1、__init__(): 所有类的超类object,有一个默认包含pass的__init__()实现,这个函数会在对象初始化的时候调用,我们可以选择实现,也可以选择不实现,一般建议是实现的,不实现对象属性就不会被初始化,虽然我们仍然可以对其进行赋值,但是它已经成了隐式的了,编程时显示远比隐式的更好 ...
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编程语言 时间:
2021-07-27 17:34:06
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来自https://www.tutorialspoint.com/gnu_debugger/gdb_quick_guide.htm GDB - Debugging Symbols A Debugging Symbol Table maps instructions in the compiled b ...
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数据库 时间:
2021-06-09 10:29:22
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You have n boxes. You are given a binary string boxes of length n, where boxes[i] is '0' if the ith box is empty, and '1' if it contains one ball. In ...
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其他好文 时间:
2021-06-02 10:37:12
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You can't add address ranges to, or delete address ranges from a virtual network's address space once a virtual network is peered with another virtual ...
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Web程序 时间:
2021-05-24 14:08:08
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稀疏数组搜索。有个排好序的字符串数组,其中散布着一些空字符串,编写一种方法,找出给定字符串的位置。 示例1: 输入: words = ["at", "", "", "", "ball", "", "", "car", "", "","dad", "", ""], s = "ta" 输出:-1 说明: ...
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编程语言 时间:
2021-05-24 04:21:47
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题目 Atcoder 思路 代码 #include <iostream> #include <cstring> #include <algorithm> using namespace std; const int N = 4000010, mod = 1e9 + 7; int n, k, fact ...
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其他好文 时间:
2021-05-23 23:13:50
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Mybatis的多对一和一对多 1.Lombok 首先我们来看下Lombok,百度搜以下Lombok,找到官网:https://projectlombok.org/ 官网有这么一句话: Project Lombok is a java library that automatically plugs ...
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其他好文 时间:
2021-05-04 16:16:26
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You have a card deck of n cards, numbered from top to bottom, i. e. the top card has index 1and bottom card — index n. Each card has its color: the 𝑖 ...
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其他好文 时间:
2021-04-15 12:03:00
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字符类型的快速回顾 Example program > e_c11_p1.ada -- Chapter 11 - Program 1 with Ada.Text_IO; use Ada.Text_IO; procedure Chars is My_Char : CHARACTER; Another ...
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其他好文 时间:
2021-04-08 13:35:09
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Description Link. 求 \(\sum_{i=1}^{n}\text{fibonacci}_{i}\times i^{k}=\sum_{i=1}^{n}(F_{i-1}+\text{fibonacci}_{i-2})\times i^{k}\),\(1\le n\le10^{17},1 ...
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其他好文 时间:
2021-04-06 14:07:28
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