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UTF-8 Encoding
UTF-8 is a variable-length character encoding standard used for electronic communication1. It is based on the Unicode Standard, which is a universal system for representing characters from different languages and scripts2.
UTF-8 can encode all 1,112,064 valid Unicode code points using one to four bytes (8-bit units) per character1. The first 128 characters of Unicode, which correspond to the ASCII characters, are encoded using a single byte with the same binary value as ASCII1. This means that valid ASCII text is also valid UTF-8-encoded text.
UTF-8 has several advantages over other encodings:
It is backward compatible with ASCII, which is widely used in web protocols, programming languages, and text files1.
It can represent any character in the Unicode standard, which covers most of the world's writing systems2.
It is self-synchronizing, which means that it can recover from errors or data loss by resuming at the next valid code point1.
It is efficient, as it uses fewer bytes for common characters and avoids wasting space with padding or byte order marks3.
UTF-8 is the dominant encoding for the World Wide Web and internet technologies, accounting for 98.1% of all web pages as of 20241. It is also widely supported by modern operating systems, software applications, and standards such as JSON1.
To use UTF-8 encoding in HTML documents, you can specify the charset attribute in the tag:
<meta charset="UTF-8">To use UTF-8 encoding in other text files, such as source code or data files, you can save them with UTF-8 encoding in your text editor or IDE. Alternatively, you can use a byte order mark (BOM) at the beginning of the file to indicate the encoding. However, some applications may not recognize or handle the BOM correctly, so it is generally recommended to avoid using it unless necessary3.
Learn more✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.python - What is a unicode string? - Stack Overflow
A string is a sequence of chars while a unicode is a sequence of "pointers". The unicode is an in-memory representation of the sequence and every symbol on it is not a char but a number (in hex format) intended to select a char in a map.Explore further
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