Bool

Convert an interface to a bool type, with default value.

cvt.Bool(0)                 // false
cvt.Bool(nil)               // false
cvt.Bool("0")               // false
cvt.Bool("false")           // false
cvt.Bool([]int{})           // false

cvt.Bool(true)              // true
cvt.Bool("true")            // true
cvt.Bool([]int{1, 2})       // true
cvt.Bool([]byte("true"))    // true

BoolE

Convert an interface to a bool type.

cvt.BoolE(0)                // false,nil
cvt.BoolE(nil)              // false,nil
cvt.BoolE("0")              // false,nil
cvt.BoolE("false")          // false,nil
cvt.BoolE([]int{})          // false,nil

cvt.BoolE(true)             // true,nil
cvt.BoolE("true")           // true,nil
cvt.BoolE([]int{1, 2})      // true,nil
cvt.BoolE([]byte("true"))   // true,nil

BoolP

Convert and store in a new bool value, and returns a pointer to it.

cvt.BoolP("true")   // (*bool)(0x14000126180)(true)

Conversion rule

nil

Return false

Bool

Return original value

Number

Integer, Float, and their derived type, such as time.Duration of int64

If val != 0, then return true; otherwise return false.

String

string, []byte, and their derived type

json.Number

If value can convert to float64, then compare val != 0; if not a number string, report an error.

Array/Slice/Map

If the number of elements (len) greater than 0, the return true; Return to false otherwise.

Others

Other types, report an error.

More Examples

More case see unit: bool_test.go