INDEXED ARRAYS ON C?

entropia has asked for the wisdom of the Perl Monks concerning the following question:

Hello, i have a program in perl that is a little slow that uses indexed arrays like this:

undef %index_array;
$index_array["hola"]="mundo";
$index_array["hello"] = "world";
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does someone traslade a indexed array to c language, i can´t.

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Re: INDEXED ARRAYS ON C? by Zaxo (Archbishop) on Feb 11, 2002 at 10:58 UTC
You need to use curlies for that. The type you are using is called a hash. Perl arrays use square braces, but require integers to index them, just as C does. `$index_hash{"hola"}="mundo"; $index_hash{"hello"} = "world";` There is no corresponding type in C, though C++ std::map is close. Please take a few minutes to look at the Perl Monks Site FAQ, you'll find out how to format your questions more effectively. Code tags are good to know about. After Compline, Zaxo	[reply] [d/l]
Re: INDEXED ARRAYS ON C? by derby (Abbot) on Feb 11, 2002 at 11:35 UTC
entropia, In addition to what Zaxo tells you, you could also do a freshmeat search for "hash." Just a quick vocabulary session - an indexed array is that data structure which is directly accessed by its position within the array (by an integer - array[0] array[1] etc). an associatve array, or hash or key-value pair, is that data structure which is directly (or indirectly but definetly position independent) accessed by its "key" (by a string - hash{"monks"}). If you go the freshmeat route, search for "hash" be sure to seperate the hash algorithm stuff (MD5, SHA-1, shash, etc) from the hash data structure stuff (glibc, libdict, ght, etc) - they're slightly related but different beasties. -derby	[reply]