dart - 检查一个列表是否包含另一个列表的一个或多个值

Question

我们如何在Dart中做到这一点:

List<String> text= ["This", "is", "very", "nice"];

List<String> search1= ["This"]; 
List<String> search2= ["very", "is"]; 
List<String> search3= ["This", "is", "great"]; 

print(text.contains(search1)); // true
print(text.contains(search2)); // true
print(text.contains(search3)); // false

由于上述代码的结果始终为“false”:
https://dartpad.dartlang.org/73f7c386cbb7246c617712c390d4dbb1？

Answer 1

您可以使用Set.intersection()

List<String> text = ["This", "is", "very", "nice"];

List<String> search1 = ["This"];
List<String> search2 = ["very", "is"];
List<String> search3 = ["This", "is", "great"];

print(text.toSet().intersection(search1.toSet()).length == search1.length); // true
print(text.toSet().intersection(search2.toSet()).length == search2.length); // true
print(text.toSet().intersection(search3.toSet()).length == search3.length); // false