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Function std.exception.errnoEnforce

If !!value is true, value is returned. Otherwise, new ErrnoException(msg) is thrown. ErrnoException assumes that the last operation set errno to an error code.

Prototype

T errnoEnforce(T, string file, ulong line)(
  T value,
  string msg = null
);

Example

auto f = errnoEnforce(fopen("data.txt"));
auto line = readln(f);
enforce(line.length); // expect a non-empty line

Authors

Andrei Alexandrescu and Jonathan M Davis

License

Boost License 1.0

Comments