// Case 1

// BAD - no flushing; will yield an assertion

get_log().ts() << "message";

// Case 2

// ok – flushing prior to destruction

get_log().ts() << "message" << std::endl;

// Case 3

// ok - one flush, prior to temp's destruction

{

thread_safe_log temp = get_log();

for ( int idx = 0; idx < 100; ++idx)

    temp.ts() << "message [" << idx << "]\n";

temp.ts() << std::endl;

}

// Case 4

// BAD - no flushing; will yield an assertion

{

thread_safe_log temp = get_log();

for ( int idx = 0; idx < 100; ++idx)

    temp.ts() << "message [" << idx << "]\n";

}

// Case 5

// ok – 100 flushes

{

thread_safe_log temp = get_log();

for ( int idx = 0; idx < 100; ++idx)

    temp.ts() << "message [" << idx << std::endl;

// no need to flush() here; each message has been flushed inside the 'for'

}