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For function that manipulate strings, modern object-oriented languages, like C# and Java have immutable strings and return a copy (in newly allocated dynamic memory), while others, like C manipulate the original string unless the programmer copies data to a new string.
Python. The use of the triple-quotes to comment-out lines of source, does not actually form a comment. [19] 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
Python supports a wide variety of string operations. Strings in Python are immutable, so a string operation such as a substitution of characters, that in other programming languages might alter the string in place, returns a new string in Python. Performance considerations sometimes push for using special techniques in programs that modify ...
void main(«string[] args») { instructions} C#: Same as above; alternatively, if only one statement: void foo(«parameters») => statement; Same as above; alternatively, if simple enough to be an expression: void foo(«parameters») => expression; static void Main(«string[] args») method_body May instead return int.
For instance, in later development, a return statement could be overlooked by a developer, and an action which should be performed at the end of a subroutine (e.g. a trace statement) might not be performed in all cases. Languages without a return statement, such as standard Pascal don't have this problem.
In Raku, a sister language to Perl, for must be used to traverse elements of a list (foreach is not allowed). The expression which denotes the collection to loop over is evaluated in list-context, but not flattened by default, and each item of the resulting list is, in turn, aliased to the loop variable(s). List literal example:
C# has and allows pointers to selected types (some primitives, enums, strings, pointers, and even arrays and structs if they contain only types that can be pointed [14]) in unsafe context: methods and codeblock marked unsafe. These are syntactically the same as pointers in C and C++.
Files.readAllLines method returns a List of String, with the content of the text file, Files has also the method readAllBytes, returns an array of Strings. Files.write method writes byte array or into an output file, indicated by a Path object. Files.write method also takes care of buffering and closing the output stream. Notes on the C# ...