From c2c581aa6a38438dd9ed8da0f59019691c5dd45d Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Thu, 21 May 2026 04:10:32 -0700
Subject: [PATCH] add sumLen

---
 src/lib.zig    |  2 ++
 src/sumLen.zig | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 src/sumLen.zig

diff --git a/src/lib.zig b/src/lib.zig
index f295833e44ec375ec91023ea2894945ee0f9540e..933baefd5538dd2c103d9dc958a0433e152ec9ee 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -122,6 +122,7 @@ pub const parseDigits = @import("./parseDigits.zig").parseDigits;
 pub const from_hex = @import("./from_hex.zig").from_hex;
 pub const Pointee = @import("./Pointee.zig").Pointee;
 pub const compareFnSlice = @import("./compareFnSlice.zig").compareFnSlice;
+pub const sumLen = @import("./sumLen.zig").sumLen;
 
 test {
     _ = @import("reduceNumber.zig");
@@ -216,4 +217,5 @@ test {
     _ = @import("from_hex.zig");
     _ = @import("Pointee.zig");
     _ = @import("compareFnSlice.zig");
+    _ = @import("sumLen.zig");
 }
diff --git a/src/sumLen.zig b/src/sumLen.zig
new file mode 100644
index 0000000000000000000000000000000000000000..3a8881d6753644480d9a99c737d923eea34d089e
--- /dev/null
+++ b/src/sumLen.zig
@@ -0,0 +1,28 @@
+const std = @import("std");
+const string = []const u8;
+const extras = @import("./lib.zig");
+
+pub fn sumLen(comptime T: type, slice: []const []const T) u64 {
+    var res: u64 = 0;
+    for (slice) |item| res += item.len;
+    return res;
+}
+
+test {
+    try std.testing.expect(sumLen(u8, &.{ &.{4}, &.{3}, &.{0}, &.{9}, &.{6}, &.{7}, &.{1}, &.{2}, &.{5}, &.{8} }) == 10);
+}
+test {
+    try std.testing.expect(sumLen(u16, &.{ &.{ 8, 6 }, &.{ 7, 3 }, &.{ 2, 1 }, &.{ 5, 0 }, &.{ 9, 4 } }) == 10);
+}
+test {
+    try std.testing.expect(sumLen(u21, &.{ &.{ 5, 4, 6 }, &.{ 1, 8, 3, 2 }, &.{ 9, 0, 7 } }) == 10);
+}
+test {
+    try std.testing.expect(sumLen(u32, &.{ &.{ 3, 4 }, &.{ 5, 1, 9, 0, 6, 2, 7, 8 } }) == 10);
+}
+test {
+    try std.testing.expect(sumLen(u40, &.{ &.{ 0, 5, 6, 7, 1, 2 }, &.{ 4, 9, 3, 8 } }) == 10);
+}
+test {
+    try std.testing.expect(sumLen(u64, &.{&.{ 5, 4, 3, 9, 1, 7, 6, 2, 0, 8 }}) == 10);
+}
-- 
2.54.0