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#pragma once
#include <util/generic/string.h>
/**
* Search the environment list provided by the host environment for associated variable.
*
* @param key String identifying the name of the environmental variable to look for
* @param def String that returns if environmental variable not found by key
*
* @return String that is associated with the matched environment variable or empty string if
* such variable is missing.
*
* @note Use it only in pair with `SetEnv` as there may be inconsistency in their behaviour
* otherwise.
* @note Calls to `GetEnv` and `SetEnv` from different threads must be synchronized.
* @see SetEnv
*/
TString GetEnv(const TString& key, const TString& def = TString());
/**
* Add or change environment variable provided by the host environment.
*
* @key String identifying the name of the environment variable to set or change
* @value Value to assign
* @note Use it only in pair with `GetEnv` as there may be inconsistency in their behaviour
* otherwise.
* @note Calls to `GetEnv` and `SetEnv` from different threads must be synchronized.
* @see GetEnv
*/
void SetEnv(const TString& key, const TString& value);
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