Question 1

How to compute SHA256 checksum for a file in Go using checksum?

Accepted Answer

Import the library and use the SHA256sum() function with the file path; it returns the hash string and an error, making integration straightforward. Example: `sha256, err := checksum.SHA256sum("/path/to/file")`.

Question 2

Checksum vs Go's crypto package: which is better for file hashing?

Accepted Answer

Checksum is better for simplicity with large files and a clean API, but Go's crypto package offers more algorithms and flexibility if you're willing to write extra code for streaming or non-file data.

Question 3

Is checksum suitable for hashing files over 10GB?

Accepted Answer

Yes, it's optimized for large files, but performance may depend on disk I/O; it handles memory efficiently by reading in chunks, as implied in the large file support feature.

Question 4

How to install checksum in a Go project?

Accepted Answer

Run `go get github.com/codingsince1985/checksum` and import it in your code; the README shows usage examples with common hash functions for quick setup.

Question 5

Can I use checksum for CRC32 on non-file data?

Accepted Answer

No, it only works with file paths; for strings or bytes, you'd need to use Go's standard hash/crc32 package or create a temporary file, adding overhead.

Question 6

What error handling does checksum provide?

Accepted Answer

Functions return errors for issues like missing files or I/O problems, allowing you to check `err` after calls, as shown in the usage snippet with blank identifiers for simplicity.

checksum

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