Can Empty Lines Trigger `input.Scan()` to Return False in Go?

Breaking Out of Input.Scan()

In Go, the input.Scan() function is commonly used to read input from the console. While the code provided in the question works effectively, the author sought a way to eliminate the if-clause that checks for the keyword "end" to break out of the loop.

According to the documentation, Scan() returns false when the scan stops, either by reaching the end of the input or encountering an error. However, the author's understanding was that an empty line should trigger a return of false, thereby ending the loop without the need for the if-clause.

Upon examination, the default scanner used in the provided code is actually ScanLines, not ScanWords. ScanLines returns each line of text, stripped of any line endings, and may contain empty lines. Importantly, even the last non-empty line of input will be returned, even if it lacks a line ending.

The scanner ceases operation only when it encounters EOF (End Of File). Therefore, the if-clause in the original code is still necessary to terminate the loop when the user enters "end" to signify the end of input.

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