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Questions - stack

Why the use of `,@` does not work as I expected in this common lisp macro? Why is Slime returning this error message?

I am reading the book Lisp written by Winston. In addition, I am using SBCL, Emacs, and Slime. In chapter 8 (about macros), the book has the following exercise: Problem 8-7: A stack is a learnly ord...
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Pedro Delfino

macros

stack

common-lisp

Votes: 0

Answers: 3

Latest Answer

You are at the worng level. When the macro is expanded using its macro function, you are operating on the source code. The source code is this list: (my-push thing foos) i. e. a list with three symb...
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Svante

Create a dictionary whose keys are month names and values are no. of days in the corresponding month. #program stack

please correct the code. Create a dictionary whose keys are month names and values are no. of days in the corresponding month. WAP with separate user defined functions to implement the following opera...
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baadshahh Hacker

python

python-3.x

stack

Votes: 0

Answers: 2

Latest Answer

This is probably what you wanted Edit: Edited the code to meet the new requirements. (I don't understand what do you mean by 'stack' but you can continue from here) def create_month_day_dict(year, lon...
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Eilonlif

Different output while using node and node pointer in structure

I am writing code to create a stack and know whether the stack is empty or not. #include <stdio.h> #include <stdlib.h> struct stack { /* data */ int size; int top; int *ar...
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Ahamad Mamun Nishar Miya

c++

stack

Votes: 0

Answers: 1

Latest Answer

The problem in the 2nd code snippet is that s is uninitialized meaning it is not pointing to any object and you're dereferencing it when you wrote s->size, s->top and s->arr, which leads to u...
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Jason

Time limit exceeded in maximum value of stack(TLE error)

I am given a question on stacks ds : You have been given a sequence A of N digits. Each digit in this sequence ranges from 1 to 10^9. You need to perform 2 types of operations on this list: Add(x): Ad...
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Tuhin Chakrabarty

java

performance

data-structures

stack

max

Votes: 0

Answers: 1

Latest Answer

Collections.max(stack) takes O(n) every time when it is being called, it iterates every element in the stack and finds the max Why don't you store the max in a local variable and compare with it every...
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HariHaravelan

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