Explanation: Ruby can not be connected to Database is not a feature of ruby.
What are the features of Ruby?
Features of Ruby
- Ruby is an open-source and is freely available on the Web, but it is subject to a license.
- Ruby is a general-purpose, interpreted programming language.
- Ruby is a true object-oriented programming language.
- Ruby is a server-side scripting language similar to Python and PERL.
Which of the following is not a reserved word in Ruby?
Which of the following is not a Reserved Words in Ruby? Explanation: pass is not a Reserved Words in Ruby.
Which of the following is not a valid data type in Ruby?
Explanation: Ruby should be written in double quotes inorder to indicate a string. 12. Which of the following is not a valid datatype? Explanation: datetime is valid datatype but timedate is not a valid datatype.
Which of the following is supported by Ruby?
Which of the following is supported by Ruby? Explanation: Ruby supports all the features because it is a object oriented programming language.
What are the features of Ruby programming language?
Features of Ruby
- Expressive feature.
- Visual appearance.
- Dynamic typing and Duck typing.
- Exception handling.
- Garbage collector.
What are features of Java?
Features of Java Programming Language
- Simple and Familiar. Java is simple because: …
- Compiled and Interpreted. Usually, a computer language can be either compiled or interpreted. …
- Platform Independent. …
- Portable. …
- Architectural Neutral. …
- Object-Oriented. …
- Robust. …
What are symbols in Ruby?
In Ruby, symbols are immutable names primarily used as hash keys or for referencing method names.
Which of the following is Ruby iterator?
Iterator is a concept used in object-oriented language. The loop method is the simplest iterator. … They return all the elements from a collection, one after the other.
What is include in Ruby?
include? is a String class method in Ruby which is used to return true if the given string contains the given string or character. Syntax: str. … Returns: true if the given string contains the given string or character otherwise false.
Which of the following is not a valid datatype?
Long is not a valid ‘data type’ in C language. Explanation: Data types can be define or specify how the ‘data’ has to get entered in our programs and what type of data we have to enter.
Which if the following is not one of the data types?
Arr is not a data type. Step-by-step explanation: In computer science, the Boolean data type is a data type that has one of two possible values -usually denoted true and false.
What are data types in Ruby?
Data types in Ruby represent different categories of data such as text, string, numbers, etc. Since Ruby is an object-oriented language, all its supported data types are implemented as classes.
What are identifiers in Ruby?
Identifiers are names of variables, constants, and methods. Ruby identifiers are case sensitive. It means Ram and RAM are two different identifiers in Ruby. Ruby identifier names may consist of alphanumeric characters and the underscore character ( _ ).
What is an iterator Ruby?
“Iterators” is the object-oriented concept in Ruby. In more simple words, iterators are the methods which are supported by collections(Arrays, Hashes etc.). Collections are the objects which store a group of data members. Ruby iterators return all the elements of a collection one after another.
Is Ruby a language?
Ruby is a language of careful balance. Its creator, Yukihiro “Matz” Matsumoto, blended parts of his favorite languages (Perl, Smalltalk, Eiffel, Ada, and Lisp) to form a new language that balanced functional programming with imperative programming.