mygetenv

C++ Function Reference

1 Signature

static const char * mygetenv(const char *name, const char *unset)

2 Description

Safe environment variable retrieval with default.

3 Parameters

name (const char *): Environment variable name
unset (const char *): Default value if not found

4 Returns

const char* Value or default string

5 Details

nameEnvironment variable name unsetDefault value if not found const char* Value or default string

6 Call Graph

7 Source Code

Implementation

File: inst/include/Utilities/openme-utils.hpp • Lines 197-200

static const char *mygetenv(const char *name, const char *unset) {
    const char *ans = getenv(name);
    return (ans==NULL || ans[0]=='\0') ? unset : ans;
}

8 Usage Example

#include "BigDataStatMeth.hpp"

// Example usage
auto result = mygetenv(...);

---
title: "mygetenv"
subtitle: "C++ Function Reference"
---

## Signature

```cpp
static const char * mygetenv(const char *name, const char *unset)
```

## Description

Safe environment variable retrieval with default.

## Parameters

- `name` (`const char *`): Environment variable name
- `unset` (`const char *`): Default value if not found

## Returns

const char* Value or default string

## Details

nameEnvironment variable name unsetDefault value if not found const char* Value or default string

## Call Graph

::: {.diagram-section}
<object type="image/svg+xml" data="images/_big_data_stat_meth_8hpp_ace7111be8bf64ef7c9e628304fa42aef_cgraph.svg" class="class-diagram">
  <img src="images/_big_data_stat_meth_8hpp_ace7111be8bf64ef7c9e628304fa42aef_cgraph.svg" alt="Function dependencies"/>
</object>
:::

## Source Code

::: {.callout-note collapse="true"}
### Implementation

**File:** `inst/include/Utilities/openme-utils.hpp` • **Lines 197-200**

```cpp
static const char *mygetenv(const char *name, const char *unset) {
    const char *ans = getenv(name);
    return (ans==NULL || ans[0]=='\0') ? unset : ans;
}
```
:::

## Usage Example

```cpp
#include "BigDataStatMeth.hpp"

// Example usage
auto result = mygetenv(...);
```