![]() ![]() Shift right example that results in different behavior on web Here’s an example of using each of the equality and relationalĪssert((value & bitmask) = 0x02) // ANDĪssert((value & ~bitmask) = 0x20) // AND NOTĪssert((value ^ bitmask) = 0x2d) // XORĪssert((value > 4) = 0x02) // Shift right (That’s right, operators such as = are methods that Return the result of invoking the = method on x with the argument y. If x or y is null, return true if both are null, and false if only ![]() Objects are the exact same object, use the identical()įunction instead.) Here’s how the = operator works: (In the rare case where you need to know whether two To test whether two objects x and y represent the same thing, use the The following table lists the meanings of equality and relational operators. Here are some examplesī = ++a // Increment a before b gets its value.ī = a++ // Increment a after b gets its value.ī = -a // Decrement a before b gets its value.ī = a- // Decrement a after b gets its value.Īssert(a != b) // -1 != 0 Equality and relational operators When you use operators, you create expressions. In the grammar defined in the Dart language specification. You can find the authoritative behavior of Dart’s operator relationships ![]() Is an approximation of the truth found in the language grammar. The notion of operator precedence and associativity The previous table should only be used as a helpful guide. expr ! expr ~ expr ++ expr - expr await expr You can implement many of these operators as class members. Which are an approximation of Dart’s operator relationships. The table shows Dart’s operator associativityĪnd operator precedence from highest to lowest, Dart supports the operators shown in the following table. ![]()
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