Re^3: dynamic 2d array

[amarquis]

in reply to Re^2: dynamic 2d array
in thread dynamic 2d array

Depends on how you define it. The text is talking about global variables, which are available to code outside their containing block:

{ 
    $i = 3;
}

print "$i\n";

Prints 3. Compare with:

{ 
    my $i = 3;
}

print "$i\n";

Without strict, this prints only a newline. This code declares a lexically scoped $i, which only persists through the end of its enclosing block. One of the best things about strict/warnings is that perl will complain about this kind of thing, possibly saving you a bunch of time hunting down a confusing error in a large program.