#include<iostream>#include<string>using std::cin;using std::cout;using std::endl;using std::string;intmain(){string text="Lorem ipsum dolor sit amet, consectetur adipiscing elit.";text.erase(0,6);cout<<text<<endl;text.erase(text.find('c'));cout<<text<<endl;text.erase(2);cout<<te...
The number of elements removed from s3 is:1. After the element with a key of "E#" is deleted, the set s3 is: [A] [A#] [B] [C] [C#] [D] [D#] [E] [F] [F#] [G] [G#] size() == 12
C++中函数指针的用途非常广泛，例如回调函数，接口类的设计等，但函数指针始终不太灵活，它只能指向全局或...
【C/C++ 基础知识 】C++中易混淆的函数和关键字:std::find vs std::search,std::remove vs std::erase,remove vs delete 1. 引言(Introduction) 在C++编程中,有一些函数和关键字在英文名称上看似相似,但它们的用途和语义却大不相同。这种相似性可能会导致程序员在编程时产生混淆,从而引发错误或不符合预期的行...
[C] [C#] [D] [D#] [E] [E#] [F] [F#] [G] [G#] size() == 13 The number of elements removed from s3 is: 1. After the element with a key of "E#" is deleted, the set s3 is: [A] [A#] [B] [C] [C#] [D] [D#] [E] [F] [F#] [G] [G#] size() == ...
str =3x1 string"C:\Temp\MyReport.docx" "C:\Data\Experiment1\Trial1\Sample1.csv" "C:\Temp\Slides.pptx" Delete the paths, leaving only file names. To match paths, create a pattern using thewildcardPatternfunction that matches all text that includes a final"\"character. Use that pattern...
#include <iostream> #include using namespace std; int main(void) { /* Initializer_list constructor */ map<char, int> m = { {'a', 1}, {'b', 2}, {'c', 3}, {'d', 4}, {'e', 5}, }; cout << "Map contains following elements befor erase operation" << endl; for (aut...
@interface Person (Test) @property (nonatomic,strong) NSString *hibo_name; -(void)hb_eat; @end 1. 2. 3. 4. 终端进入类文件所在位置,通过命令将分类编译成C++形式。如下: clang -rewrite-objc Person+Test.m 1. 打开文件找到_category_t如下: struct _category_t { const char *name; struct _...
从根本上说，STL是一些“容器”的集合，这些“容器”有list, vector,set,map等，STL也是算法和其它一些组件的集合。这里的“容器”和算法的集合指的是世界上很多聪明人很多年的杰作。是C＋＋标准库的一个重要组成部分，它由Stepanov and Lee等人最先开发，它是与C＋＋几乎同时开始开发的；一开始STL选择了Ada作为...
erase_if( std::basic_string<CharT, Traits, Alloc>& c, Pred pred ); (2) (since C++20) 1) Erases all elements that compare equal to value from the container. Equivalent to auto it = std::remove(c.begin(), c.end(), value); auto r = c.end() - it; c.erase(it, c.end(...