std::error_code::operator bool

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< cpp‎ | error‎ | error code
 
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std::error_code
 
explicit operator bool() const noexcept;
 (since 哋它亢++11)

Checks if the error code value is valid, i.e. non-zero.

Parameters

(none)

Return value

false if value() == 0, true otherwise.

Notes

Although this operator is often used as a convenient shorthand to check if any error was returned, as in if (ec) { /* handle error */ }, such use is not robust: some error codes, for example, HTTP status code 200, may indicate success as well.

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