This is the built-in string class (and the one used by GDScript). It supports Unicode and provides all necessary means for string handling. Strings are reference-counted and use a copy-on-write approach, so passing them around is cheap in resources.
Converts a string containing a binary number into an integer. Binary strings can either be prefixed with [code]0b[/code] or not, and they can also start with a [code]-[/code] before the optional prefix.
Returns a copy of the string with escaped characters replaced by their meanings. Supported escape sequences are [code]\'[/code], [code]\"[/code], [code]\\[/code], [code]\a[/code], [code]\b[/code], [code]\f[/code], [code]\n[/code], [code]\r[/code], [code]\t[/code], [code]\v[/code].
Changes the case of some letters. Replaces underscores with spaces, adds spaces before in-word uppercase characters, converts all letters to lowercase, then capitalizes the first letter and every letter following a space character. For [code]capitalize camelCase mixed_with_underscores[/code], it will return [code]Capitalize Camel Case Mixed With Underscores[/code].
Performs a case-sensitive comparison to another string. Returns [code]-1[/code] if less than, [code]1[/code] if greater than, or [code]0[/code] if equal. "less than" or "greater than" are determined by the [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode code points[/url] of each string, which roughly matches the alphabetical order.
[b]Behavior with different string lengths:[/b] Returns [code]1[/code] if the "base" string is longer than the [param to] string or [code]-1[/code] if the "base" string is shorter than the [param to] string. Keep in mind this length is determined by the number of Unicode codepoints, [i]not[/i] the actual visible characters.
[b]Behavior with empty strings:[/b] Returns [code]-1[/code] if the "base" string is empty, [code]1[/code] if the [param to] string is empty or [code]0[/code] if both strings are empty.
To get a boolean result from a string comparison, use the [code]==[/code] operator instead. See also [method nocasecmp_to] and [method naturalnocasecmp_to].
Directly converts an decimal integer to a unicode character. Tables of these characters can be found in various locations, for example [url=https://unicodelookup.com/]here.[/url]
[codeblock]
print(String.chr(65)) # Prints "A"
print(String.chr(129302)) # Prints "🤖" (robot face emoji)
Returns the number of occurrences of substring [param what] between [param from] and [param to] positions. If [param from] and [param to] equals 0 the whole string will be used. If only [param to] equals 0 the remained substring will be used.
Returns the number of occurrences of substring [param what] (ignoring case) between [param from] and [param to] positions. If [param from] and [param to] equals 0 the whole string will be used. If only [param to] equals 0 the remained substring will be used.
Returns the index of the [b]first[/b] case-sensitive occurrence of the specified string in this instance, or [code]-1[/code]. Optionally, the starting search index can be specified, continuing to the end of the string.
Returns the index of the [b]first[/b] case-insensitive occurrence of the specified string in this instance, or [code]-1[/code]. Optionally, the starting search index can be specified, continuing to the end of the string.
Formats the string by replacing all occurrences of [param placeholder] with the elements of [param values].
[param values] can be a [Dictionary] or an [Array]. Any underscores in [param placeholder] will be replaced with the corresponding keys in advance. Array elements use their index as keys.
Some additional handling is performed when [param values] is an array. If [param placeholder] does not contain an underscore, the elements of the array will be used to replace one occurrence of the placeholder in turn; If an array element is another 2-element array, it'll be interpreted as a key-value pair.
Returns the extension without the leading period character ([code].[/code]) if the string is a valid file name or path. If the string does not contain an extension, returns an empty string instead.
Splits a string using a Unicode character with code [param delimiter] and returns a substring at index [param slice]. Returns an empty string if the index doesn't exist.
Returns the 32-bit hash value representing the string's contents.
[b]Note:[/b] [String]s with equal content will always produce identical hash values. However, the reverse is not true. Returning identical hash values does [i]not[/i] imply the strings are equal, because different strings can have identical hash values due to hash collisions.
Converts a string containing a hexadecimal number into an integer. Hexadecimal strings can either be prefixed with [code]0x[/code] or not, and they can also start with a [code]-[/code] before the optional prefix.
Converts an integer representing a number of bytes into a human-readable form.
Note that this output is in [url=https://en.wikipedia.org/wiki/Binary_prefix#IEC_prefixes]IEC prefix format[/url], and includes [code]B[/code], [code]KiB[/code], [code]MiB[/code], [code]GiB[/code], [code]TiB[/code], [code]PiB[/code], and [code]EiB[/code].
