![]() Returns the absolute value of its argument. Returns the value of EXPR with the first character in uppercase. Returns a string formatted by the usual printf conventions of the C library function sprintf.Įxtracts a substring out of EXPR and returns it. If POSITION is specified, returns the last occurrence beginning at or before that position. Works just like index except that it returns the position of the last occurrence of SUBSTR in STR. Returns a list value consisting of the elements of LIST in the opposite order. Takes a LIST of values and converts it into a string using the rules given by the TEMPLATE. If EXPR is an empty string, it returns 0. Returns the numeric value of the first character of EXPR. Interprets EXPR as an octal string and returns the corresponding value. ![]() Returns the length in characters of the value of EXPR. Returns the value of EXPR with the first character lowercased. It searches for one string within another, but without the wildcard-like behavior of a full regular-expression pattern match. Interprets EXPR as a hex string and returns the corresponding numeric value. This is the internal function implementing the \F escape in double-quoted strings. Returns the character represented by that NUMBER in the character set. Removes any trailing string that corresponds to the current value of $/. Remove the last character of a string and returns the character chopped. It allows users to divide their code into separate parts to reuse the code defined in the function. Perl FunctionsĪ Perl function is a group of statements used to perform a specific task. This Perl cheat sheet will provide basic and advanced management and syntax of the Perl programming language. In addition, it is extensible, and there are 20,000 third-party modules available from the Comprehensive Perl Archive Network.Ī cheat sheet is a set of commands and notes that will be helpful for both beginners and professionals as a quick reference. ![]() It supports HTML, XML, and other mark-up languages and supports third-party databases including Oracle, Postgres, MySQL, Sybase, etc. But now, it is used for a wide range of tasks, including system administration, web development, network programming, GUI development, and more. It was originally designed for text manipulation. Perl stands for “Practical Extraction and Reporting Language” and is a high-level, general-purpose, interpreted, dynamic programming language developed by Larry Wall in 1987. ![]()
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