After the initial assignment, to reassign C style string you have to copy the characters to the array one element at a time. The thing to remember about this type of string is that it isn't a special type, it is literally just an array of characters. There is also no special array...
string& assign ( const char * s ); Sets a copy of the string formed by the null-terminated character sequence (C string) pointed bysas the new content. The length of the character sequence is determined by the first ocurrence of a null character (as determined bytraits.length(s)). st...
declarations. For example, I am unsure if by "string array" you meanstd::string *pArray, or if you meanstd::vector<std::string> myArray. Or maybe you don't refer to STL strings at all, and you simply use the word "string" to refer to C-style strings, which really are char ...
And it that case, isn't a c++ string almost the same as a c string. (A char array but one is always null terminated and have some special functions). So if I provide the strcpy with a pointer to the first char(location) of c++ str, woudln't that be the same as providing it ...
c. string& assign ( const char* s, size_t n );将字符数组或者字符串的⾸n个字符替换原字符串内容 举例：string testassign = "Hello World";testassign.assign("go back to China", 7);cout<<testassign<<endl;//打印结果为go back d. string& assign ( const char* s );将字符串或者字符数组...
A value of basic_string::npos indicates all characters until the end of str. s Pointer to an array of characters (such as a c-string). n Number of characters to copy. c Character value, repeated n times. first, last Input iterators to the initial and final positions in a range. The...
C# split string (",") --error message cannot convert from string to char C# Split xml file into multiple files C# Split xml file into multiple files and map c# Sql Connection String issue C# SQL filter Query Parameter C# SQL INSERT Statement C# Sql server export dataTable to file access ...
{[33.8186]} {[<missing>]} {[33.8898]} {[ 33.8903]} {[33.9370]} {[ 33.9366]} {[33.9753]} {[ 33.9761]} {[33.9749]} {[<missing>]} {[33.9249]} {[ 33.9261]} {[33.9613]} {[ 33.9631]} {[34.1909]} ...
retain：用于指针变量。就是说你定义了一个变量，然后这个变量在程序的运行过程中会被更改，并且影响到其他方法。一般是用于字符串（ NSString，NSMutableString），数组（NSMutableArray，NSArray），字典对象，视图对象（UIView ），控制器对象（UIViewController）等 比如：property (nonatomic,retain) NS...
什么时候用assign,当然是破房子,简装的房子拉 基础类型(简单类型,原子类型):NSInteger,CGPoint,CGFloat,C数据类型(int,float,double,char等) 什么时候用copy含有可深拷贝的mutable子类的类,如NSArray,NSSet,NSDictionary,NSData的,NSCharacterSet,NSIndexSet,NSString(可深度拷贝的房子) 但是NSMutableArray这样的不可以...