Core syntax Operators

Expressions and Operators

Klyn expressions are compact but strongly typed. This page covers arithmetic, comparisons, boolean logic, identity checks, membership, indexing, interpolation, and operator overloads.

Arithmetic and Updates

total = 10 + 5
delta = total - 3
scaled = delta * 2
ratio = scaled / 4
rest = 17 % 5
power = 2 ** 10

total += 1
total -= 1
total *= 2
total /= 2
total++
total--

Comparisons

value = 5

assert value == 5
assert value != 6
assert value < 10
assert value <= 5
assert value >= 1
assert 1 < value < 10

Chained comparisons are a built-in language feature and are ideal for range-style conditions.

Boolean Logic, Identity, Membership

assert ready and connected
assert not failed
assert value is String
assert value is not null
assert 10 in [10, 20, 30]
assert "green" not in {"red", "blue"}

Use language keywords

Klyn uses and, or, and not. C-style && and || are rejected.

Strings and Interpolation

name = "Ada"
score = 7
ratio = 3.14159

print(f"Player: {name}")
print(f"Score: {score:03d}")
print(f"Ratio: {ratio:.4f}")

Interpolated strings are often the clearest way to build small textual messages without manual concatenation.

Calls, Members, and Indexing

user.name
lines[0]
data[-1]
config["theme"]
result = compute(10)

Conditional Expressions

message = "small" if value < 10 else "large"

Operator Overloading

public operator==(other as Point) as Boolean:
    return this.x == other.x and this.y == other.y

c = a @ b

Operators use ordinary syntax at the call site. A type may define only the operators that make sense for its domain.