Merge branch 'master' of github.com:chronolaw/cpp_study

Author: chronolaw

.gitignore

@@ -35,3 +35,4 @@
 a.out
 *.swp
 *.pb.*
+example_*_cpp*

Makefile

@@ -0,0 +1,14 @@
+sub_dirs=$(wildcard section[0-3])
+
+sub_builds=$(addprefix build_,$(sub_dirs))
+sub_cleans=$(addprefix clean_,$(sub_dirs))
+
+all: $(sub_builds)
+
+clean: $(sub_cleans)
+
+build_%: %
+	make -C $^
+
+clean_%: %
+	make -C $^ clean

README.md

@@ -1,6 +1,6 @@
 # cpp_study
 
-《C++实践经验谈》(delayed to May) Follow me to study modern C++.
+[《C++实战笔记》](https://time.geekbang.org/column/intro/309) Follow me to study modern C++.
 
 Pull requests of make/cmake are welcome!
 

common.mk

@@ -0,0 +1,40 @@
+CXX_FLAGS=-Wall
+CXX=g++
+
+HAS_CPP14=$(shell \
+	echo > /tmp/dummy.cpp ; \
+	if $(CXX) -std=c++14 -c -o /dev/null /tmp/dummy.cpp 2>/dev/null ; then \
+		echo yes ; \
+	else \
+		echo no ; \
+	fi)
+
+HAS_CPP11=$(shell \
+	echo > /tmp/dummy.cpp ; \
+	if $(CXX) -std=c++11 -c -o /dev/null /tmp/dummy.cpp 2>/dev/null ; then \
+		echo yes ; \
+	else \
+		echo no ; \
+	fi)
+
+ifeq ($(HAS_CPP14), yes)
+	PREFER_STANDARD:=cpp14
+else
+ifeq ($(HAS_CPP11), yes)
+	PREFER_STANDARD:=cpp11
+endif
+endif
+
+all: examples
+
+example_%_cpp14: %.cpp
+	$(CXX) -std=c++14 -o $@ $^ $(CXX_FLAGS) $($@_cxx_flags) $($@_ld_flags)
+
+example_%_cpp11: %.cpp
+	$(CXX) -std=c++11 -o $@ $^ $(CXX_FLAGS) $($@_cxx_flags) $($@_ld_flags)
+
+example_%_cpp98: %.cpp
+	$(CXX) -std=c++98 -o $@ $^ $(CXX_FLAGS) $($@_cxx_flags) $($@_ld_flags)
+
+clean:
+	rm -fr example_*

section0/Makefile

@@ -0,0 +1,9 @@
+include ../common.mk
+
+ifeq ($(HAS_CPP14), yes)
+examples: example_test_cpp14
+endif
+
+ifeq ($(HAS_CPP11), yes)
+examples: example_test_cpp11
+endif

section1/Makefile

@@ -0,0 +1,21 @@
+include ../common.mk
+
+
+ifeq ($(HAS_CPP14), yes)
+examples: \
+	example_codestyle_cpp14 \
+	example_compile_cpp14 \
+	example_oop_cpp14 \
+	example_preprocess_cpp14
+endif
+
+ifeq ($(HAS_CPP11), yes)
+examples: \
+	example_codestyle_cpp11 \
+	example_compile_cpp11 \
+	example_oop_cpp11 \
+	example_preprocess_cpp11
+endif
+
+# example_preprocess_cpp98 is showing version check with compile failed.
+# please explicit using `make example_preprocess_cpp98` under section1 folder

section1/compile.cpp

@@ -7,7 +7,10 @@
 //
 // gcc -E -dM - < /dev/null
 
+#include <cassert>
+
 #include <typeinfo>
+#include <string>
 #include <iostream>
 #include <stdexcept>
 #include <type_traits>
@@ -123,6 +126,18 @@ void check_type(T v)
     cout << is_void<void>::value << endl;
 }
 
+void case5()
+{
+    int     i = 10;
+    int    *p = &i;
+
+    assert(i > 0 && "i must be greater than zero");
+    assert(p != nullptr);
+
+    std::string str = "hello";
+    assert(!str.empty());
+}
+
 int main()
 {
     using namespace std;
@@ -141,6 +156,7 @@ int main()
     case3();
 
     case4();
+    case5();
 
     check_type(10);
     //check_type((void*)0);

section1/preprocess.cpp

@@ -122,6 +122,8 @@ int main()
     case2();
 
     my_own::case3();
+
+    [[gnu::unused]] // ignore warning
     my_own::MyClass obj;
 
     case4();

section2/Makefile

@@ -0,0 +1,15 @@
+include ../common.mk
+
+ifeq ($(HAS_CPP14), yes)
+examples: \
+	example_auto_cpp14 \
+	example_const_cpp14 \
+	example_exception_cpp14 \
+	example_lambda_cpp14 \
+	example_smart_ptr_cpp14
+endif
+
+ifeq ($(HAS_CPP11), yes)
+examples: \
+	example_exception_cpp11
+endif

section3/Makefile

@@ -0,0 +1,13 @@
+include ../common.mk
+
+example_thread_cpp14_ld_flags=-lpthread
+example_thread_cpp11_ld_flags=-lpthread
+
+
+ifeq ($(HAS_CPP14), yes)
+examples: \
+	example_algo_cpp14 \
+	example_container_cpp14 \
+	example_string_cpp14 \
+	example_thread_cpp14
+endif