bool is_open() const;
basic_filebuf* open(const char* s, ios_base::openmode mode);
basic_filebuf* open(const filesystem::path::value_type* s,
ios_base::openmode mode); // wide systems only; see [fstream.syn]
ios_base flag combination | stdio equivalent | ||||||
binary | in | out | trunc | app | noreplace | ||
+ | "w" | ||||||
+ | + | "wx" | |||||
+ | + | "w" | |||||
+ | + | + | "wx" | ||||
+ | + | "a" | |||||
+ | "a" | ||||||
+ | "r" | ||||||
+ | + | "r+" | |||||
+ | + | + | "w+" | ||||
+ | + | + | + | "w+x" | |||
+ | + | + | "a+" | ||||
+ | + | "a+" | |||||
+ | + | "wb" | |||||
+ | + | + | "wbx" | ||||
+ | + | + | "wb" | ||||
+ | + | + | + | "wbx" | |||
+ | + | + | "ab" | ||||
+ | + | "ab" | |||||
+ | + | "rb" | |||||
+ | + | + | "r+b" | ||||
+ | + | + | + | "w+b" | |||
+ | + | + | + | + | "w+bx" | ||
+ | + | + | + | "a+b" | |||
+ | + | + | "a+b" |
basic_filebuf* open(const string& s, ios_base::openmode mode);
basic_filebuf* open(const filesystem::path& s, ios_base::openmode mode);
basic_filebuf* close();