refresh struct

examples/string/main.cpp

@@ -0,0 +1,42 @@
+#include <array>
+
+#include "hack/logger/logger.hpp"
+#include "hack/string/string.hpp"
+#include "hack/string/string_concat_helper.hpp"
+#include "hack/string/utf8_len.hpp"
+
+auto main(int argc, char *argv[]) -> int
+{
+  {// ex: split string
+    std::string str { "asdf,qwer,zxcv" };
+    std::string str_int { "1 2 3" };
+    hack::string::v_str v = hack::string::split_str(str, ',');
+    auto v_int = hack::string::split_stoi(str_int, ' ');
+    hack::log log;
+    for (const auto& c : v) log(c);
+    for (const auto& c : v_int) log(c);
+
+    std::string str_2 { "qqq,aaa:eee,ggg" };
+    hack::string::v_str v_2 = hack::string::split_str(str_2, ",:");
+    for (const auto& c : v_2) log(c);
+  }
+
+  {// ex: string::str_concat
+    std::string name = "tro";
+    std::string surname = "lolo";
+    const auto full_name = hack::string::str_concat + name + ", " + surname;
+    hack::log()(full_name);
+    hack::log()(hack::string::str_concat + "super", + "string");
+  }
+
+  {// ex: utf8_size
+    std::string str = "hi hi";
+    auto s = hack::string::utf8_len(str);
+    hack::log()(s);
+
+    s = hack::string::utf8_len("asdf");
+    hack::log()(s);
+  }
+}
+
+