let newStr = String(str[..<index]) // = str.substring(to: index) In Swift 3 let newStr = String(str[index...]) // = str.substring(from: index) In Swif 3 let newStr = String(str[range]) // = str.substring(with: range) In Swift 3…

deprecated conversion from string constant to ‘char*’ #include <iostream> using namespace std; int fuc(char *a) { cout << a << endl; } int main() { fuc("hello"); } Linux 环境下当GCC版本比较高时,编译代码可能出现的问题 问题是这样产生的,先看这个函数原型: 1 void someF…

warning:deprecated conversion from string constant to 'char *' 解决方式 #include <iostream> using namespace std; int fuc(char *a) { cout << a << endl; } int main() { fuc("hello"); } Linux 环境下当GCC版本号比較高时,编译代码可能出现的问题. 主要原因是: char * 指…

warning: deprecated conversion from string constant to 'char* #include<iostream> using namespace std; class Student { private: int age; char*name; public: Student(int m, char *n) { age=m;name=n; } Student() { age=;name="unnamed"; } ~ Stude…

  exception PLS-00215: String length constraints must be in range (1 .. 32767) CreationTime--2018年8月16日08点49分 Author:Marydon 1.情景展示 存储过程声明变量时,编译报错信息如下: 2.原因分析 直译结果:字符串长度限制在范围(1...32767) 意思是:声明变量的时候,必须指定其最大长度. 3.解决方案 指定字符串的大小 V_SQL varchar2(1000) := '…

You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in wordsexactly once and without any intervening characters. For example, give…

#include <iostream> using namespace std; int fuc(char *a) { cout << a << endl; } int main() { fuc("hello"); } Linux 环境下当GCC版本比较高时,编译代码可能出现的问题 问题是这样产生的,先看这个函数原型: void someFunc(char *someStr); 再看这个函数调用: someFunc("I'm a strin…

w http://legacy.python.org/dev/peps/pep-0008/ Yes: if foo.startswith('bar'):No:  if foo[:3] == 'bar':…

我自己在使用如下函数进行转换时报的错 int sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[]); 网上搜索的答案: https://stackoverflow.com/questions/23067722/swscaler-…

3. Longest Substring Without Repeating Characters Medium Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of…