STL I use

[ydoh2016]

Belows are STLs I often use.

[ydoh2016]

vector

• void assign (size_type n, const value_type& val) param: replace vector with val repeated n times return: void be careful: it replaces original vector http://www.cplusplus.com/reference/vector/vector/assign/

• bool empty(void) const param: void return: true if empty, false if not https://www.cplusplus.com/reference/vector/vector/empty/

• reference back(void) / const reference back(void) const param: void return: last element of vector https://www.cplusplus.com/reference/vector/vector/back/

• size_type size(void) const param: void return: size of vector be careful: it returns type is size_type, which is unsigned type https://www.cplusplus.com/reference/vector/vector/size/

• void push_back(const value_type& val) param: value to push back return: void https://www.cplusplus.com/reference/vector/vector/push_back/

[ydoh2016]

string

• int stoi(const string& str, size_t* idx = 0, int base = 10) param: interpret str from idx on base, set idx(ptr) on next character after all numbers return: interpreted integer https://www.cplusplus.com/reference/string/stoi/

• string& append(const char* s, size_t n) param: append s n time return: appended string http://www.cplusplus.com/reference/string/string/append/

[ydoh2016]

algorithm

• ForwardIterator max_element(ForwardIterator first, ForwardIterator last) param: max element from first to last return: pointer to first max element be careful: it returns pointer, not value http://www.cplusplus.com/reference/algorithm/max_element/