diff --git a/.gitignore b/.gitignore
index de8be27..eba4c17 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
 output-vagrant
 *~
+*.old
+*.old.*
+*.bak
 .git
 .vagrant
 .secret
@@ -7,4 +10,4 @@ output-vagrant
 .idea
 # test
 .gradle
-build
\ No newline at end of file
+build
diff --git a/2024/10/golang_webserver_demo1/main.go b/2024/10/golang_webserver_demo1/main.go
index da9f8b3..33a79b3 100644
--- a/2024/10/golang_webserver_demo1/main.go
+++ b/2024/10/golang_webserver_demo1/main.go
@@ -26,10 +26,10 @@ func main() {
 			return
 		}
 
-		for i := 0; i < len(dirs); i++ {
+    for _, dir := range dirs {
 			m := make(map[string]string)
-			m["name"] = dirs[i].Name()
-			if dirs[i].IsDir() {
+			m["name"] = dir.Name()
+			if dir.IsDir() {
 				m["dir"] = "yes"
 			} else {
 				m["dir"] = "no"
diff --git a/current/algorithms/callingc_zig/build.zig b/current/algorithms/callingc_zig/build.zig
index 82b816c..56ced37 100644
--- a/current/algorithms/callingc_zig/build.zig
+++ b/current/algorithms/callingc_zig/build.zig
@@ -4,7 +4,7 @@ pub fn build(b: *std.Build) void {
     const exe = b.addExecutable(.{
         .name = "callingc",
         .root_source_file = b.path("src/callingc.zig"),
-        .target = b.host,
+        .target = b.graph.host,
         .optimize = b.standardOptimizeOption(.{}),
     });
     exe.addIncludePath(b.path("c-src"));