Recent questions tagged Lisp

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lisp - Why are fixnums in Emacs only 29 bits?

And why don't they change it? Edit: The reason ask is because I'm new to emacs and I would like to use ... as they would on the native machine. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - How does `if` not evaluate all its arguments?

I'm trying to learn and understand the Lisp programming language to a deep level. The function + evaluates ... its arguments aren't evaluated? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - How is set! defined in scheme?

How would you implement your own set! function in Scheme? A set! function is a destructive procedure that ... into account the previous value. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Mysterious Racket error: define: unbound identifier; also, no #%app syntax transformer is bound in: define

This program produces an error: define: unbound identifier; also, no #%app syntax transformer is bound in: define ... clause *clause* *state*) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - running scheme from emacs

I'm a newbie to LISP. I am attempting to invoke the scheme interpreter from within emacs (version 23 running on ... *scheme* buffer?) Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - let vs def in clojure

I want to make a local instance of a Java Scanner class in a clojure program. Why does this not work: ; ... the difference between let and def? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Emacs :TODO indicator at left side

I want to have sort of indiacator at left side of the line wherever I have in the source code #TODO: ... line numbers displayed at emacs. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - operator #+ and #- in .sbclrc

Anybody know what #+ and #- operators means in .sbclrc? I couldn't find it in the manual. I see #- ... implementation or part of Common lisp? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Performance difference between functions and pattern matching in Mathematica

So Mathematica is different from other dialects of lisp because it blurs the lines between functions and macros ... of macros/patterns. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - scheme continuations for dummies

For the life of me, I can't understand continuations. I think the problem stems from the fact that I don't ... it and recall later, as needed. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - How to force Emacs not to display buffer in a specific window?

My windows configuration looks like this: +----------+-----------+ | | | | | | | | | | | | | | | ... (cdr windows)) buf) (car (cdr windows)))))) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Dr Racket problems with SICP

I'm working through SICP. Currently, in the first chapter, I'm having problems getting Racket to let me ... the compatibility issues with SICP. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Why does Clojure have "keywords" in addition to "symbols"?

I have a passing knowledge of other Lisps (particularly Scheme) from way back. Recently I've been reading about ... notation (ie: colons)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - How to modify this "make-matrix" function?

Well, the flawed function is as follows: (defun make-matrix (n) (make-array (n n) :initial-element 0)) ... I write this make-matrix function? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

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lisp - Writing a destructive macro or function like incf?

I need an incf function which does some bounds checking during the increment: val := val + delta if val >= 1.0 ... e., where x will be modified? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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442 views

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lisp filter out results from list not matching predicate

I am trying to learn lisp, using emacs dialect and I have a question. let us say list has some members, for which ... , how do I do it? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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571 views

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lisp - Setting SLIME in emacs

I was trying to install SLIME. I downloaded the zipped package and according to the README file, I have to put this ... "? How do I find it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - Collection of Great Applications and Programs using Macros

I am very very interested in Macros and just beginning to understand its true power. Please help me ... from Ryan Culpepper's Dissertation See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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356 views

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lisp - Why multiple namespaces?

What is the rationale behind the design decision to have separate namespaces for values and functions in Common Lisp? ... for and against it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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lisp - What's difference between defvar, defparameter, setf and setq

I found a Similar question. But I don't quite understand that explanation. So I'm trying to run clisp with ... out what's different with them? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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457 views

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lisp - What is the best Scheme implementation for working through SICP?

I have been using PLT Scheme, but it has some issues. Does anyone know of a better implementation for working through SICP? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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408 views

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lisp - Fast Prime Number Generation in Clojure

I've been working on solving Project Euler problems in Clojure to get better, and I've already run into ... calculate prime numbers in Clojure? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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334 views

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lisp - References Needed for Implementing an Interpreter in C/C++

I find myself attached to a project to integerate an interpreter into an existing application. The language to be ... as well. Thanks, all! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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706 views

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lisp - How is Racket different from Scheme?

Racket is a descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or ... referring to the main Racket dialect. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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534 views

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lisp - When should Emacs #'function syntax be used?

Basically, when should I use Emacs Lisp's function procedure? I haven't found any examples in which there's a ... of Emacs more recent than X? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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401 views

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lisp - How Are Lazy Sequences Implemented in Clojure?

I like Clojure. One thing that bothers me about the language is that I don't know how lazy sequences are ... are lazy sequences most efficient? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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