perl chr

All numbers have the same format internally in prel. In fact the Perl use double-precision floating-point value to store numbers. Creating charaters by code point: CHR (), and ord () metheds. E.g. $alef = chr(0x05df) ;$code_point = ord('d') ;  In

Process processing functions 1. Process Start functionFunction name EvalCall Syntax eval (string)The commentary considers a string as a Perl statement execution.When executed correctly, the system variable $@ is an empty string, and if there is an

Network programming is a mysterious and complex art, and of course it is also very interesting. The PERL language provides a wide range of TCP/IP network functions, all of which are directly derived from the C language socket library

Need to modify according to your actual environment Oh ************************************************1. Collect the AWR report sample Awrreport.sql--the script is executed with a user with DBA authority, and the normal user does not have access to

The comparison between POSIX and Perl-compatible regular expressions (preg_match, preg_replace ,. First, let's take a look at the POSIX regular expression's two main functions: ereg function :( regular expression matching) format: intereg

The comparison between POSIX and Perl-compatible regular expressions (preg_match, preg_replace, ereg, and ereg_replace). For more information, see. First, let's take a look at the two main functions of POSIX-style regular expressions: Ereg function:

Perl Common function set 2 I. Process processing functions1. Process startup FunctionFunction Name evalCall the syntax eval_r (string)The description regards string as a Perl statement execution.After the command is correctly executed, the

First look at the two main functions of the POSIX-style regular expression: Ereg function: (Regular expression match) Format: int ereg (string pattern, string string [, array &regs]) Note: the Preg_match () function that uses Perl-compatible

Let's take a look at the two main functions of the POSIX-style regular expression: Ereg function: (Regular expression matching) Format: int ereg (string pattern, string string [, array &regs]) Note: the Preg_match () function that uses

Introduction to the Perl language instructions for a scalar scalar constant numeric string number and string conversion scalar variable Print output result comparison operator get user input undef value scalar context two list array list arrays note