MRPT
2.0.3
mrpt
core
get_env.h
Go to the documentation of this file.
1
/* +------------------------------------------------------------------------+
2
| Mobile Robot Programming Toolkit (MRPT) |
3
| https://www.mrpt.org/ |
4
| |
5
| Copyright (c) 2005-2020, Individual contributors, see AUTHORS file |
6
| See: https://www.mrpt.org/Authors - All rights reserved. |
7
| Released under BSD License. See: https://www.mrpt.org/License |
8
+------------------------------------------------------------------------+ */
9
10
#pragma once
11
12
#include <
mrpt/core/from_string.h
>
13
#include <cstdlib>
14
15
namespace
mrpt
16
{
17
/** Reads an environment variable, with a default value if not present.
18
* \ingroup mrpt_core_grp
19
*/
20
template
<
class
T>
21
inline
T
get_env
(
const
std::string& varname,
const
T& defValue = T())
22
{
23
auto
s = ::getenv(varname.c_str());
24
if
(!s)
return
defValue;
25
return
mrpt::from_string<T>(s, defValue,
false
/*dont throw*/
);
26
}
27
28
}
// namespace mrpt
mrpt::get_env
T get_env(const std::string &varname, const T &defValue=T())
Reads an environment variable, with a default value if not present.
Definition:
get_env.h:21
mrpt
This is the global namespace for all Mobile Robot Programming Toolkit (MRPT) libraries.
Definition:
BaseAppDataSource.h:15
from_string.h
Page generated by
Doxygen 1.8.17
for MRPT 2.0.3 at Fri May 15 23:51:15 UTC 2020