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

8. Callable Units

Many of the STL algorithms and containers can be parametrised with callable units or short callables. A callable is something that behaves like a function. Not only are these functions but also function objects and lambda functions. Predicates are special functions that return a boolean as the result. If a predicate has one argument, it’s called a unary predicate if a predicate has two arguments, it’s called a binary predicate. The same holds for functions. A function taking one argument is a unary function; a function taking two arguments is a binary function.