# RegexPattern.hash(into:)

- **Module:** RegexPattern
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-swift/blob/254f8b2be7eb60cacc3ffcb3ea8e456784f582df/Sources/LibTmux/RegexPattern.swift#L151
- **Page:** https://libtmux.org/en/swift/latest/reference/regexpattern-hash(into-)/

```
RegexPattern.hash(into:)(into: inout Hasher) -> ()
```

Hashes the essential components of this value by feeding them into the given hasher.

Implement this method to conform to the `Hashable` protocol. The
components used for hashing must be the same as the components compared
in your type's `==` operator implementation. Call `hasher.combine(_:)`
with each of these components.

- Important: In your implementation of `hash(into:)`,
  don't call `finalize()` on the `hasher` instance provided,
  or replace it with a different instance.
  Doing so may become a compile-time error in the future.

- Parameter hasher: The hasher to use when combining the components
  of this instance.