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

13. Regular Expressions

Regular expression is a language for describing text patterns. They need the header <regex>.

Regular expressions are a powerful tool for the following tasks:

  • Check if a text matches a text pattern: std::regex_match
  • Search for a text pattern in a text: std::regex_search
  • Replace a text pattern with a text: std::regex_replace
  • Iterate through all text patterns in a text: std::regex_iterator and std::regex_token_iterator

C++ supports six different grammars for regular expressions. By default, the ECMAScript grammar is used. This one is the most powerful grammar of the six grammars and is quite similar to the grammar used in Perl 5. The other five grammars are the basic, extended, awk, grep and egrep grammars.