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What is a string in Go language? for this question, this article introduces the corresponding analysis and answer in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.

An Go language string is a sequence of arbitrary bytes of constants.

Go language strings are different from other languages.

Go language strings are different from other languages (Java,C,Python) string bytes in the GE language use UTF-8 encoding to represent Unicode text, so Go language strings are broadened character sequences, each character is represented by one or more characters, which is essentially different from other string types (CJ Java Python 3), which is a fixed width character sequence.

Individual characters in strings in other languages can be indexed by bytes, while Go languages can only be indexed by bytes if the string contains only 7-bit ASCII characters (because they are all represented by a single UTF-8 byte). So does this mean that the Go language is weaker than other languages in string processing? The answer is no, because the Go language supports iterations of one character, and there are a large number of string manipulation functions in the standard library. Finally, we can convert Go strings into Unicode code point slices (type [] rune), which supports direct indexing.

For English text, Go uses 8 bits to represent each byte, while Java or Python requires 16 bits or more. Using UTF-8 coding, the Go language does not need to relate to the sequence of machine codes, nor does it need to encode and decode to use other languages.

Note: each Unicode character has a unique identification number called "code point". In the GE language, a single code point is represented in memory in the form of rune, and rune represents an alias for the int32 type.

Literals, operators, and escapes in the GE language, string literals are created using double quotation marks or back quotation marks. Double quotes are used to create parsable strings and support escaping, but cannot be used to reference multiple lines; backquotes are used to create native string literals, which may consist of multiple lines, but do not support escaping, and can contain all characters except backquotes. Double quotation marks to create parsable strings are the most widely used, while backquotes are used to create native strings for writing multiline messages, HTML, and regular expressions.

Compare string

Comparing strings in the Go language supports regular comparison operations (, =,! =, =). These operators compare byte by byte in memory, but the following three problems often occur when performing a comparison operation:

Some Unicode-encoded characters in ① can be represented by two or more different byte sequences. If we only care about ASCII characters, this problem will not exist, if it is not ASCII characters, then we can use custom standardized functions to isolate and accept these strings.

② users want to treat different characters as the same. For example, characters 2, 2, Ⅱ, and ② can all be regarded as having the same meaning, so when the user enters 2, they have to match these other characters with the same meaning. This can also be solved by customizing standardized functions.

The ordering of ③ characters is related to the type of language.

This is the answer to the question about what is the string in Go language. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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