How Can Go Efficiently Load Entire Files into Strings?

Loading Files into Strings: A Solution for Large File Handling

When working with numerous small files, line-by-line processing can prove time-consuming. Go offers a convenient solution to read entire files as strings. Understanding how to utilize this functionality is crucial for efficient file handling applications.

Reading Files into Strings

To read a whole file into a string variable in Go, leverage the ioutil package's ReadFile function:

func ReadFile(filename string) ([]byte, error)

Upon successfully reading a file, ReadFile returns its contents as a byte slice and nil as the error. Note that, unlike line-by-line reading, ReadFile doesn't consider an end-of-file (EOF) as an error since it reads the complete file.

Converting Byte Slices to Strings

Although ReadFile returns a byte slice, it can easily be converted to a string if necessary:

s := string(buf)

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