Perl：$ hashName {“ a”，“ b”，“ c”} =“ d”;是什么意思？

Question

我正在尝试将大型perl程序转换为Java。在初始化函数中，它使用括号创建哈希，然后开始分配值。但是随后，这些密钥变成了一对和三组，以逗号分隔的字符串。什么意思？

 %par=( ...  )

 $par{"symbolChainAny"}=     "*";   # chain name if ...
 $par{"acc2Thresh"}=         16;    # threshold for...
 $par{"txt","copyright"}=       "elided";
 $par{"txt","contactEmail"}=    "elided";

 $par{"txt","modepred","sec"}=  "prediction of secondary structure";
 $par{"txt","modepred","cap"}=  "prediction of secondary structure caps";```

Answer 1

$foo{join($;, $x, $y, $z)}

等同于

$;

其中"\x1C"默认为控制字符（$ diff \ <( perl -MO=Concise,-exec -e'$foo{$x,$y,$z}' 2>&1 ) \ <( perl -MO=Concise,-exec -e'$foo{join($;,$x,$y,$z)}' 2>&1 ) \ && echo identical identical ）。

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