How Can I Efficiently Convert a Go float64 to an int?

Converting Data Types in Go: float64 to int Conversion Simplified

In Go, converting a float64 to an int may seem like a straightforward process using the strconv package. However, this approach requires converting the float64 to a string first, which can introduce unnecessary complexity.

A more elegant solution is to use type casting to directly convert between compatible data types. For example, to convert a float64 to an int, you can use the following syntax:

var y int = int(x)

This code assigns the integer value of the float64 variable x to the integer variable y. In this case, the fractional part of x is truncated, resulting in the integer value of 5.

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

This simple type cast provides a convenient way to convert numeric data types without the need for additional string manipulation.

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