prepare for c++17

code/8/8.1.cpp

@@ -0,0 +1,50 @@
+//
+// 8.1.cpp
+// c++1x tutorial
+//
+// created by changkun at shiyanlou.com
+//
+// noexcept
+
+#include <iostream>
+
+void may_throw() {
+    throw true;
+}
+auto non_block_throw = []{
+    may_throw();
+};
+void no_throw() noexcept {
+    return;
+}
+
+auto block_throw = []() noexcept {
+    no_throw();
+};
+
+int main()
+{
+    std::cout << std::boolalpha
+    << "may_throw() noexcept? " << noexcept(may_throw()) << std::endl
+    << "no_throw() noexcept? " << noexcept(no_throw()) << std::endl
+    << "lmay_throw() noexcept? " << noexcept(non_block_throw()) << std::endl
+    << "lno_throw() noexcept? " << noexcept(block_throw()) << std::endl;
+    
+    try {
+        may_throw();
+    } catch (...) {
+        std::cout << "捕获异常, 来自 my_throw()" << std::endl;
+    }
+    
+    try {
+        non_block_throw();
+    } catch (...) {
+        std::cout << "捕获异常, 来自 non_block_throw()" << std::endl;
+    }
+    
+    try {
+        block_throw();
+    } catch (...) {
+        std::cout << "捕获异常, 来自 block_throw()" << std::endl;
+    }
+}