't return a null field when there is leading whitespace. So, it is just like split with no arguments but it allows you to specify the variable instead of using $_.

-sauoq
"My two cents aren't worth a dime.";