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print / printn

Abstract

print(), printn(), printn_all() and printn_fflv() print values of variable.
printn(), printn_all() and printn_fflv() are macro functions and able to apply variables can print by for_printn().

print(), printn(), printn_all() and printn_fflv() は変数の値を表示する．
printn(), printn_all() and printn_fflv() はマクロ関数で，for_printn() で表示できる変数に適用できる．

name of macro function descriptions
print() print values of variable.
変数の値を出力します．
printn() print values of variable with variable name.
変数の値を，変数名を付与して出力します．
printn_all() print values of variable with variable name, function name and function line number.
変数の値を，変数名と関数名，関数の行番号を付与して出力します．
printn_fflv() print values of variable with variable name, function name, function line number, path to the function and implemented file name.
変数の値を，変数名と関数名，関数の行番号，実装のファイルのファイル名とパス，を付与して出力します．

Header file

namespace sstd{
    void print(const  void* rhs);
    void print(const  bool  rhs);
    void print(const  char  rhs);
    void print(const  int8  rhs);
    void print(const  int16 rhs);
    void print(const  int32 rhs);
    void print(const  int64 rhs);
    void print(const uint8  rhs);
    void print(const uint16 rhs);
    void print(const uint32 rhs);
    void print(const uint64 rhs);
    void print(const float  rhs);
    void print(const double rhs);
    void print(const        char* rhs);
    void print(const std::string& rhs);
    template <typename T>
    void print(const std::vector<T>& rhs);
    template <typename T_lhs, typename T_rhs>
    void print(const std::unordered_map<T_lhs, T_rhs>& rhs);

    void for_printn( void* rhs);
    void for_printn( bool  rhs);
    void for_printn( char  rhs);
    void for_printn( int8  rhs);
    void for_printn( int16 rhs);
    void for_printn( int32 rhs);
    void for_printn( int64 rhs);
    void for_printn(uint8  rhs);
    void for_printn(uint16 rhs);
    void for_printn(uint32 rhs);
    void for_printn(uint64 rhs);
    void for_printn( float rhs);
    void for_printn(double rhs);
    void for_printn(const        char* rhs);
    void for_printn(const std::string& rhs);
    template <typename T>
    void for_printn(const std::vector<T>& rhs);
    template <typename T_lhs, typename T_rhs>
    void for_printn(const std::unordered_map<T_lhs, T_rhs>& rhs);

    //---

    // for #define
    inline void printn_dummy(){}
    inline void printn(...){}
    inline void printn_all(...){}
}

#define printn(var) printn_dummy();{printf("%s", #var);sstd::for_printn(var);}
#define printn_all(var) printn_dummy();{printf("%s(%d): %s", __func__, __LINE__, #var);sstd::for_printn(var);}
#define printn_fflv(var) printn_dummy();{printf("%s: %s(%d): %s", __FILE__, __func__, __LINE__, #var);sstd::for_printn(var);}

Usage

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    int i = 0;
    sstd::print(i);
    sstd::printn(i);
    sstd::printn_all(i);
    sstd::printn_fflv(i);
}
  • Execution result 
    0
i = 0
main(7): i = 0
.././tmp/.._._docs_src_docs_src_print_print.md_86.cpp/.._._docs_src_docs_src_print_print.md_86.cpp: main(8): i = 0

Normal case

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    int num = 123;
    sstd::printn(&num);
}
  • Execution result 
    &num = 0x7fff1edd4114

char* case

  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    const char *pC = "abc";
    sstd::printn((void*)pC); // To print a pointer address, sstd::print requires to cast char* to void*.

    sstd::printn(pC); // when the case not cast to void*, sstd::print treats the variable as a string.
}
  • Execution result 
    (void*)pC = 0x558fa713500d
pC = "abc"
  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    bool TF_t = true;  sstd::printn(TF_t);
    bool TF_f = false; sstd::printn(TF_f);
}
  • Execution result 
    TF_t = true
TF_f = false
  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    std::vector<std::string> vS = {"a", "b", "c"};
    sstd::printn(vS);
    std::vector<std::vector<std::string>> vvS = {{"a", "b", "c"}, {"d", "e", "f"}};
    sstd::printn(vvS);
    printf("\n");

    // any depth vector<T>. T is bool, char, (u)int8-16-32-64, float, double, char* and std::string.
    std::vector<std::vector<std::vector<std::vector<int>>>> v4_int = {{{{1, 2}, {3, 4}}, {{5, 6}, {7, 8}}}, {{{9, 10}, {11, 12}}, {{13, 14}, {15, 16}}}};
    sstd::printn(v4_int);
}
  • Execution result 
    vS = ["a" "b" "c"]
vvS = [["a" "b" "c"] ["d" "e" "f"]]

v4_int = [[[[1 2] [3 4]] [[5 6] [7 8]]] [[[9 10] [11 12]] [[13 14] [15 16]]]]
  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    std::unordered_map<std::string, std::vector<uint>> table;
    table["abc"] = {123, 456};
    table["def"] = {456, 789};
    sstd::printn(table);
}
  • Execution result 
    table = [ [key: "def", value: [456 789]], [key: "abc", value: [123 456]] ]
  • main.cpp 
    #include <sstd/sstd.hpp>

int main(){
    sstd::mat_r<double> m = {{1,2,3}, {4,5,6}, {7,8,9}};
    sstd::printn(m);
}
  • Execution result 
    m = 
 1.000000     2.000000    3.000000
 4.000000     5.000000    6.000000
 7.000000     8.000000    9.000000

Implementation