dart convert int32 to int code example

Example 1: 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 2: 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