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void main () {
{
var foo = 123;
var bar = 123;
assert (foo == bar == 123);
}
{
var foo = 111;
var bar = 222;
assert (foo != bar == 222);
}
{
var foo = 111;
var bar = 111;
assert (foo == bar != 222);
}
{
var foo = 111;
var bar = 111;
assert (0 < foo == bar < 222);
}
{
var a = 111;
var b = 111;
var c = 111;
assert (a == b == c == 111);
}
{
var a = 111;
var b = 222;
var c = 333;
assert (a != b != c != 123);
}
{
var foo = "world";
var bar = "hello";
assert (foo > bar == "hello");
}
{
var a = "hello";
var b = "hello";
var c = "hello";
assert ("hello" == a <= b == c == "hello" <= "hello");
}
{
var foo = "h";
var bar = "h";
assert (foo == bar < "hello");
}
{
var foo = "hello";
var bar = "world";
assert (foo != bar == "world");
}
{
var foo = "world";
var bar = "world";
assert (foo == bar != "hello");
}
{
var foo = "world";
var bar = "world";
assert ((foo == bar != "hello") == (0 == 0 <= 1)); // true == true
}
{
var foo = "world";
var bar = "world";
assert ((foo == bar == "hello") == (1 == 1 <= 0)); // false == false
}
}
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