Recent questions

0 votes

223 views

1 answer

人工智能训练数据如何存储？存储数据最大的痛点是什么？

计算机视觉，或者语音识别都需要用到大量的标注过的非结构化数据，有什么好办法存储和管理这些数据吗？你是怎么存储原始数据和标签数据的呢？如何做可视化？存储过程中的痛点是什么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

309 views

1 answer

求表中某列往下1-4行的和

如果我想把比如往下1-4行的四个值加起来的话，DolphinDB database中有什么函数可实现？即想要如下图所示这样的效果。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

678 views

1 answer

spring boot data jpa EntityExistsException

我用spring data jpa 写了两个多对多关系的实体Role和Permission，想在关系表里添加一些额外的字段，参考了这篇文章：JAP多对多最佳实践一下时代码： Role 实体类 @Setter @Getter @AllArgsConstructor ... save()的动作，注释掉其中任何一个依然会报异常麻烦大家帮忙看看，谢谢了 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

404 views

1 answer

vscode执行pip指令出现code for hash md5 was not found报错

问题描述刚开始学习Python，为了图个方便就在vscode上安装Python插件直接写文件了，在执行pip install openpyxl的时候出现报错：code for hash md5 was not found报错问题出现的平台版本及自己尝试过哪些 ... 么？实际看到的错误信息又是什么？有没有大神指点下怎么能够正常的使用pip指令，谢谢！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

118 views

1 answer

Import multiple files in different folders and concatenate them, using format in Python

I have a folder with subfolders for each state, as follows: Inside the subfolders there are multiple excel files of the ... {}.csv'.format(states, id_states)) Any ideas? Thanks!...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

323 views

1 answer

请问DolphinDB database中有没有函数可以获取csv文件的行数？

为了获取CSV文件的行数，我写了下列自定义函数，有没有效率更高的写法？ def getLines(fileName){ fin = file(fileName) sz=0; y=array(STRING,1024) do{ ... ,0,1024) sz+=lines } while(lines==1024) fin.close() return sz; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

436 views

1 answer

javascript - A column in MUI Datatable do not hide or show based on a state true or false condition

I'm trying to display or hide a column in an MUI datable based on a condition of a state. I put ane example here which ... is true. I really don't get what I'm doing wrong....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

305 views

1 answer

python - Dice Rolling Game - List to store dice rolling results

I am working on dice rolling game which prints out the number of attempts (n) before both dice shows the same value. ... The past record of dice rolling as below: ") print(record)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

494 views

1 answer

vue路由中的id能直接被修改吗

this.$router.push(`/index/cabinet/detail/${row.contractType}/${row.contractId}`) 当详情页想直接修改contractId应该怎么写呢...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

516 views

1 answer

微信 ios二次分享，页面打开空白，已做授权重定向处理

背景：分享出去的外链，会自动给加上微信标识，导致二次分享失败，如打开页面： `https://xxx/#/deepCoupling/v-main?aaa=5555` 分享出去链接： https://xxx/ ... //xxx/#/deepCoupling/v-main?aaa=5555 解决方案参考 https://ostack.cn/a/11......

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

425 views

1 answer

我有个古老打字机怎么改装成键盘？

这个打字机是Canon Typestar 10，插座还是美式110v，和当年四通打字机很像，感觉可以改造成一个很酷的机械键盘，用树莓派之类的玩意，不过不知道怎么改，大家有啥意见？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

251 views

1 answer

使用jsencrypt加密一直返回false

let encrypt = new jsencrypt(), passwd = password.trim(); encrypt.setPublicKey(rsaKey); passwd = encrypt.encrypt(passwd); // passwd得到的一直都是false...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

410 views

1 answer

Python使用索引访问元组为什么与序列有点区别？

lis = [1,2,3,4,5] tup = (1,2,3,4,5) print (list[0:1]) print (tup[0:1]) 元组的输出结果为(1,)，而list的输出结果为[1] 问题：元组的输出结果为什么多一个","? 是不是因为如果只输出(1)会被视为int型，所以输出的数字只有一个时候会多一个','，而list则没有这种烦恼。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

194 views

1 answer

html - Publishing heatmap created with R and copy/pasting filled color to another word table

