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These conventions usually cover file organization, indentation, comments, declarations, statements, white space, naming conventions, programming practices, programming principles, programming rules of thumb, architectural best practices, etc. These are guidelines for software structural quality.
A common developer practice is to comment out one or more lines of code. The programmer adds comment syntax that converts program code into comments so that what was executable code will no longer be executed at runtime. Sometimes this technique is used to find the cause of a bug.
However, some commenting can decrease the cost of knowledge transfer between developers working on the same module. In the early days of computing, one commenting practice was to leave a brief description of the following: Name of the module; Purpose of the Module; Description of the Module; Original Author; Modifications
The common practice of documenting a code object at the head of its definition is captured by the addition of docstring syntax in the Python language. The docstring for a Python code object (a module, class, or function) is the first statement of that code object, immediately following the definition (the 'def' or 'class' statement).
Technically, Perl does not have a convention for including block comments in source code, but POD is routinely used as a workaround. PHP. PHP supports standard C/C++ style comments, but supports Perl style as well. Python. The use of the triple-quotes to comment-out lines of source, does not actually form a comment. [19]
In contrast with comments, docstrings are themselves Python objects and are part of the interpreted code that Python runs. That means that a running program can retrieve its own docstrings and manipulate that information, but the normal usage is to give other programmers information about how to invoke the object being documented in the docstring.
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Comment programming, also known as comment-driven development (CDD), is a (mostly) satirical software development technique that is heavily based on commenting out code. [ 1 ] In comment programming, the comment tags are not used to describe what a certain piece of code is doing, but rather to stop some parts of the code from being executed.