---
name: "ACE_Pair"
section: "3"
platform: "linux"
package: "libace-doc"
version: "5.0.7-4"
release: "Debian 2.2 (Potato)"
platforms: ["linux"]
url: "https://new.carta.tech/ACE_Pair"
---

# ACE\_Pair(3)

## NAME

ACE\_Pair

## SYNOPSIS

```
#include <ace/Pair_T.h>
template<class T1, class T2>
class ACE_Pair
{
  public:
    typedef T1 first_type;
    typedef T2 second_type;
    ACE_Pair (const T1 &t1, const T2 &t2);
    ACE_Pair (void);
    T1 &first (void);
    void first (const T1 &t1);
    T2 &second (void);
    void second (const T2 &t2);
  protected:
    T1 first_;
    T2 second_;
};
```

## DESCRIPTION

Similar to the STL pair.

## Traits.

```
typedef T1 first_type;
```

```
typedef T2 second_type;
```

## Initialization and termination methods.

```
ACE_Pair (const T1 &t1, const T2 &t2);
```

Constructor.

```
ACE_Pair (void);
```

Default constructor.

```
T1 &first (void);
```

```
void first (const T1 &t1);
```

Get/Set first.

```
T2 &second (void);
```

```
void second (const T2 &t2);
```

Access second.

## AUTHOR

Irfan Pyarali

## TITLE

Defines a pair.

## LIBRARY

ace