逻辑逻辑术语在 python 中我们会用到下面的术语(字符或者词汇)来定义事物的真(True)或者假(False)。计算机的逻辑就是在程序的某个位置检查这些字符或者变量组合在一起表达的结果是真是假。and 与 or 或 not 非 != (not equal) 不等于 == (equal) 等于 = (greater-than-equal) 大于等于 <= (less-than-equal)
项目需要,查看某条记录是否存在,不存在的话创建一条新记录,存在的话更新某些字段。使用到mysql的 DUPLICATE key语法:INSERT INTO ... ON DUPLICATE KEY UPDATE ...;该语法在insert的时候,如果insert的数据会引起唯一索引(包括主键索引)的冲突,即
## 解决Java HotSpot(TM) 64-Bit Server VM警告的步骤 为了解决"idea Java HotSpot(TM) 64-Bit Server VM warning: MaxNewSize (524288k) is equal to or greater than the entire heap"这个警告,我们可以按照以下步骤进行操作: | 步骤 | 操作 | | -
原创 2023-07-06 06:36:37
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Five equa
转载 2020-12-30 11:27:00
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White RectanglesTime Limit: 2000/100 of N squares by N squares with equa
原创 2023-05-29 22:19:10
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则,还是会帮助我们更好的设计代码。 equa用,而equal
转载 2017-10-26 22:40:00
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在文章《An improved contrast enhancement algorithm for infrared images based on adaptive double plateaus histogram equa
原创 2024-03-25 12:42:40
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You are given an array of variable pairs equations and an array of real numbers values, where equations[i] = [Ai, Bi] and values[i] represent the equa ...
转载 2021-08-18 23:14:00
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#Symmetric multiprocessing (SMP) Symmetric multiprocessing (SMP) designs are currently being challenged by the demand for additional Intel processors within a single system. In SMP, CPUs have equa
转载 2010-06-21 18:22:37
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//条件构造器 @Test public void testSelect() { QueryWrapper<User> queryWrapper = new QueryWrapper<>(); /** * gt: greater than 大于 * lt: less than 小于 * e:equa ...
转载 2021-09-29 23:45:00
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package com.heatdeath.object;import lombok.extern.slf4j.Slf4j;import java.utilc class Equa...
原创 2023-06-06 16:55:02
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Here are some notes for the GGX paper "Microfacet Models for Refraction through Rough Surfaces". In this article, I will give derivations for some important equation in this paper. Derivation for equa...
转载 2018-03-24 00:12:00
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1013.Partition Array Into Three Parts With Equal SumEasy8115FavoriteShareGiven an arrayAof integers, returntrueif and only if we can partition the array into threenon-emptyparts with equa...
原创 2022-10-26 19:32:06
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1 python数据分析numpy基础之unique对数组元素去重python的numpy库的unique()函数,用于查找数组的唯一元素,即对数组元素去重,重复的元素只保留一个,并返回排序后的数组。用法numpy.unique(ar, return_index=False, return_inverse=False, return_counts=False, axis=None, *, equa
一、内容 There are n monsters standing in a row numbered from 1 to n. The i-th monster has hi health points (hp). You have your attack power equa
原创 2022-01-06 16:01:04
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drools中Fact的equality模式一、equality modes介绍1、identity模式2、equality模式二、需求三、如何设置fact对象的equality行为equa
原创 2022-06-14 17:20:05
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Same Tree[LeetCode]https://leetcode.com/problems/same-tree/Total Accepted: 126017 Total Submissions: 291619 Difficulty: EasyQuestion Given two binary trees, write a function to check if they are equa
原创 2021-07-14 10:14:23
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题目链接:https://leetcode.com/problems/minimum-moves-to-equal-array-elements/题目:Given a non-empty integer array of size n, fike all array elements equa
原创 2023-07-27 00:00:03
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Same Tree[LeetCode]https://leetcode.com/problems/same-tree/Total Accepted: 126017 Total Submissions: 291619 Difficulty: EasyQuestion Given two binary trees, write a function to check if they are equa
原创 2022-02-10 14:42:47
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 创建 Excel 表格public void outExcel(Integer fileId, HttpServletResponse response){ //根据文件id查询档案对象 XzFile file = xzFileMapper.getFileById(fileId); if (file==null || file.equa
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