print(true == true);    # expect: true
print(true == false);   # expect: false
print(false == true);   # expect: false
print(false == false);  # expect: true

# Not equal to other types.
print(true == 1);        # expect: false
print(false == 0);       # expect: false
print(true == "true");   # expect: false
print(false == "false"); # expect: false
print(false == "");      # expect: false

print(true != true);    # expect: false
print(true != false);   # expect: true
print(false != true);   # expect: true
print(false != false);  # expect: false

# Not equal to other types.
print(true != 1);        # expect: true
print(false != 0);       # expect: true
print(true != "true");   # expect: true
print(false != "false"); # expect: true
print(false != "");      # expect: true