You may want to learn J if you read "J for C programmers" - https://www.jsoftware.com/docs/help807/jforc/contents.htm https://www.jsoftware.com/docs/help807/jfo

You may want to learn J if you read "J for C programmers" - https://www.jsoftware.com/docs/help807/jforc/contents.htm https://www.jsoftware.com/docs/help807/jforc/contents.htm . A great book.