mirror of
https://github.com/boostorg/optional.git
synced 2025-11-04 09:41:37 +01:00
16 lines
393 B
Markdown
16 lines
393 B
Markdown
|
optional
|
||
|
|
========
|
||
|
|
|
||
|
|
A library for representing optional (nullable) objects in C++.
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
optional<int> readInt(); // this function may return either an int or a not-an-int
|
||
|
|
|
||
|
|
if (optional<int> oi = readInt()) // did I get a real int
|
||
|
|
cout << "my int is: " << *oi; // use my int
|
||
|
|
else
|
||
|
|
cout << "I have no int";
|
||
|
|
```
|
||
|
|
|
||
|
|
For more information refer to the documentation provided with this library.
|