ruby - Anyone knows what's going on with "weird" characters at the beginning of a string? -


i've run strange issue when trying detect string among array of them. knows what's going on here?

(rdb:1) p magic_string "time period" (rdb:1) p magic_string.class string (rdb:1) p magic_string == "time period" false (rdb:1) p "time period".length 11 (rdb:1) p magic_string.length 14 (rdb:1) p magic_string[0].chr "\357" (rdb:1) p magic_string[1].chr "\273" (rdb:1) p magic_string[2].chr "\277" (rdb:1) p magic_string[3].chr "t"

your string contains 3 bytes (bom) @ beginning indicate encoding utf-8.

q: bom?

a: byte order mark (bom) consists of character code u+feff @ beginning of data stream, can used signature defining byte order , encoding form, of unmarked plaintext files. under higher level protocols, use of bom may mandatory (or prohibited) in unicode data stream defined in protocol.

source


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