diff --git a/src/isIndexable.zig b/src/isIndexable.zig
index 8afe9cf018685b7765c0b8d09874c8b3feb63ea6..9e0cd48da221ee366575e0ccdb08ea801094a04c 100644
--- a/src/isIndexable.zig
+++ b/src/isIndexable.zig
@@ -1,6 +1,7 @@
 const std = @import("std");
 const string = []const u8;
 const extras = @import("./lib.zig");
+const isTuple = extras.isTuple;
 
 pub fn isIndexable(comptime T: type) bool {
     if (comptime is(.pointer)(T)) {
@@ -19,9 +20,6 @@ fn is(comptime id: std.builtin.TypeId) fn (type) bool {
     };
     return Closure.trait;
 }
-fn isTuple(comptime T: type) bool {
-    return is(.@"struct")(T) and @typeInfo(T).@"struct".is_tuple;
-}
 
 test {
     const array = [_]u8{0} ** 10;
diff --git a/src/isTuple.zig b/src/isTuple.zig
new file mode 100644
index 0000000000000000000000000000000000000000..a606bf52287c388f88b04891cf58952c03a30f3c
--- /dev/null
+++ b/src/isTuple.zig
@@ -0,0 +1,15 @@
+const std = @import("std");
+const string = []const u8;
+const extras = @import("./lib.zig");
+
+pub fn isTuple(comptime T: type) bool {
+    return is(.@"struct")(T) and @typeInfo(T).@"struct".is_tuple;
+}
+fn is(comptime id: std.builtin.TypeId) fn (type) bool {
+    const Closure = struct {
+        pub fn trait(comptime T: type) bool {
+            return id == @typeInfo(T);
+        }
+    };
+    return Closure.trait;
+}
diff --git a/src/lib.zig b/src/lib.zig
index cdb650202ccba376dacbcb97a17f2e2cd07884c7..1985b7b2834105bf3994ab8faac1532933e56525 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -89,6 +89,7 @@ pub const compareFnSlice = @import("./compareFnSlice.zig").compareFnSlice;
 pub const sumLen = @import("./sumLen.zig").sumLen;
 pub const splitScalarN = @import("./splitScalarN.zig").splitScalarN;
 pub const indexOfAggregate = @import("./indexOfAggregate.zig").indexOfAggregate;
+pub const isTuple = @import("./isTuple.zig").isTuple;
 
 test {
     _ = @import("reduceNumber.zig");
@@ -167,4 +168,5 @@ test {
     _ = @import("sumLen.zig");
     _ = @import("splitScalarN.zig");
     _ = @import("indexOfAggregate.zig");
+    _ = @import("isTuple.zig");
 }