大约有 40,000 项符合查询结果（耗时：0.0374秒） [XML]
Is there a __CLASS__ macro in C++?
... extracting the information through a macro style interface.
inline std::string methodName(const std::string& prettyFunction)
{
size_t colons = prettyFunction.find("::");
size_t begin = prettyFunction.substr(0,colons).rfind(" ") + 1;
size_t end = prettyFunction.rfind("(") - begin;
...
How to parse a string to an int in C++?
What's the C++ way of parsing a string (given as char *) into an int? Robust and clear error handling is a plus (instead of returning zero ).
...
Int to Char in C#
...e.WriteLine((char)49 == '1'); Will give True. As will char c = (char)49; string s = "1two3"; Console.WriteLine(c == s[0]); Using this cast is perfectly fine. Your explanation does not provide a valid example of it not working. Furthermore, Console.WriteLine((char)49 == 1); is false which essenti...
Python, remove all non-alphabet chars from string
...I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
...
How should one use std::optional?
...plest example I can think of:
std::optional<int> try_parse_int(std::string s)
{
//try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), but using std::op...
Unmangling the result of std::type_info::name
...ures.
In file type.hpp
#ifndef TYPE_HPP
#define TYPE_HPP
#include <string>
#include <typeinfo>
std::string demangle(const char* name);
template <class T>
std::string type(const T& t) {
return demangle(typeid(t).name());
}
#endif
In file type.cpp (requires C++11)
...
Number of occurrences of a character in a string [duplicate]
...ber of occurrences of a certain character such as & in the following string.
6 Answers
...
Excel: last character/string match in a string
Is there an efficient way to identify the last character/string match in a string using base functions? I.e. not the last character/string of the string, but the position of a character/string's last occurrence in a string. Search and find both work left-to-right so I can't think how t...
What is the canonical way to check for errors using the CUDA runtime API?
...functions like cudaGetLastError , cudaPeekAtLastError , and cudaGetErrorString , but what is the best way to put these together to reliably catch and report errors without requiring lots of extra code?
...
How to match “any character” in regular expression?
... want a simple test harness in Java, here's one for you to play with:
String[] tests = {
"AAA123",
"ABCDEFGH123",
"XXXX123",
"XYZ123ABC",
"123123",
"X123",
"123",
};
for (String test : tests) {
System.out.println(test + " "...