Operations applied to type values

php editor Banana carefully brings you an introduction to "Operations applied to type values". In programming, we often need to operate on different types of values, such as string concatenation, array merging, etc. Mastering the correct operation method can not only improve the efficiency of the code, but also avoid errors. This article will introduce in detail the techniques and precautions for operations applied to type values ​​in PHP from many aspects. I hope it can help everyone better understand and apply these operations and improve their programming abilities.

Question content

As mentioned in the go specification:

"A type determines a set of values ​​and the operations and methods specific to those values."

Introduce an operation or method to be applied to values ​​ of type ,

Should the operation applied to a value (taken from a group) give a result (or value) from the same group?

For example, in the following code, findname() should not be a method on the user type. Instead, findname() should be a helper function.

type user struct {
    name  string
    email string
    age   int
}

func (u user) findElder(other user) user {
    if u.age >= other.age {
        return u
    }

    return other
}

func (u user) findName() string {
    return u.name
}

Workaround

"Operations and methods specific to these values" does not mean that they are unique to these values, nor does it mean that they results in values.

According to Google, "specific" means "clearly defined or determined." In this quote from the Go specification, the word "specific" is used to illustrate that Go is strongly typed, which means that operations and methods work on the types they define or identify.

For example, == operator specifies for integer types, therefore, == operator specific for The value of int, int32, uint8, etc.

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