CODEWITHSUNDEEP
c#linq
user10848771
user10848771

Reputation:

How make condition the elements in two arrays, Linq c#

How compare elements in different arrays or make how make block if ()?

if string[] data = { "a", "b" }; that's array which have the info.

the string[] b = { "a" }; - checking array.

I must to check have array b the element which have the data array.

if in b all element tha same like in data i do something....

if string[] c = { "a", "b", "c", "d" }; - don't the same, because data don't have "c" and "d"

I try to use Intersect().Any() in block if it doesn't work in case array c because Any find first rigth element

Upvotes: 0

Views: 122

Answers (2)

vc 74
vc 74

Reputation: 38179

If data is used only to do lookups, you can use a HashSet instead:

HashSet<string> data = new HashSet<string>() { "a", "b" };

if (b.All(data.Contains))
{
    // All the strings in b are in data
}

Otherwise you can use Except as suggested by @mjwills:

if (!b.Except(data).Any())
{
    // All the strings in b are in data
}

Upvotes: 0

Tim Schmelter
Tim Schmelter

Reputation: 460288

You can use !Except + Any:

bool containsAll = !data.Except(yourArray).Any();

or probably less efficient with large arrays but maybe little bit more readable:

bool containsAll = data.All(yourArray.Contains);

Upvotes: 1

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