From bce2ff336dc384eded2a2937bc79602d9c3596ce Mon Sep 17 00:00:00 2001
From: Tom Brewe <contact@tombrewe.de>
Date: Mon, 24 Feb 2025 15:55:26 +0100
Subject: [PATCH] fix: make base64 concurrency safe

when changing the Swift version 5->6 in package.swift,
by converting the variable to a `let`.
---
 Sources/Geohash/Geohash.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sources/Geohash/Geohash.swift b/Sources/Geohash/Geohash.swift
index b8505dd..adc4b9f 100644
--- a/Sources/Geohash/Geohash.swift
+++ b/Sources/Geohash/Geohash.swift
@@ -144,7 +144,7 @@ public extension CLLocationCoordinate2D {
 #endif
 
 public extension Geohash {
-    private static var base32 = "0123456789bcdefghjkmnpqrstuvwxyz"
+    private static let base32 = "0123456789bcdefghjkmnpqrstuvwxyz"
     enum Direction: String {
         case n, e, s, w