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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...
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;
...
Case-insensitive string comparison in C++ [closed]
What is the best way of doing case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase?
...
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
...
.NET / C# - Convert char[] to string
What is the proper way to turn a char[] into a string?
7 Answers
7
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In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
... code for making md5 hashes. One part converts the results from bytes to a string of hex digits:
28 Answers
...
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?
...
Using awk to print all columns from the nth to the last
...l end up with an initial delimiter ($1 is still included, just as an empty string). You can strip that with sed though: awk -F, -vOFS=, '{$1=""; print $0}' | sed 's/^,//'
– cherdt
Jul 7 '16 at 23:55
...
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)
...
How to convert a String into an ArrayList?
In my String, I can have an arbitrary number of words which are comma separated. I wanted each word added into an ArrayList. E.g.:
...