function comment best practice

von: am: 30. Dezember 2020 02:36

This would be the best time to leave open and honest comments about your code. Use the built in comment-based help system. The compiler ignores everything from // to the end of the line. Comments are specially marked lines of text in the program that are not evaluated. Don’t build in everything but the kitchen sink. ... Use the built in comment-based help system. Comment & Description; 1 /* text */ The compiler ignores everything from /* to */. This is a general programming best practice — making sure that you create functions that fulfill one job at a time makes it easy for other developers to debug and change your code without having to scan through all the code to work out what code block performs what function. ... for example it can't check if you have used misleading english to describe the purpose of a function! Inline comments should be separated by at least two spaces from the statement. Comment-based help for a function can appear in one of three locations: At the beginning of the function body. Suggested Best Practices Write your function with one purpose. Single-line comments are referred to as inline comments when they appear at the end of a line of code. Commenting is best done before actually writing the code for your program. Before the function keyword. For example: An inline comment is a comment on the same line as a statement. Syntax for comment-based help in functions. Note that comments are just as much a part of the code as the program itself. 2 //text. Inline comments Comments on the same line as a statement can be distracting, but when they don't state the obvious, and particularly when you have several short lines of code which need explaining, they can be useful. The JDK javadoc tool uses doc comments when preparing automatically generated documentation. If a function is called with a missing argument, the value of the missing argument is set to undefined. Here is another example where I call a function from a third party library: In these particular examples, the type of commenting (or documentation) used is … The comparison operators >, <, <= and >= look similar to the fat arrow => (which defines the arrow function). Undefined values can break your code. At the end of the function body. It is a good coding practice to put all declarations at the top of each script or function. Additionally this will give you practice to getting used to commenting all of your files. 3 /** documentation */ This is a documentation comment and in general its called doc comment. Avoid using the line comment //. The amount of time required to go back and figure out how something works is much larger after you’ve already built the function. Best practices in comment writing and documentation . At a minimum, provide a helpful synopsis, description, parameter (for all), and example Outdated comments can be more of a detriment than no comment at all, so remember to maintain and update comments regularly along with everything else. DESCRIPTION Particularly when the comment must be frequently edited, as with the help and documentation for a function or script. Write your function with one purpose. The comments I added at the function definition can be previewed whenever I use that function, even from other files. Inline comments are unnecessary and in fact distracting if they state the … Inline Comments. They should start with a # and a single space. /* */ is much safer to use because it doesn’t cause errors when the line break is removed. There are usually two syntactic ways to comment. Ask Question Asked 8 years, 11 months ago. There cannot be more than one blank line between the last line of the function help and the function keyword. If you debug using comments, there is a nice little trick: Comment what you consider needed - but don’t tell others your life story. The first is called a single line comment and, as implied, only applies to a single line in the "source code" (the program). When the function has one expression, a good practice is to inline the arrow function. Fat arrow and comparison operators. When these comparison operators are used in an inline arrow function, it creates some confusion. It is a good habit to assign default values to arguments. 3.

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