cpp17.tar.gz

C++17

C++20

Templates are one of the many powerful features of Modern C++ programming. And with each new C++ standard, they become more important. 

Templates provide an efficient way to make your code more flexible and reusable, this way you can avoid repeating code that would otherwise be identical except for different types. Templates also give you the ability to provide abstraction without a performance penalty.

However, templates can be difficult to apply, can be counterintuitive, and have tricky error messages.

This course gives you the necessary information to overcome these hurdles and dive into the advanced topics. You’ll visit the basics such as function and class templates, and then explore the details to templates such as instantiation and fold expressions. Our journey also includes techniques based on templates, the design, and future directions of templates such as concepts. Based on this exhaustive tour of templates, a basic understanding of C++ is sufficient to master this course.

Let’s get started!

Generic Programming Templates in C++

## Template Arguments
Template arguments can, in general, automatically be deduced for function templates.
The compiler deduces the template arguments for the function arguments. From the user's perspective, function templates feel like functions.

**Conversion:**
   * The compiler uses simple conversions for deducing the template
arguments from the function arguments.
   * The compiler removes `const` or `volatile` from the function arguments and converts C-arrays and functions to pointers.

Template argument deduction for function templates:
```c++
template <typename T>
void func(ParamType param);
```

Two datatypes were deduced:
* `T`
* `ParamType`

`ParamType` can be 
* Reference or pointer
* Universal reference(`&&`) 
* Value (copy)
 


# Template Arguments
Template arguments can, in general, automatically be deduced for function templates.
The compiler deduces the template arguments for the function arguments. From the user's perspective, function templates feel like functions.

**Conversion:**
   * The compiler uses simple conversions for deducing the template
arguments from the function arguments.
   * The compiler removes `const` or `volatile` from the function arguments and converts C-arrays and functions to pointers.

Template argument deduction for function templates:
```c++
template <typename T>
void func(ParamType param);
```

Two datatypes were deduced:
* `T`
* `ParamType`

`ParamType` can be 
* Reference or pointer
* Universal reference(`&&`) 
* Value (copy)
 


In this lesson, we'll learn about template arguments.

Introduction

Basics

Details

Techniques

Design

Future

Conclusion

Template Arguments

Template Arguments