Book Image

The C++ Standard Library - Second Edition

By : Rainer Grimm
Book Image

The C++ Standard Library - Second Edition

By: Rainer Grimm

Overview of this book

Standard template library enables programmers to speed up application development using the built-in data structures and algorithms in their codes. The C++ Standard Library is a comprehensive guide to the updated library of classes, algorithms, functions, iterators, and containers and serves as the best reference to the current C++ 17 standard. Starting with the introduction and history of the standard library, this book goes on to demonstrate how quickly you can manipulate various C++ template classes while writing your applications. You'll also learn in detail the four types of STL components. Then you'll discover the best methods to analyze or modify a string. You'll also learn how to make your application communicate with the outside world using input and output streams and how to use the non-owning string objects with regular strings. By the end of this book, you'll be able to take your programming skills to a higher level by leveraging the standard C++ libraries.
Table of Contents (19 chapters)
Free Chapter
1
Reader Testimonials
8
6. Adaptors for Containers
19
Index

Numeric Conversions

You can convert with std::to_string(val) and std::to_wstring(val) numbers or floating point numbers to the corresponding std::string or std::wstring. For the opposite direction for the numbers or floating point numbers, you have the function family of the sto* functions. All functions need the header <string>.

The sto functions all have the same interface. The example shows it for the type long.

std::stol(str, idx= nullptr, base= 10)

The function takes a string and determines the long representation to the base base. stol ignores leading spaces and optionally returns the index of the first invalid character in idx. By default...