小编And*_*ndy的帖子

我的下一个项目是写一个刽子手游戏.我认为它可以帮助我刷新字符串并提交I/O.

目前,我一直在阅读一个字符串文件到列表中.我试图避免全局变量,所以有人能指出我正确的方向将这个(可能已损坏的)代码变成一个返回列表的函数吗？

(defun read-word-list ()
  "Returns a list of words read in from a file."
  (let ((word-list (make-array 0 
                 :adjustable t
                 :fill-pointer 0)))
       (with-open-file (stream #p"wordlist.txt")
     (loop for line = (read-line stream)
        while line
          (push line word-list)))
       (select-target-word word-list)))))

我正在研究Project Euler,这次问题#4.这个脚本的要点是找到两个三位数字的最大回文产品.我认为解决起来相当简单,但我得到的答案太低了.更具体地说,我得到580085,答案是906609.

有人能告诉我这是不正确的吗？

#!/usr/bin/env python
# encoding: utf-8
"""
P4.py

Created by Andrew Levenson on 2010-06-29.
Copyright (c) 2010 __MyCompanyName__. All rights reserved.
"""

import sys
import os


def main():
    for x in range(100, 1000):
        for y in range(100, 1000):
            z = str( x * y )
            s = str( z[::-1] ) # Reverse z
            if z == s:
                t = z
    print t


if __name__ == '__main__':
    main()

我这次试着简明扼要!我还在使用Project Euler,这次回到#2.我真正的问题是我对Ruby很糟糕.当我运行以下代码时

x = 1
y = 2
sum = 2
while x >= 4_000_000 do |x|

  sum += y if y % 2 == 0

  z = x + y

  x = x ^ y   # xor magic
  y = x ^ y   # xor magic
  x = x ^ y   # xor magic

  y = z 
end

p sum

我的翻译推出了以下输出:

/Users/Andy/Documents/Programming/Ruby/ProjectEuler/P2.rb:4: syntax error, unexpected '|'
while x >= 4_000_000 do |x|
                         ^

我正在阅读为什么(Poignant)指南Ruby,我很确定我的管道语法是正确的.有人能指出我在这里做错了什么吗？我已经尝试过很多不同的方式搞砸了,而且我很快就出现了

给定一个由逗号分隔的字符串,我将如何将其拆分为javascript中的数组？

当我通过调用执行以下Common Lisp程序时(play),我收到错误:Argument X is not a NUMBER: Guess

;;;; number-game.lisp
;;;;
;;;; Andrew Levenson
;;;; 10/25/2010
;;;;
;;;; Simple number guessing game. User has
;;;; five guesses to determine a number between
;;;; one and one hundred, inclusive (1-100).

;;; Set global variable for the target number:
(defparameter *target* nil) 

;;; Set the iterator so we may check the number of guesses
(defparameter *number-of-guesses* 0)

;;; Welcome the user
(defun welcome-user ()
    (format t "Welcome to the …

我真的是Haskell的绝对新手,所以我完全不知道如何调试我写的一些函数.当我打电话给shuntingYard ["3+4"]我回来时[],我想回来[34+].任何和所有的帮助将非常非常感谢.

import Char

isOperator :: Char -> Bool
isOperator x = elem x ['+','-','*','/','%','^','!','=','<','>']

associativityOf :: Char -> String
associativityOf x = if elem x ['+','-','*','/','%']
                    then "Left"
                    else "Right"

precedenceOf :: Char -> Int
precedenceOf x
    | elem x "=<>"   = 1 
    | elem x "+-"    = 2
    | elem x "*/%"   = 3
    | elem x "^!"    = 4
    | otherwise      = 0

operatorActions :: [[Char]] -> [[Char]] -> [[Char]]
operatorActions …

我在Ruby中搞砸了一些.我有一个包含两个方法的类的文件和以下代码:

if __FILE__ == $0

  seq = NumericSequence.new

  puts "\n1. Fibonacci Sequence"
  puts "\n2. Pascal\'s Triangle"
  puts "\nEnter your selection: "
  choice = gets
  puts "\nExcellent choice."

  choice = case
  when 1
    puts "\n\nHow many fibonacci numbers would you like? "
    limit = gets.to_i
    seq.fibo(limit) { |x| puts "Fibonacci number: #{x}\n" }
  when 2
    puts "\n\nHow many rows of Pascal's Triangle would you like?"
    n = gets.to_i
    (0..n).each {|num| seq.pascal_triangle_row(num) \
       {|row| puts "#{row} "}; puts "\n"}
  end

end

为什么我运行代码并提供选项2,它仍然运行第一个案例？

我试图通过用PHP编写的网页将一些简单的用户数据添加到数据库中,但是下面的代码(更具体地说,第三行)打破了页面.我使用错误的MySQL功能吗？我很确定我的查询格式正确.

mysql_query("CREATE TABLE stats ( userAgent CHAR(20) )");

$userAgent = $_SERVER["HTTP_USER_AGENT"];
mysql_query("INSERT INTO stats VALUES ("$userAgent"));

我正在为CS1做一个家庭作业,我几乎完成了它,但是我试图实现的一些功能的错误不断出现.赋值是使用链表的大整数的经典加法和减法.我的问题不在于程序的任何数学功能,而是在完成时使链接列表正确打印.我很确定大多数问题都存在于其中stripLeadingZeros(); 功能如下.

/*
 * Function stripLeadingZeros
 * 
 * @Parameter STRUCT** Integer
 * 
 * Step through a linked list, recursively unlinking 
 * all leading zeros and making the first
 * non-zero integer the head of the list.
 */
struct integer* stripLeadingZeros( struct integer *p )
{
    // Are we at the end of the list?
    if( p == NULL ) return NULL;

    // Are we deleting the current node?
    if( p->digit == 0 )
    {
        struct integer *pNext;

        pNext …

使用 Gensim 创建 FastText 模型后，我想加载它，但遇到了似乎与回调相关的错误。

用于创建模型的代码是

TRAIN_EPOCHS = 30
WINDOW = 5
MIN_COUNT = 50
DIMS = 256

vocab_model = gensim.models.FastText(sentences=model_input,
                                     size=DIMS,
                                     window=WINDOW,
                                     iter=TRAIN_EPOCHS,
                                     workers=6,
                                     min_count=MIN_COUNT,
                                     callbacks=[EpochSaver("./ftchkpts/")])

vocab_model.save('ft_256_min_50_model_30eps')

回调EpochSaver定义为

from gensim.models.callbacks import CallbackAny2Vec

class EpochSaver(CallbackAny2Vec):
    '''Callback to save model after each epoch and show training parameters '''

    def __init__(self, savedir):
        self.savedir = savedir
        self.epoch = 0
        os.makedirs(self.savedir, exist_ok=True)

    def on_epoch_end(self, model):
        savepath = os.path.join(self.savedir, f"ft256_{self.epoch}e")
        model.save(savepath)
        print(f"Epoch saved: {self.epoch + 1}")
        if os.path.isfile(os.path.join(self.savedir, f"ft256_{self.epoch-1}e")):
            os.remove(os.path.join(self.savedir,  f"ft256_{self.epoch-1}e"))
            print("Previous model …