For example, the string can be indented with two tabs using [code]"\t\t"[/code], or four spaces using [code]" "[/code]. The prefix can be any string so it can also be used to comment out strings with e.g. [code]"# "[/code]. See also [method dedent] to remove indentation.
Returns [code]true[/code] if the string is a path to a file or directory and its starting point is explicitly defined. This includes [code]res://[/code], [code]user://[/code], [code]C:\[/code], [code]/[/code], etc.
Returns [code]true[/code] if the string is a path to a file or directory and its starting point is implicitly defined within the context it is being used. The starting point may refer to the current directory ([code]./[/code]), or the current [Node].
Returns [code]true[/code] if this string contains a valid hexadecimal number. If [param with_prefix] is [code]true[/code], then a validity of the hexadecimal number is determined by the [code]0x[/code] prefix, for example: [code]0xDEADC0DE[/code].
Returns [code]true[/code] if this string contains a valid color in hexadecimal HTML notation. Other HTML notations such as named colors or [code]hsl()[/code] colors aren't considered valid by this method and will return [code]false[/code].
Returns [code]true[/code] if this string is a valid identifier. A valid identifier may contain only letters, digits and underscores ([code]_[/code]) and the first character may not be a digit.
Returns [code]true[/code] if this string contains only a well-formatted IPv4 or IPv6 address. This method considers [url=https://en.wikipedia.org/wiki/Reserved_IP_addresses]reserved IP addresses[/url] such as [code]0.0.0.0[/code] as valid.
Returns a number of characters from the left of the string. If negative [param length] is used, the characters are counted downwards from [String]'s length.
Returns a copy of the string with characters removed from the left. The [param chars] argument is a string specifying the set of characters to be removed.
[b]Note:[/b] The [param chars] is not a prefix. See [method trim_prefix] method that will remove a single prefix string rather than a set of characters.
Does a simple case-sensitive expression match, where [code]"*"[/code] matches zero or more arbitrary characters and [code]"?"[/code] matches any single character except a period ([code]"."[/code]). An empty string or empty expression always evaluates to [code]false[/code].
Does a simple case-insensitive expression match, where [code]"*"[/code] matches zero or more arbitrary characters and [code]"?"[/code] matches any single character except a period ([code]"."[/code]). An empty string or empty expression always evaluates to [code]false[/code].
Performs a case-insensitive [i]natural order[/i] comparison to another string. Returns [code]-1[/code] if less than, [code]1[/code] if greater than, or [code]0[/code] if equal. "less than" or "greater than" are determined by the [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode code points[/url] of each string, which roughly matches the alphabetical order. Internally, lowercase characters will be converted to uppercase during the comparison.
When used for sorting, natural order comparison will order suites of numbers as expected by most people. If you sort the numbers from 1 to 10 using natural order, you will get [code][1, 2, 3, ...][/code] instead of [code][1, 10, 2, 3, ...][/code].
[b]Behavior with different string lengths:[/b] Returns [code]1[/code] if the "base" string is longer than the [param to] string or [code]-1[/code] if the "base" string is shorter than the [param to] string. Keep in mind this length is determined by the number of Unicode codepoints, [i]not[/i] the actual visible characters.
[b]Behavior with empty strings:[/b] Returns [code]-1[/code] if the "base" string is empty, [code]1[/code] if the [param to] string is empty or [code]0[/code] if both strings are empty.
Performs a case-insensitive comparison to another string. Returns [code]-1[/code] if less than, [code]1[/code] if greater than, or [code]0[/code] if equal. "less than" or "greater than" are determined by the [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode code points[/url] of each string, which roughly matches the alphabetical order. Internally, lowercase characters will be converted to uppercase during the comparison.
[b]Behavior with different string lengths:[/b] Returns [code]1[/code] if the "base" string is longer than the [param to] string or [code]-1[/code] if the "base" string is shorter than the [param to] string. Keep in mind this length is determined by the number of Unicode codepoints, [i]not[/i] the actual visible characters.
[b]Behavior with empty strings:[/b] Returns [code]-1[/code] if the "base" string is empty, [code]1[/code] if the [param to] string is empty or [code]0[/code] if both strings are empty.
To get a boolean result from a string comparison, use the [code]==[/code] operator instead. See also [method casecmp_to] and [method naturalnocasecmp_to].
The number of decimal places can be specified with [param decimals]. If [param decimals] is [code]-1[/code] (default), decimal places will be automatically adjusted so that the string representation has 14 significant digits (counting both digits to the left and the right of the decimal point).
If the string is a path, this concatenates [param file] at the end of the string as a subpath. E.g. [code]"this/is".path_join("path") == "this/is/path"[/code].
