fmtErrorfread

fmtErrorfread is a hypothetical function that combines the functionality of formatting output and reading input, specifically designed to read a formatted string from a source. While not a standard Go library function, it conceptually represents a common pattern in programming: parsing structured data from an input stream.

In a practical implementation, such a function would likely take a format string and a source from which to read. The format string would define the expected structure and types of data to be extracted. The source could be a file, a network connection, or even a string buffer. The function would then attempt to read from the source and parse the data according to the provided format string, returning the parsed values and any error encountered.

For example, if the format string was "Name: %s, Age: %d", and the input stream contained "Name: Alice, Age: 30", fmtErrorfread would attempt to extract "Alice" as a string and "30" as an integer. If the input did not match the format, or if an I/O error occurred during reading, the function would return an appropriate error. This pattern is often seen in scenarios requiring parsing configuration files, command-line arguments, or data from external systems where a predictable structure is expected. The "error" part of the hypothetical name emphasizes the importance of error handling in such parsing operations.