我如何检查是否一个Perl数组包含一个特定的值？
我试图找出检查数组中的一个值的存在，而不通过遍历数组的一种方式。
I am trying to figure out a way of checking for the existence of a value in an array without iterating through the array.
我读了一个参数的文件。我有一个参数一长串我不想去处理。我把这些多余的参数数组中的 @badparams 。
I am reading a file for a parameter. I have a long list of parameters I do not want to deal with. I placed these unwanted parameters in an array @badparams.
我想读一个新的参数，如果它不 @badparams 存在，处理它。如果它在 @badparams 存在，请转到下一个读。
I want to read a new parameter and if it does not exist in @badparams, process it. If it does exist in @badparams, go to the next read.
只需打开数组的哈希：
my %params = map { $_ => 1 } @badparams;
if(exists($params{$someparam})) { ... }
您还可以添加更多的（唯一的）PARAMS到列表：
You can also add more (unique) params to the list:
$params{$newparam} = 1;
和后来得到（唯一）的列表PARAMS回：
And later get a list of (unique) params back:
@badparams = keys %params;