How to Elegantly Convert Float64 to Int in Go?

Converting Float64 to Int in Go: An Elegant Approach

When working with floating-point values in Go, the task of converting them to integers can arise. While the strconv package offers conversion between strings and various data types, it lacks direct conversion between non-string types.

Direct Conversion with Int Cast

One elegant solution is to use the int cast operator. It safely converts a float64 variable to the nearest integer representation. Consider the example below:

import "fmt"

func main() {
  var x float64 = 5.7
  var y int = int(x)
  fmt.Println(y) // outputs "5"
}

In this code, we create a float64 variable x with the value 5.7. The variable y is declared as an int and assigned the value of x using the int cast. The result shows that y holds the integer value 5, effectively truncating the fractional part of x.

Comparison with Sprintf

The int cast provides a direct and efficient method for converting float64 to int, eliminating the need for intermediate string conversions through fmt.Sprintf. This approach streamlines the conversion process and avoids potential data loss due to floating-point arithmetic limitations.

Conclusion

For convenient and accurate conversions from float64 to int in Go, the int cast operator emerges as the optimal choice. It offers a straightforward and efficient solution to this common data conversion task.

The above is the detailed content of How to Elegantly Convert Float64 to Int in Go?. For more information, please follow other related articles on the PHP Chinese website!