keys

public string[] keys()

public string[] keys(T value)

public string[] keys(T[] values)

public string[] keys(bool(T value) policy)

An array of the dictionary's keys.

An array of matching keys containing the specified value.

An array of matching keys containing the specified values.

An array of matching keys according to the filter policy.

Parameters

value

The value to search for in the dictionary's key-value pairs.

Parameters

values

The values to search for in the dictionary's key-value pairs.

Parameters

policy

The filter policy. Return true to specify a match and false otherwise.

Returns all the keys of the dictionary in an array.

Returns the keys of the dictionary matching the specified value.

Returns the keys of the dictionary matching the specified values.

Returns the keys of the dictionary matching the specified value according to the filter policy.

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import System;   Dictionary<int> empty = {}; Dictionary<int> notEmpty = { a: 10, b: 11, c: 12 };   Console.log(empty.keys());    // [] Console.log(notEmpty.keys()); // [ "a", "b", "c" ]

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import System;   Dictionary<bool> enabled = { "server1": true, "server2": false, "server3": true };   Console.log(enabled.keys(true).sort()); // [ "server1", "server3" ]

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import System;   Dictionary<int> counts = { "eggs": 1, "fish": 2, "milk": 0 };   Console.log(counts.keys([ 1, 2 ]).sort()); // [ "eggs", "fish" ]

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import System;   Dictionary<int> counts = { "eggs": 1, "fish": 2, "milk": 0 };   Console.log(counts.keys(bool(int count) { return count > 0; }).sort()); // [ "eggs", "fish" ]