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How do you indent a symbol in Lisp?
The way it works is by setting a property of the symbol you want to provide indentation for. Here are some examples from lisp-mode.el itself: Indentation is defined in multiples of 2, you can change this (this is not recommended) by setting ‘lisp-body-indent’.
How to execute the if clause in Lisp?
Create a new source code file named main.lisp and type the following code in it. When you click the Execute button, or type Ctrl+E, LISP executes it immediately and the result returned is − The if clause can be followed by an optional then clause.
How to construct a construct in Lisp using Ctrl + E?
Create a new source code file named main.lisp and type the following code in it. When you click the Execute button, or type Ctrl+E, LISP executes it immediately and the result returned is −
What happens if the test clause is nil in Lisp?
If the test clause is evaluated to the t, then the action following the test clause is executed. If it is nil, then the next clause is evaluated. Create a new source code file named main.lisp and type the following code in it. When you click the Execute button, or type Ctrl+E, LISP executes it immediately and the result returned is −
How many subexpressions does if special form in Common Lisp take?
The if special form in Common Lisp takes exactly three subexpressions. The subexpressions should be lined up, like this: These forms both take an arbitrary number of subexpressions, the first of which is distinguished as the test.
When to use a semicolon in Common Lisp?
Comments in Common Lisp start with a semicolon and end at the end of a line. Over the years, a style has developed that uses between one and four semicolons, according to the scope of the comments. A single semicolon is used for a comment concerning a single line of code, and located on the same line as the code, for instance:
How to change lisp mode indentation style in Emacs?
If you really do want to change it, it’s Emacs, of course you can. In the extreme, one can always use M-x fundamental-mode to “turn off” all of the mode-specific goodies, but that’s probably overkill here. The only thing in your code that seems to be particularly injured by indentation was the use of (if … (progn)) forms.
Do you use tabs or spaces in Lisp?
Prog-mode is a nice hook to use if you want to make settings for pretty much all code filetypes. After that we disable tabs (use spaces) in Lisp and ELisp files. Lisp is a special type of programming language that really doesn’t work well with tabs, so I HIGHLY recommend spaces. Why is that exactly?
What’s the best way to write braces in Lisp?
Lisp style implies writing all braces in the single line and that makes me crazy. I’m much more comfortable with the K-R notation: def doSomething () {