Going down your list: “Unicode” isn’t an encoding, although unfortunately, a lot of documentation imprecisely uses it to refer to whichever Unicode encoding that particular system uses by default. On Windows and Java, this often means UTF-16; in many other places, it means UTF-8. Properly, Unicode refers to the abstract character set itself, not to … Read more
Unfortunately, the file.encoding property has to be specified as the JVM starts up; by the time your main method is entered, the character encoding used by String.getBytes() and the default constructors of InputStreamReader and OutputStreamWriter has been permanently cached. As Edward Grech points out, in a special case like this, the environment variable JAVA_TOOL_OPTIONS can … Read more
Try using the non-breaking hyphen ‑. I’ve replaced the dash with that character in your jsfiddle, shrunk the frame down as small as it can go, and the line doesn’t split there any more.
Your first mistake is thinking that ASCII encoding and Base64 encoding are interchangeable. They are not. They are used for different purposes. When you encode text in ASCII, you start with a text string and convert it to a sequence of bytes. When you encode data in Base64, you start with a sequence of bytes … Read more
In Python 3, UTF-8 is the default source encoding (see PEP 3120), so Unicode characters can be used anywhere. In Python 2, you can declare in the source code header: # -*- coding: utf-8 -*- …. This is described in PEP 0263. Then you can use UTF-8 in strings: # -*- coding: utf-8 -*- u … Read more
UTF-8 is a variable-length encoding. In the case of UTF-8, this means that storing one code point requires one to four bytes. However, MySQL’s encoding called “utf8” (alias of “utf8mb3”) only stores a maximum of three bytes per code point. So the character set “utf8″/”utf8mb3” cannot store all Unicode code points: it only supports the … Read more
UTF-8 is a multibyte encoding that can represent any Unicode character. ISO 8859-1 is a single-byte encoding that can represent the first 256 Unicode characters. Both encode ASCII exactly the same way.
Use the ALTER DATABASE and ALTER TABLE commands. ALTER DATABASE databasename CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; ALTER TABLE tablename CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; Or if you’re still on MySQL 5.5.2 or older which didn’t support 4-byte UTF-8, use utf8 instead of utf8mb4: ALTER DATABASE databasename CHARACTER SET utf8 COLLATE utf8_unicode_ci; ALTER TABLE … Read more
The UTF-8 BOM is a sequence of bytes at the start of a text stream (0xEF, 0xBB, 0xBF) that allows the reader to more reliably guess a file as being encoded in UTF-8. Normally, the BOM is used to signal the endianness of an encoding, but since endianness is irrelevant to UTF-8, the BOM is … Read more
To expand on the answers others have given: We’ve got lots of languages with lots of characters that computers should ideally display. Unicode assigns each character a unique number, or code point. Computers deal with such numbers as bytes… skipping a bit of history here and ignoring memory addressing issues, 8-bit computers would treat an … Read more