Common Lisp Compilation Program Tips

These days began to play common Lisp, encountered an interesting problem, CL is generally interpreted to run, there are implementations can compile generated bytecode (FAS file). The two CL implementations I'm using are SBCL and clisp, which I see in the book "Practical Common Lisp programming," one of the features of Clisp relative to SBCL is that Clisp compiles lisp into bytecode files (which is very similar to Java and feels kind), But also can not directly compile the machine code, which let me this obsession with the assembly and C language feeling very uncomfortable, think of the previous in the "Python core programming" see "Sh-bang", brainwave, incredibly still good to pass! Let's take a look at the following example:

(1) Lisp file: Test.lisp

1 (Format T "Hello,common Lisp world!~%")2(Defun sqr (n)3      (* n N))  4 (Format T "The square of ~a is ~a ~%" 5 (SQR 5))

(2) Compiling and other:

1 $clisp-c test.lisp23# ... Omit output ... 4 5 $vim Test.fas

(3) After opening Test.fas with the editor, add #!/usr/bin/clisp to the first line:

#!/usr/bin/clisp (| system|::|version| ' (20080430.)) #0Y_ #0Y |   charset|::|utf-8| #Y (#:|1 1 (FORMAT T "Hello,common Lisp world!~%") -1|       #18Y (The #Y (#:|1 1 (FORMAT T "Hello,common Lisp world!~%") -1-1|, the DA 6B (in) #19Y (the "Hello,common Lisp world!\n") ("the" * *, the DA-AF (9E) common-lisp|::|t| | common-lisp|::|t| |    common-lisp|::|t|)) |   common-lisp|::|*standard-output*|) (| common-lisp|::|t| | common-lisp|::|t| | common-lisp|::|t|)) #Y (#:|2 3 (defun SQR (N) ...)   -2| #20Y (xx) 2F, da DC 9C C5 19 01) (| common-lisp-user|::|sqr| |    system|::|remove-old-definitions| #Y (|       common-lisp-user|::|sqr| #17Y (from xx to XX, AD AE 33 02 39 19 02) () (| common-lisp|::|t| | common-lisp|::|nil| |       common-lisp|::|nil|) (| common-lisp-user|::|n|) | common-lisp|::|nil| 1)) (| common-lisp|::|t| | common-lisp|::|t| | common-lisp|::|t|)) #Y (#:|4 4 (FORMAT T "the SquAm of ~a is ~a ~% "...)   -3|  #22Y (The #Y (#:|4 4 (FORMAT T "The square of ~a is ~a ~%"), DA 6B, DC DC 6F. ...)       -3-1| #39Y (as at xx/xx), B1, B1, B1, B1, B1 38 02 31 9, and more. 5 9E) ("The Square of" "is" "\ n") (| common-lisp|::|t| | common-lisp|::|t| |    common-lisp|::|t|)) | common-lisp|::|*standard-output*| 5. |   common-lisp-user|::|sqr|) (| common-lisp|::|t| | common-lisp|::|t| | common-lisp|::|t|))

(4) The following execution chmod u+x Test.fas

(5) Execute./test.fas, output as follows:

1 chmod u+2 $./3 hello,common Lisp world! 4 5  -

　　If you want to run the example above, make sure you have Clisp installed.

Well, what I'm talking about is not a lisp trick, it's just a feature that most shells support: In the first row, if there's something like #!/xxx/xxx, XXX is automatically called to interpret the following for this example,/usr/bin/ Clisp to explain the Test.lisp bytecode file, the equivalent of running Clisp Test.fas (but somehow, feel comfortable with this call), finally have to spit down the slot AH: "Insert Code" Support F #, Erlang but no Lisp language, Is Lisp too small?

Common Lisp Compilation Program Tips