All Questions
28 questions
6
votes
1
answer
123
views
WOMOIWIW: What Org-mode Opens is What I Want
Motivation
Previously, on the Emacs stack exchange:
In Org mode, when I open a link (C-c C-o) [...] [that] contains a wildcard, such as file:3_o*.pdf, Emacs opens ...
- 19.6k
2
votes
0
answers
54
views
Lispy code? Palindrome of product
My answer to Project Euler problem 4 (largest palindrome of product of two 3-digit numbers) is below.
Please suggest improvements, style changes, indentation, commenting, naming, ...
And nitpicks are ...
- 530
4
votes
2
answers
117
views
Check for pangrams in elisp
I'm trying to find pangrams ie sentences that contain all the letters of the alphabet, for instance "The quick brown fox jumps over the lazy dog".
I'm an absolute beginner in elisp, and it ended up ...
- 447
9
votes
1
answer
136
views
Edis: Emacs driven indentation script
Motivation
I recently picked up Emacs. As part of the process, I've started to configure the editor to fit my needs with Emacs Lisp. The Elisp indentation rules are still foreign to me, so I pretty ...
- 19.6k
4
votes
1
answer
180
views
Implementing a tree parsing function
I've solved an assignment a week ago, which is my first assignment using Lisp.
Tasks:
Task 1:
a. Given a tree as recursive lists, print the tree in breadth first order.
b. Given a tree like in ...
3
votes
2
answers
560
views
A simple Tic Tac Toe game
I am trying to learn some Common Lisp, except basically all of my computing background is the C family of languages. So, I'm starting small. I have made a Tic-Tac-Toe game, and I am looking for some ...
- 210
1
vote
2
answers
2k
views
Pascal's triangle in mit-scheme
As suggested by the name of source file (ex1.12.scm), I just started learning mit-scheme by reading SICP. In Exercise 1.12, I'm asked to "compute elements of Pascal'...
- 503
1
vote
2
answers
11k
views
Highest number in a list with Racket
I am trying to build a function to find the highest number in a list without using the built-in functions of "apply" and "max".
I created the following code:
...
user122340
2
votes
1
answer
106
views
Find common factor of numbers in a list
This program calculates common factor for given numbers. The original use case is to find a possible resolution for pixel games that scale well with new screen resolutions (that's why I don't have any ...
- 121
5
votes
2
answers
577
views
Tail recursive FizzBuzz in Common Lisp
I solved FizzBuzz using tail recursion. Is it efficient enough?
...
- 53
2
votes
1
answer
220
views
SICP exercise 2.28 - counting leaves in a tree (recursive process)
From SICP
Exercise 2.28: Write a procedure fringe that takes as argument a tree
(represented as a list) and returns a list whose elements are all the
leaves of the tree arranged in left-to-right ...
- 2,746
2
votes
2
answers
630
views
SICP - exercise 2.27 - reversing elements of a list and sublists
From SICP
Exercise 2.27: Modify your deep-reverse procedure of Exercise 2.18 to produce a deep-deep-reverse procedure that takes a list as argument and returns as its value the list with its ...
- 2,746
2
votes
1
answer
115
views
SICP - exercise 2.5 - representing pairs of nonnegative integers using only numbers and arithmetic operations
From SICP
Exercise 2.5: Show that we can represent pairs of nonnegative integers using only numbers and arithmetic operations if we represent the pair a and b as the integer that is the product 2^x*3^...
- 2,746
2
votes
1
answer
70
views
Replacing elements from a list and its sublists - part II
This is sort of a follow-up to
Replacing elements from a list and its sublists
but now there are arbitrary numbers of words that would be replaced stored in a list.
Now write substitute2 that takes a ...
- 2,746
1
vote
2
answers
422
views
SICP - exercise 2.20 - same-parity
Exercise 2.20.
The procedures +, *, and list take arbitrary numbers of arguments. One way to define such procedures is to use define with dotted-tail notation. In a procedure
definition, a parameter ...
- 2,746