DoubleConverter

Description

The DoubleConverter class allows you to convert arbitrary values into doubles using the following extended conversion rules:

• Strings are converted to double values

• DateTime: total number of milliseconds since unix epoch

• Boolean: 1 for true and 0 for false

Static methods

toDouble

Converts a value into a double or returns 0 when the conversion is not possible.
See toDoubleWithDefault

static double toDouble(value)

• value: dynamic - value to convert.
• returns: double - double value or 0 when the conversion is not supported.

toDoubleWithDefault

Converts value into an integer or returns a default value when the conversion is not possible.

static double toDoubleWithDefault(value, double defaultValue)

• value: dynamic - value to convert.
• defaultValue: double - default value.
• returns: double - double value or default when the conversion is not supported.

toNullableDouble

Converts a value into a double or returns null when the conversion is not possible.

static double? toNullableDouble(value)

• value: dynamic - value to convert.
• returns: double? - double value or null when the conversion is not supported.

Examples

var value1 = DoubleConverter.toNullableDouble('ABC'); // Result: null
var value2 = DoubleConverter.toNullableDouble('123.456'); // Result: 123.456
var value3 = DoubleConverter.toNullableDouble(true); // Result: 1
var value4 = DoubleConverter.toNullableDouble( Date()); // Result: current milliseconds