---
id: uuid-equals
name: Uuid.equals
category: uuid
kind: namespace-method
tokens: Uuid.equals
sig: Uuid.equals(a, b) -> bool
tip: Case-insensitive UUID equality.
order: 8
ns: Uuid
member: equals
---

Compares two UUIDs for equality, ignoring case. UUIDs generated by this library are always lowercase, so a plain <code>==</code> works between them — but a UUID that arrived from another system may be upper- or mixed-case, and <code>equals</code> matches it correctly without you having to normalise first. Values of different length are never equal.

Parameters:
- `a`, `b` — the UUID strings to compare

```ludic
program Eq {
  entry {
    let lo = "550e8400-e29b-41d4-a716-446655440000"
    let up = "550E8400-E29B-41D4-A716-446655440000"
    if Uuid.equals(lo, up) { print(1) }   # case-insensitive
  }
}
```