String#

The String type provides a variety of methods for string manipulation and analysis.

is_empty()#

Checks if the string is empty.

Return Type: Boolean

Example:

let empty = "".is_empty(); // true
let not_empty = "hello".is_empty(); // false

to_uppercase()#

Converts all characters in the string to uppercase.

Return Type: String

Example:

let upper = "hello".to_uppercase(); // "HELLO"

to_lowercase()#

Converts all characters in the string to lowercase.

Return Type: String

Example:

let lower = "HELLO".to_lowercase(); // "hello"

trim()#

Removes whitespace from both ends of the string.

Return Type: String

Example:

let trimmed = "  hello  ".trim(); // "hello"

trim_start()#

Removes whitespace from the start of the string.

Return Type: String

Example:

let trimmed = "  hello".trim_start(); // "hello"

trim_end()#

Removes whitespace from the end of the string.

Return Type: String

Example:

let trimmed = "hello  ".trim_end(); // "hello"

contains(substr: string)#

Checks if the string contains the specified substring.

Parameters:

• substr: The substring to search for.

Return Type: Boolean

Example:

let result = "hello world".contains("world"); // true

starts_with(prefix: string)#

Checks if the string starts with the specified prefix.

Parameters:

• prefix: The prefix to check.

Return Type: Boolean

Example:

let result = "hello world".starts_with("hello"); // true

ends_with(suffix: string)#

Checks if the string ends with the specified suffix.

Parameters:

• suffix: The suffix to check.

Return Type: Boolean

Example:

let result = "hello world".ends_with("world"); // true

index_of(substr: string, start?: number)#

Finds the index of the first occurrence of the substring, starting from the specified position.

Parameters:

• substr: The substring to search for.
• start: The position to start the search from (optional).

Return Type: Number

Example:

let index = "hello world".index_of("world"); // 6

last_index_of(substr: string)#

Finds the index of the last occurrence of the substring.

Parameters:

• substr: The substring to search for.

Return Type: Number

Example:

let index = "hello world world".last_index_of("world"); // 12

substring(start: number, end?: number)#

Extracts a substring from the string, starting and ending at the specified indices.

Parameters:

• start: The starting index.
• end: The ending index (optional).

Return Type: String

Example:

let sub = "hello world".substring(0, 5); // "hello"

slice(start: number, end?: number)#

Extracts a section of the string and returns it as a new string, without modifying the original string.

Parameters:

• start: The starting index.
• end: The ending index (optional).

Return Type: String

Example:

let slice = "hello world".slice(0, 5); // "hello"

split(delimiter: string)#

Splits the string into an array of substrings using the specified delimiter.

Parameters:

• delimiter: The delimiter to split the string by.

Return Type: Array<String>

Example:

let parts = "hello world".split(" "); // ["hello", "world"]

join(array: Array)#

Joins an array of strings into a single string, with the original string as the separator.

Parameters:

• array: The array of strings to join.

Return Type: String

Example:

let joined = ",".join(["a", "b", "c"]); // "a,b,c"

regex_match(pattern: string)#

Checks if the string matches the specified regular expression pattern.

Parameters:

• pattern: The regex pattern to match.

Return Type: Boolean

Example:

let match = "hello".regex_match("^h"); // true

regex_replace(pattern: string, replacement: string)#

Replaces occurrences of the regex pattern with the replacement string.

Parameters:

• pattern: The regex pattern to replace.
• replacement: The string to replace matches with.

Return Type: String

Example:

let replaced = "hello world".regex_replace("world", "there"); // "hello there"

repeat(count: number)#

Repeats the string the specified number of times.

Parameters:

• count: The number of times to repeat the string.

Return Type: String

Example:

let repeated = "ha".repeat(3); // "hahaha"

reverse()#

Reverses the characters in the string.

Return Type: String

Example:

let reversed = "hello".reverse(); // "olleh"

replace(from: string, to: string)#

Replaces occurrences of a substring with another substring.

Parameters:

• from: The substring to replace.
• to: The substring to replace with.

Return Type: String

Example:

let replaced = "hello world".replace("world", "there"); // "hello there"