In the Ruby language, the object is the basic unit, and all of the elements can be said to be objects. As previously understood for object-oriented programs, an object is a set of programs that contains a collection of specific properties and
Ruby's Literal builder
Most of Ruby's built-in classes can be instantiated using new:
str = string.newarr = array.newSome classes cannot be instantiated using new, such as the Integer class. Some built-in classes can use a literal constructor, or
Ruby Getting Started notesEverything is the object"Hello". LengthMethodDefinition: def start end endNaming generally uses underscores to separate wordsYou can embed an expression in a stringreturn value: A) return+ return value B) function The value
Copy codeThe Code is as follows:// Static method of String objectObject. extend (String ,{Interpret: function (value ){Return value = null? '': String (value );},SpecialChar :{'\ B': '\ B ','\ T':' \ t ','\ N':' \ n ','\ F':' \ F ','\ R':' \ R ','\\'
Use the String#strip method to remove all spaces
The code is as follows
Copy Code
"Hello". Strip #=> "Hello""Tgoodbyern". Strip #=> "Goodbye"
In addition, Lstrip and Rstrip remove the spaces at the left and
setting up IRB and RI Enter ruby-v to see if the Ruby version can be displayed Now you can ConfigurationIrbthe.IRB is an interactive Ruby command-line tool that executes and gives results as soon as you enter a sentence . The default IRB is not
From: http://www.ibm.com/developerworks/cn/java/j-javadev2-17/
Message Transfer queues are common in a range of software architectures and domains, including financial systems, healthcare, and tourism. However, message-oriented middleware (MOM)-a
First, start the Python journey interactive mode1.Ctrl + D Enter an EOF character to exit the interpreter, or you can type exit () to exit2. #!/usr/bin/env python3 in #! called Shebang, the purpose is to tell the shell to use the Python interpreter
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