NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(?<=title\\>).*(?=</title)" options:0 error:&error]; if (regex != nil) { NSTextCheckingResult *firstMatch=[regex firstMatchInStrin
strObj.search(rgExp)Method. Returns the position of the first substring match in a regular expression search. strObj.split([separator[,limit]])Method. Returns the array of strings that results when a string is separated into substrings. Theseparatorparameter can contain either a separator symbol...
to match any string that contains any characters that arenotthe letter A. To invoke a substring, use$n(0 <=n<= 9), wherenis the order of appearance of capture group in the regular expression, from left to right, from outside to inside, then from top to bottom. Should you use$0or/...
Example of using metacharacters in a single-quoted string constant This example uses the backslash as part of an escape sequence in a regular expression that searches for a question mark (?). Create a table and insert a row that contains a single backslash in one column and a question mark...
Note:In the examples that follow, assume that any literal string consisting exclusively of alphanumeric characters is a regular expression that matches itself. For example, the stringabcis a regular expression matching any string that contains exactly the textabcas a substring. ...
With a regular expression, we captureall words from a sentence. string pattern = @"\b(\w+\s*)+\." We use the + quantifier for the(+\s*) group. The group then contains all captures words of the sentence. foreach (Capture capture in match[i].Captures) { Console.WriteLine...
Next, find a substring at a specific position by using the syntax below. mysql> SELECT customer_id, first_name, last_name FROM customers WHERE first_name REGEXP '^..NE'; Output. +---+---+---+ | customer_id | first_name | last_name | +---+---+---+ | 1 | JANE | SMITH...
If either str or expression is a cell array of character vectors or a string array, and the other is a character vector or a string scalar, then the output is a cell array with the same dimensions as the input array. Each cell contains a 1-by-n cell array of character vectors. If ...
The Regex.Matches method is called with regular expression options set to RegexOptions.IgnoreCase. Therefore, the match operation is case-insensitive, and the example identifies the substring "This this" as a duplication. Note that the input string includes the substring "this? This". However, bec...
The regular expression\p{Sc}+\s*\d+that's used in this example verifies that the input string has a currency symbol and at least one decimal digit. The pattern is defined as shown in the following table: PatternDescription \p{Sc}+Matches one or more characters in the Unicode Symbol, Cu...