月 の 上

配列ぐぬぬ

はじめてのPerlよんでる
コンテキストわからぬ……


サンプルコードを少し変更して色々やって見てる

$fred[0] = "yabba";
$fred[1] = "dabba";
$fred[2] = "doo";

print "\@fred[0]: " . @fred[0] . "\n";
print "\$fred[0]: " . $fred[0] . "\n";

結果

@fred[0]: yabba
$fred[0]: yabba


もう一丁

print "\$fred: $fred\n";
$len = @fred;
print "\$len = \@fred: $len\n";

結果

$fred: 
$len = @fred: 3


さらにもう一丁

print "embedded: @fred \n";
print "\@fred: " . @fred . "\n";
print "scalar \@fred: " . scalar @fred . "\n";
print "\@{ \@fred }: " . @{ @fred } . "\n";

結果

embedded: yabba dabba doo 
@fred: 3
scalar @fred: 3
@{ @fred }: 0


わけわからん……


ちなみに最初の宣言に "my" つけると

syntax error at fred.pl line 1, near "$fred["
syntax error at fred.pl line 2, near "$fred["
syntax error at fred.pl line 3, near "$fred["

怒られる……