爲什麼我要用Devel :: Peek :: Dump得到兩個不同的結果?哈希鍵編碼:爲什麼我在這裏得到Devel :: Peek :: Dump兩種不同的結果?
#!/usr/bin/env perl
use warnings;
use 5.014;
use utf8;
binmode STDOUT, ':encoding(utf-8)';
use Devel::Peek;
my %hash1 = ('müller' => 1);
say Dump $_ for keys %hash1;
my %hash2;
$hash2{'müller'} = 1;
say Dump $_ for keys %hash2;
輸出:
SV = PV(0x753270) at 0x76d230
REFCNT = 2
FLAGS = (POK,pPOK,UTF8)
PV = 0x759750 "m\303\274ller"\0 [UTF8 "m\x{fc}ller"]
CUR = 7
LEN = 8
SV = PV(0x753270) at 0x7d75a8
REFCNT = 2
FLAGS = (POK,FAKE,READONLY,pPOK)
PV = 0x799110 "m\374ller"
CUR = 6
LEN = 0
是否確定來源有兩個密鑰完全一樣的字節? – Mat
這兩個'ü'都使用keyboad的'ü'鍵寫入。 –
順便說一句,'說轉儲...;'應該'轉儲......;'。 – ikegami