To briefly describe the workflow, someone creates blank table that is consistent with company's standards and design style in ... a better, alternative way to do this? Thank you....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

380 views

1 answer

leetcode33. 搜索旋转排序数组, 以下代码为什么会超时

题目描述假设按照升序排序的数组在预先未知的某个点上进行了旋转 ( 例如，数组?[0,1,2,4,5,6,7]?可能变为?[4,5,6,7,0,1,2]?) 搜索一个给定的目标值，如果数组中存在这个目标值，则返回它的索引， ... 用例为：search([4,5,6,7,0,1,2], 3) 时，代码会超时，无法正常运行实在找不出错误，麻烦大家了...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

266 views

1 answer

js中传参的形式是什么？

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

223 views

1 answer

如何阅读《流畅的python》？

本人python接触一年多，做过三个项目，学习过基本的数据结构，列表，栈，队列，二叉树，排序，查找算法。这是我的情况。现在想进阶python,想到读这本书。现在有个疑问是：是从头到尾读它好，还是当做字典用比较好？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

215 views

1 answer

怎么设置listen的ip地址？

` {ok, Listen} = gen_tcp:listen(2345, [binary, {packet, 4}, {reuseaddr, true}, {active, true}]), % {ok, Listen} = ... 16711680) bsr 16, (Ip band 65280) bsr 8, Ip band 255} end....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

529 views

1 answer

Scrapy-redis 传入初始url后，监听中的爬虫未启动，求解

问题描述写了一个分布式爬虫，使用虚拟机进行模拟的时候，redis服务器已经启动，并且设置好了可远程连接，爬虫服务器启动后进入监听状态，然后传入redis-key起始url后，爬虫却为开始 ... \_PERSIST?=?True #?设置连接redis信息 REDIS\_HOST?=?'192.168.0.102' REDIS\_PORT?=?6379...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

420 views

1 answer

table合并代码没搞懂里面的变量问题

<template> <div> <center> <table border="1"> <thead> <tr> <th>序号</th> <th>项目</th> <th>分类</th> <th>分项</th> <th>现场管理</th> < ... 有 this.tableData 里面没有那么多数据，但是打印的时候就莫名其妙的跑出很多属性，这是为什么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

344 views

1 answer

求一个任务中多个步骤的解决方案

假设一个任务，有五个阶段，每个阶段的输入依赖上个阶段的输出。但是因为每个阶段的处理速度不一样，所以出现了有的阶段没有数据处理，有的阶段数据处理不过来的情况。然后整个任务的速度就被最低的那个阶段限制了请问有没有什么框架或者设计模式能解决这个问题吗？在线等！！！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

531 views

1 answer

如何实现markdown编辑和预览页面的同步滚动？

如何实现markdown编辑和预览页面的同步滚动？想要马克飞象的这种效果：马克飞象等比例滚动我是可以实现的，但是这种我就不会了，望大佬们解答。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

476 views

1 answer

if statement - Python f-string surprising results on floats

I am trying to format float numbers in a fixed point notation: x.xxx, three digits following the decimal point regardless of the value of the ... .000* >>> print(f"{0.0:5.3}") 0.0...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

601 views

1 answer

python - OpenCv contrib function 'thinning' not working

While trying to find a fast method to 'skeletonize' edges, I came across the thinning function that is contained in ... I modify the arguments of this function to ensure it works?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

527 views

1 answer

使用mint-ui的组件，infinite-scroll，报错Failed to resolve directive，怎么解决呢

Failed to resolve directive: infinite-scroll...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

550 views

1 answer

script to map drives in powershell

I need to be able to map a couple of drives via a Powershell script during computer logon. The script I have ... mapping line it works fine any help would be appreciated Thanks...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

446 views

1 answer

database - How to delete reference to entity when row is removed?

I have a question about cascade deleting in TypeORM. As you can see in the diagram attached bellow, i have 4 entities: A user who ... () => Post, post => post.photos) post: Post; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

golang 反射拿不到method

如下代码：其中保持两个地方不能改变： func (t *t1) Name() string { 必须是指针 reflect.ValueOf(m) 必须是值怎么才能拿到方法呢？ package ... rv := reflect.ValueOf(m) fn := rv.MethodByName("Name") fmt.Println(fn) }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags