c# - 如何从字符串类型数组中删除整数?
问题描述
我有一个字符串类型的数组,其中包含数字和字符,例如 string[] TagsSeperatedArray={"tag1","tag2","1234",""} 我想从数组中删除 1234 和 "" 。我怎样才能做到这一点。有人可以帮帮我吗。我正在使用 asp.net c#。
foreach(var item in TagsSeperatedArray)
{
if()
{
}
}
解决方案
一种方法是:
var arr = new[] { "tag1", "tag2", "1234", "" };
Console.WriteLine(string.Join(",", arr)); // tag1,tag2,1234,
var newArr = arr.Where(value => !string.IsNullOrWhiteSpace(value)
&& !int.TryParse(value, out _)).ToArray();
Console.WriteLine(string.Join(",", newArr)); // tag1,tag2
但是请注意,这会分配一个额外的数组等;使用列表会更有效,因为您可以直接删除:
var list = new List<string> { "tag1", "tag2", "1234", "" };
Console.WriteLine(string.Join(",", list)); // tag1,tag2,1234,
list.RemoveAll(value => string.IsNullOrWhiteSpace(value) || int.TryParse(value, out _));
Console.WriteLine(string.Join(",", list)); // tag1,tag2
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