Swift 1.1 (or perhaps earlier) has even better C string bridging: let haystack = “This is a simple string” let needle = “simple” let result = String.fromCString(strstr(haystack, needle)) The CString type is gone completely.
_T stands for “text”. It will turn your literal into a Unicode wide character literal if and only if you are compiling your sources with Unicode support. See http://msdn.microsoft.com/en-us/library/c426s321.aspx.
C++ strings have a constructor that lets you construct a std::string directly from a C-style string: const char* myStr = “This is a C string!”; std::string myCppString = myStr; Or, alternatively: std::string myCppString = “This is a C string!”; As @TrevorHickey notes in the comments, be careful to make sure that the pointer you’re initializing … Read more
str==NULL tells you whether the pointer is NULL. str[0]==’\0′ tells you if the string is of zero-length. In that code, the test: if ((str == NULL) || (str[0] == ‘\0’)) is used to catch the case where it is either NULL or has zero-length. Note that short-circuiting plays a key role here: The point of … Read more
Virtually every compiler I’ve used provides source code for the runtime – so whether you’re using GCC or MSVC or whatever, you have the capability to look at the implementation. However, a large part or all of std::string will be implemented as template code, which can make for very difficult reading. Scott Meyer’s book, Effective … Read more