Conversion functions

Conversion functions change a value from one data type to another.

This table describes the conversion functions that Transform supports. The same functions are described in the Transform API Reference (Groovydoc).

User Function	Return Data Type	Description
`toBoolean(Number n)`	`Boolean`	Converts a number to a Boolean value. For example, `toBoolean(1)` evaluates to `true`. Note that only `0` evaluates to `false`. Any number other than `0` (including negative numbers) evaluates to `true`.
`toBoolean(String s)`	`Boolean`	Converts a String to a Boolean value. For example, `toBoolean("yes")` returns `false`. Note that this method only evaluates to `true` if the String is `"true"`. Capitalization is ignored, so `"true"`, `"TRUE"`, and `"tRuE"` are all `true`.
`toBoolean(Boolean b)`	`Boolean`	Converts a Boolean to a Boolean value. For example, `toBoolean("FALSE")` returns `false`.
`toDouble(Boolean b)` `toDouble(Number n)` `toDouble(String s)`	`Double`	Converts a Boolean, Number, or String to a Double.
`toLong(Boolean b)` `toLong(Date d)` `toLong(Double d)`	`Long`	Converts a Boolean, Date, or Double to a Long.
`toLong(String s)`	`Long`	Converts a String representation of a long to a Long. For example, `toBoolean("123")` returns `123`. Invalid Strings (for example, one that contains letters) return `null`.
`toString(Object arg)`	`String`	Converts an Object of any data type to a String.