What is double parse in flutter?

Parse source as a double literal and return its value . Accepts an optional sign ( + or – ) followed by either the characters “Infinity”, the characters “NaN” or a floating-point representation. A floating-point representation is composed of a mantissa and an optional exponent part.

Parse(String) Converts the string representation of a number to its double-precision floating-point number equivalent . Parse(String, NumberStyles) Converts the string representation of a number in a specified style to its double-precision floating-point number equivalent.

Parses a string containing a number literal into a number . The method first tries to read the input as integer (similar to int. parse without a radix). If that fails, it tries to parse the input as a double (similar to double.