convert string to int in dart code example

Example 1: Flutter turn string to int

// String -> int
main () {
    var one = int.parse('1');
    print(one == 1); // prints true
}

Example 2: string to int in dart

import 'dart:convert';

void main() {
    var a = 10; // An integer
    var b = "20"; // A string
    var c = int.parse(b);
    print(a + c);
}

Example 3: string to double dart

// String -> double
main () {
    var onePointOne = double.parse('1.1');
    print(onePointOne == 1.1); // prints true
}

Example 4: dart string to int

main () {
// String -> int
    var one = int.parse('1');
    print(one == 1); // prints true
    
// String -> double
    var two = double.parse('10');
    print(two); //result is => 10.0
}

Example 5: convert from int64 to int dart

double d = 20.5;

int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil();  // i = 21
int i = d.floor(); // i = 20