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num_conversions.go
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num_conversions.go
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package go_utils
import (
"strconv"
)
type Float64ConversionError struct {
}
func (e Float64ConversionError) Error() string {
return "Conversion Error: Could not convert num to float64."
}
func ConvNumToFloat64(a interface{}) (float64, error) {
switch t := a.(type) {
case int:
return float64(t), nil
case uint:
return float64(t), nil
case int8:
return float64(t), nil
case int16:
return float64(t), nil
case int32:
return float64(t), nil
case int64:
return float64(t), nil
case uint8:
return float64(t), nil
case uint16:
return float64(t), nil
case uint32:
return float64(t), nil
case uint64:
return float64(t), nil
case float32:
return float64(t), nil
case float64:
return t, nil
}
return 0, Float64ConversionError{}
}
type IntConversionError struct {
}
func (e IntConversionError) Error() string {
return "Conversion Error: Could not convert num to int."
}
func ConvNumToInt(a interface{}) (int, error) {
switch t := a.(type) {
case int:
return t, nil
case uint:
return int(t), nil
case int8:
return int(t), nil
case int16:
return int(t), nil
case int32:
return int(t), nil
case int64:
return int(t), nil
case uint8:
return int(t), nil
case uint16:
return int(t), nil
case uint32:
return int(t), nil
case uint64:
return int(t), nil
case float32:
return int(t), nil
case float64:
return int(t), nil
}
return 0, IntConversionError{}
}
type StringConversionError struct {
}
func (e StringConversionError) Error() string {
return "Conversion Error: Could not convert sting to int."
}
func ConvStringToInt(a interface{}) (int, error) {
switch t := a.(type) {
case string:
i, err := strconv.Atoi(t)
if err != nil {
return 0, StringConversionError{}
}
return i, nil
}
return 0, StringConversionError{}
}