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2. Comparison of programming languages (basic instructions)

   en.wikipedia.org/wiki/Comparison_of_programming...

   Generally, var, var, or var is how variable names or other non-literal values to be interpreted by the reader are represented. The rest is literal code. Guillemets (« and ») enclose optional sections.

3. Type conversion - Wikipedia

   en.wikipedia.org/wiki/Type_conversion

   Existing Eiffel software uses the string classes (such as STRING_8) from the Eiffel libraries, but Eiffel software written for .NET must use the .NET string class (System.String) in many cases, for example when calling .NET methods which expect items of the .NET type to be passed as arguments. So, the conversion of these types back and forth ...

4. Comparison of programming languages (string functions)

   en.wikipedia.org/wiki/Comparison_of_programming...

   String functions are used in computer programming languages to manipulate a string or query information about a string (some do both). Most programming languages that have a string datatype will have some string functions although there may be other low-level ways within each language to handle strings directly. In object-oriented languages ...

5. Value type and reference type - Wikipedia

   en.wikipedia.org/wiki/Value_type_and_reference_type

   Many languages have explicit pointers or references. Reference types differ from these in that the entities they refer to are always accessed via references; for example, whereas in C++ it's possible to have either a std:: string and a std:: string *, where the former is a mutable string and the latter is an explicit pointer to a mutable string (unless it's a null pointer), in Java it is only ...

6. Data type - Wikipedia

   en.wikipedia.org/wiki/Data_type

   The standard type hierarchy of Python 3. In computer science and computer programming, a data type (or simply type) is a collection or grouping of data values, usually specified by a set of possible values, a set of allowed operations on these values, and/or a representation of these values as machine types. [1]

7. Comparison of programming languages (algebraic data type)

   en.wikipedia.org/wiki/Comparison_of_programming...

   sealed abstract class Tree extends Product with Serializable object Tree {final case object Empty extends Tree final case class Node (value: Int, left: Tree, right: Tree) extends Tree} And instantiated as:

8. Comparison of programming languages (syntax) - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_programming...

   The enclosed text becomes a string literal, which Python usually ignores (except when it is the first statement in the body of a module, class or function; see docstring). Elixir. The above trick used in Python also works in Elixir, but the compiler will throw a warning if it spots this.

9. String interning - Wikipedia

   en.wikipedia.org/wiki/String_interning

   The single copy of each string is called its intern and is typically looked up by a method of the string class, for example String.intern() [2] in Java. All compile-time constant strings in Java are automatically interned using this method. [3] String interning is supported by some modern object-oriented programming languages, including Java ...