Let's talk about golang array type conversion

Go language is a statically typed language, and arrays are a special data type in Go language. The length of the array is fixed and cannot be changed, so array type conversion requires special attention in the Go language.

In the Go language, there are two methods for converting array types: forced type conversion and copy type conversion.

1. Forced type conversion

Forced type conversion refers to converting one data type to another data type, and the precision or range of the original data type may be lost during the conversion process. In the Go language, array type coercion can be achieved in the following ways:

var arr1 [5]int = [5]int{1, 2, 3, 4, 5}

var arr2 [5]float64

for i := 0; i < len(arr1); i++ {

    arr2[i] = float64(arr1[i])

}

This code coerces an integer array into a floating-point array. What needs to be noted in forced type conversion is that the converted array type and the original array type must have the same dimensions and length, otherwise a compilation error will occur.

2. Copy type conversion

Copy type conversion refers to copying data of one array type to another array type. In the Go language, copy type conversion of array types can be achieved in the following ways:

var arr1 [5]int = [5]int{1, 2, 3, 4, 5}

var arr2 [5]float64

for i, v := range arr1 {

    arr2[i] = float64(v)

}

fmt.Println(arr2)

This code copies an integer array to a floating-point array. What needs to be noted when copying type conversion is that the converted array type and the original array type can have different dimensions and lengths, but it must be ensured that the type and value range of the elements in the array before conversion are suitable for the type and value range of the converted array.

Summary

Array type conversion in Go language requires special attention to the length and precision range of the array. Both forced type conversion and copy type conversion can achieve array type conversion, but you need to consider the dimensions and length of the converted array type, and whether the numerical range is suitable. In actual development, the appropriate array type conversion method should be selected based on the actual situation.

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