For instance, if you convert a long value to an int, you may lose precision in the process. It’s essential to note that type casting can result in data loss if you’re converting a larger data type to a smaller data type. Finally, we print the values of num1 and num2.Īs you can see from the output, the type casting worked correctly, and num1 was converted to an int64 and assigned to num2. We use the cast operator to convert num1 to an int64 and assign the result to num2. In this example, we have two variables num1 and num2, where num1 is an int32, and num2 is an int64. Type assertion is used when you have an interface value and need to access its underlying type. Golang also supports type assertion, which is a mechanism for extracting the concrete type from an interface value. In this example, the integer value 5 is implicitly converted to a floating point before the addition is performed. var i int = 5 var f float32 = 3.14 var result = f + i For example, if you add an int and a float, Golang will automatically convert the int to a float before performing the addition. This type conversion occurs automatically during arithmetic operations on values of different data types. Golang does support implicit type conversion, which is also known as automatic type conversion. The resulting value is assigned to the variable i. In this code example, the float value 3.14 is explicitly converted to an integer using the cast operator int. For example, to convert a float number to an integer, you can use the following expression: var f float32 = 3.14 var i int = int (f) To use type casting in Golang, you need to specify the type you want to convert to using the cast operator which is denoted by the type name in parentheses before the variable or expression you want to convert. Golang supports several data types, including integers, floating points, and strings, among others. Therefore, type conversion is necessary when you need to perform operations on variables of different data types. In Golang, data types are explicitly defined and cannot be changed once they are declared. Golang supports implicit type conversion, which means that it can automatically convert one type to another if it is safe to do so. This conversion can be done automatically or explicitly by the programmer. Golang cast refers to the process of converting a value of one type to another type.
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