From c14a385a8ada7973d122f44267f694f42028e766 Mon Sep 17 00:00:00 2001
From: "a.pivkin" <a.pivkin@kek.azaza>
Date: Sun, 28 Dec 2025 12:50:20 +0300
Subject: [PATCH] sadf

---
 book_with_bridge/func_in_func/go.mod  |  3 ++
 book_with_bridge/func_in_func/main.go | 50 +++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 book_with_bridge/func_in_func/go.mod
 create mode 100644 book_with_bridge/func_in_func/main.go

diff --git a/book_with_bridge/func_in_func/go.mod b/book_with_bridge/func_in_func/go.mod
new file mode 100644
index 0000000..371eb8f
--- /dev/null
+++ b/book_with_bridge/func_in_func/go.mod
@@ -0,0 +1,3 @@
+module main
+
+go 1.25.5
diff --git a/book_with_bridge/func_in_func/main.go b/book_with_bridge/func_in_func/main.go
new file mode 100644
index 0000000..deae5e2
--- /dev/null
+++ b/book_with_bridge/func_in_func/main.go
@@ -0,0 +1,50 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+)
+
+func findSub(s, sub, repl string) (finStr string) {
+	if len(s) < len(sub) {
+		return s[:]
+	}
+
+	found := false
+	currCount := 0
+	newStr := ""
+
+	if s[:len(sub)] == sub {
+		newStr = repl
+		currCount++
+		found = true
+		// return
+	} else {
+		newStr = string(s[0])
+	}
+
+	var resStr string
+
+	if found {
+		resStr = findSub(s[len(sub):], sub, repl)
+	} else { 
+		resStr = findSub(s[1:],sub,repl) 
+	}
+
+	return  newStr + resStr
+}
+
+func expand(s,sub,repl string, f func(init string,sub string,repl string) string) string{
+	res := f(s,sub,repl)
+	return res
+}
+
+func main() {
+	str := flag.String("str", "lolkeklolkeklol", "Initital string")
+	sub := flag.String("sub", "kek", "substring to find")
+	repl := flag.String("repl", "puk", "String to replace with")
+
+	// res := findSub(*str, *sub, *repl)
+	res := expand(*str,*sub,*repl,findSub)
+	fmt.Println(res)
+}