toEqualityComparerSafe

Returns a value as equality comparer.

An equality comparer has the following structure:

JavaScript

function (x, y) : boolean

Examples

JavaScript

// x == y
var comparer1 = Enumerable.toEqualityComparerSafe();

// from Lambda
var comparer2 = Enumerable.toEqualityComparerSafe('(x, y) => x === y');

// from function
var comparer3 = Enumerable.toEqualityComparerSafe(function(x, y) {
    return x === y;
});

// same as: x === y
var comparer4 = Enumerable.toEqualityComparerSafe(true);

// THROWS EXCEPTION
Enumerable.toEqualityComparerSafe('test');