Posts about Ruby
Ruby exception
May 12, 2021 08:00 0 Comment Ruby
Ruby exception, Ruby exception, Grammar, Instance, Use the retry statement, Grammar, Instance, Use the raise statement, Grammar, Instance, Use the ensure statement, Grammar, Instance, Use the else statement, Grammar, Instance, Catch and Throw, Grammar, Instance, Class Exception, Ruby, exception, Exceptions and execution are always linked., If you open a file that doesn't exist and don't handle it properly, your program is cons
Ruby Dir classes and methods
May 12, 2021 08:00 0 Comment Ruby
Ruby Dir classes and methods, Ruby Dir classes and methods, Class method, The instance method, Ruby, Dir classes and methods, Dir is, a directory stream that represents the name of the file used to give the directory in the operating system., Th
Ruby File classes and methods
May 12, 2021 08:00 0 Comment Ruby
Ruby File classes and methods, Ruby File classes and methods, Class method, The instance method, Ruby, File classes and methods, File, represents a, stdio, object connected to a normal file., open returns an instance of the class for a normal file
The input and output of the Ruby file
May 12, 2021 08:00 0 Comment Ruby
The input and output of the Ruby file, The input and output of the Ruby file, Puts statement, Instance, Gets statement, Instance, Putc statement, Instance, The print statement, Instance, Open and close files, File.new method, File.open method, Read and write files, The sysread method, syswrite method, each_byte method, IO.readlines method, IO.foreach method, Rename and delete files, File mode and ownership, File query, The directory in Ruby, Browse the catalog, Create a directory, Delete the directory, Create a file and a temporary directory, Built-in functions, The input, and output of the Ruby file, Ruby provides a complete set of I/O-related methods, implemented in the Kernel module., All I/O methods are de
Ruby iterator
May 12, 2021 08:00 0 Comment Ruby
Ruby iterator, Ruby iterator, Ruby each iterator, Grammar, Instance, Ruby collect iterator, Grammar, Instance, Ruby, iterator, An iterator is, a method supported, by a collection. A, n object that stores a set of data members is called a collection., In Ruby, a
Ruby CGI method
May 12, 2021 09:00 0 Comment Ruby
Ruby CGI method, Ruby CGI method, CGI instantiation method, HTML build method, CGI object properties, Ruby CGI method, The following is a list of methods for CGI classes:, Serial number, Method description, 1, CGI::new([ level="query"]), Create a CGI o
Ruby CGI Cookies
May 12, 2021 09:00 0 Comment Ruby
Ruby CGI Cookies, Ruby CGI Cookies, How do cookies work?, Ruby handles cookies, Ruby CGI Cookies, The HTTP protocol is a stateless protocol., But for a business website, it needs to keep session information between pages., If the
Ruby CGI Sessions
May 12, 2021 09:00 0 Comment Ruby
Ruby CGI Sessions, Ruby CGI Sessions, CGI:: Session class, Ruby CGI Sessions, CGI:: Session can save a persistent session state for the user and the CGI environment, and the session needs to be closed after us
Ruby Sends Mail - SMTP
May 12, 2021 09:00 0 Comment Ruby
Ruby Sends Mail - SMATP, Ruby Sends Mail - SMATP, Use Ruby to send HTML messages, Send a message with attachments, Ruby Sends Mail - SMATP, Simple Mail Transfer Protocol, a simple messaging protocol, is a set of rules used to deliver messages from the source addres
Ruby Socket programming
May 12, 2021 09:00 0 Comment Ruby
Ruby Socket programming, Ruby Socket programming, What is Sockets, Simple client, Simple service, Multi-client TCP service, Tiny web browser, Ruby Socket programming, Ruby provides two levels of access to the network, at the bottom you have access to the operating system, which allows you to
Ruby XML, XSLT and XPath tutorials
May 12, 2021 09:00 0 Comment Ruby
Ruby XML, XSLT and XPath tutorials, Ruby XML, XSLT and XPath tutorials, What is XML?, XML parser structure and API, Resolve and create XML in Ruby, DOM parser, SAX parser, XPath and Ruby, XSLT and Ruby, More information, Ruby XML, XSLT and XPath tutorials, What is XML?, XML refers to the extensible markup language (eXtensible Markup Language)., Extensable markup langua
Ruby Web Services App - SOAP4R
May 12, 2021 09:00 0 Comment Ruby
Ruby Web Services App - SOAP4R, Ruby Web Services App - SOAP4R, What is SOAP?, SOAP4R installation, SOAP4R service, SOAP4R client, Ruby Web Services App - SOAP4R, What is SOAP?, Simple Object Access Protocol (SOAP, written entirely as Simple Object Access Protocol) is a protocol s
Ruby multithreaded
May 12, 2021 09:00 0 Comment Ruby
Ruby multithreaded, Ruby multithreaded, Create a Ruby thread, Thread lifecycle, The thread state, Threads and exceptions, Thread synchronization control, The thread variable, Thread priority, Threads are mutually exclusive, Deadlock, Thread class method, Thread instantiation method, Ruby multithreaded, Each program that is running on the system is a process., Each process contains one or more threads., A thread is a single sequent
Ruby RubyGems
May 12, 2021 09:00 0 Comment Ruby
Ruby RubyGems, Ruby RubyGems, Gem, The build of the gem package, Modify the domestic source, Ruby RubyGems, RubyGems is a package manager for Ruby that provides a standard format for distributing Ruby programs and libraries, as well as a tool