Returns the index of the [b]last[/b] case-sensitive occurrence of the specified string in this instance, or [code]-1[/code]. Optionally, the starting search index can be specified, continuing to the beginning of the string.
Returns the index of the [b]last[/b] case-insensitive occurrence of the specified string in this instance, or [code]-1[/code]. Optionally, the starting search index can be specified, continuing to the beginning of the string.
Returns a number of characters from the right of the string. If negative [param length] is used, the characters are counted downwards from [String]'s length.
Splits the string by a [param delimiter] string and returns an array of the substrings, starting from right. If [param delimiter] is an empty string, each substring will be a single character.
If [param allow_empty] is [code]true[/code], and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
If [param maxsplit] is specified, it defines the number of splits to do from the right up to [param maxsplit]. The default value of 0 means that all items are split, thus giving the same result as [method split].
Returns a copy of the string with characters removed from the right. The [param chars] argument is a string specifying the set of characters to be removed.
[b]Note:[/b] The [param chars] is not a suffix. See [method trim_suffix] method that will remove a single suffix string rather than a set of characters.
Returns the similarity index ([url=https://en.wikipedia.org/wiki/S%C3%B8rensen%E2%80%93Dice_coefficient]Sorensen-Dice coefficient[/url]) of this string compared to another. A result of 1.0 means totally similar, while 0.0 means totally dissimilar.
Splits the string by a [param delimiter] string and returns an array of the substrings. The [param delimiter] can be of any length. If [param delimiter] is an empty string, each substring will be a single character.
If [param allow_empty] is [code]true[/code], and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
If [param maxsplit] is specified, it defines the number of splits to do from the left up to [param maxsplit]. The default value of [code]0[/code] means that all items are split.
If [param allow_empty] is [code]true[/code], and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
Returns a copy of the string stripped of any non-printable character (including tabulations, spaces and line breaks) at the beginning and the end. The optional arguments are used to toggle stripping on the left and right edges respectively.
Returns a copy of the string stripped of any escape character. These include all non-printable control characters of the first page of the ASCII table (< 32), such as tabulation ([code]\t[/code] in C) and newline ([code]\n[/code] and [code]\r[/code]) characters, but not spaces.
Returns part of the string from the position [param from] with length [param len]. Argument [param len] is optional and using [code]-1[/code] will return remaining characters from given position.
Converts the String (which is a character array) to ASCII/Latin-1 encoded [PackedByteArray] (which is an array of bytes). The conversion is faster compared to [method to_utf8_buffer], as this method assumes that all the characters in the String are ASCII/Latin-1 characters, unsupported characters are replaced with spaces.
Converts a string containing a decimal number into a [code]float[/code]. The method will stop on the first non-number character except the first [code].[/code] (decimal point), and [code]e[/code] which is used for exponential.
Converts a string containing an integer number into an [code]int[/code]. The method will remove any non-number character and stop if it encounters a [code].[/code].
Converts the String (which is an array of characters) to UTF-8 encode [PackedByteArray] (which is an array of bytes). The conversion is a bit slower than [method to_ascii_buffer], but supports all UTF-8 characters. Therefore, you should prefer this function over [method to_ascii_buffer].
Removes any characters from the string that are prohibited in [Node] names ([code].[/code] [code]:[/code] [code]@[/code] [code]/[/code] [code]"[/code]).
Returns a copy of the string with special characters escaped using the XML standard. If [param escape_quotes] is [code]true[/code], the single quote ([code]'[/code]) and double quote ([code]"[/code]) characters are also escaped.
Returns [code]true[/code] if the left [String] comes before [param right] in [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode order[/url], which roughly matches the alphabetical order. Useful for sorting.
Returns [code]true[/code] if the left [String] comes before [param right] in [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode order[/url], which roughly matches the alphabetical order, or if both are equal.
Returns [code]true[/code] if the left [String] comes after [param right] in [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode order[/url], which roughly matches the alphabetical order. Useful for sorting.
Returns [code]true[/code] if the left [String] comes after [param right] in [url=https://en.wikipedia.org/wiki/List_of_Unicode_characters]Unicode order[/url], which roughly matches the alphabetical order, or if both are equal.
Returns a new [String] that only contains the character at [param index]. Indices start from [code]0[/code]. If [param index] is greater or equal to [code]0[/code], the character is fetched starting from the beginning of the string. If [param index] is a negative value, it is fetched starting from the end. Accessing a string out-of-bounds will cause a run-time error, pausing the project execution if run from the editor.
