Update (2021) – Java 17 now includes java.util.HexFormat (only took 25 years): HexFormat.of().parseHex(s) For older versions of Java: Here’s a solution that I think is better than any posted so far: /* s must be an even-length string. */ public static byte[] hexStringToByteArray(String s) { int len = s.length(); byte[] data = new byte[len / … Read more
767 bytes in MySQL version 5.6 (and prior versions), is the stated prefix limitation for InnoDB tables. It’s 1,000 bytes long for MyISAM tables. This limit has been increased to 3072 bytes In MySQL version 5.7 (and upwards). You also have to be aware that if you set an index on a big char or … Read more
You opened the file in binary mode: with open(fname, ‘rb’) as f: This means that all data read from the file is returned as bytes objects, not str. You cannot then use a string in a containment test: if ‘some-pattern’ in tmp: continue You’d have to use a bytes object to test against tmp instead: … Read more
If you already have a byte array then you will need to know what type of encoding was used to make it into that byte array. For example, if the byte array was created like this: byte[] bytes = Encoding.ASCII.GetBytes(someString); You will need to turn it back into a string like this: string someString = … Read more