Numbers | Parses an integer from a string | | Truncates toward negative/positive infinity | | Rounds to the nearest integer | | Modulus/remainder of a truncating division | | Returns a new value (inc/dec)remented by a number | | Macros to (inc/dec)rement in place | | Mathematical value equality (types ignored) | | Order comparison |
Strings | Returns a formatted output string when the destination is nil |
Sequences | Access elements with an integer index | | | Count the appearances of an element | | Finds an item or returns nil | | The first index of an element | | Removes all the occurrences of an item | | Replaces all occurrences of an item |
Lists | Successively applies a function to each element of a list | | Like mapcar, but its function receives a cons cell instead of its element (therefore, the function has access to the rest of the list) | | Like mapcar, but the results are combined into a list | | Like mapcan, but applied to maplist |
| | Things to rememberObject Oriented | All values in a Common Lisp program are instances of some class. Furthermore, all classes are organized into a single hierarchy rooted at the class T. | Starting a project | |
Equality | Object identity (don't use with numbers or chars) | | Considers equivalent two objects of the same class with the same numeric or char value | | Lists with the same structure and contents, strings with the same characters | | Ignores differences in case or in numerical type (1 == 1.0) |
Functions | | Returns an anonymous function | | Immediately returns a value from a function (or a block) | | Invokes a function from a function object | | Works like funcall, but receives the arguments as a list | | Different ways to capture function arguments |
Standard Control Constructs | The else form is optional | | Like if, but returns nil if the condition is falsy and evaluates multiple body forms | | Like when, but executes its body only when the condition is falsy |
IO | Produces formatted output to stdout when the destination is t | format language
| ~a, ~s,
| Interpolate argument in human readable format; interpolate as Lisp readable | ~%, ~&
| Newline; newline if not at the beginning of a line |
Object-Oriented | Defines an abstract operation (polymorphism) | | Defines an implementation of a generic function | | Similar to an invocation to a super-class method | | New named class; some slot options are: :reader, :writer, :accessor, :initarg, :initform, :documentation, :allocation | | Returns the value of slot in the object (setf-able) | | Binds a slot/accessor to a symbol that can be used in its body |
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boechat107.github.io
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