wt

Using Wt with Qt

心不动则不痛 提交于 2019-12-07 01:38:37
问题 I'm working on a project to develop a web application for controlling some machinery and visualising sensor data. It is deployed on a single board computer running a custom linux distro. We have a large existing code base from a previous version of the project that is based on a standalone Qt app. With the new software we are moving towards a web based interface using Wt. At the moment we are trying to re-use the Qt code which interfaces with some system services, while hosting and

oracle定时执行存储过程

。_饼干妹妹 提交于 2019-12-05 05:17:44
需求 每小时进行一次查询统计数据,并将数据插入到自定义的表当中 效果 创建存储过程 create or replace procedure summary_data as v_dcppv number; v_jd12h number; v_dby number; v_xby number; v_bj number; v_bn number; v_zdzf number; v_wxzf number; v_jfzf number; v_yhdj number; v_dgzs number; v_tds number; v_tds2 number; begin --单次 select count(1) into v_dcppv from iptvsp_wt_req a where servicecode = 'JK0008' and a.instime between trunc(sysdate, 'hh') - 1 / 24 and trunc(sysdate, 'hh') - 1 / 86400 and orderstatus = 1 and order_type in (0, 1) and order_time IN (48, 30) and a.user_id like '116%'; --酒店 select count(1) into v_jd12h from iptvsp

Experiences using Wt C++ framework? [closed]

∥☆過路亽.° 提交于 2019-12-04 07:34:01
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . Has anyone seriously used Wt? Did it work well? Did you experience certain limitations? Or advantages? Wt is a C++ library for developing web applications. Please avoid the discussion of whether C++ is a good language for web development. I just want to give Wt a try because it

Web Application Frameworks: C++ vs Python

守給你的承諾、 提交于 2019-12-04 03:29:27
I am familiar with both Python and C++ as a programmer. I was thinking of writing my own simple web application and I wanted to know which language would be more appropriate for server-side web development. Some things I'm looking for: It has to be intuitive. I recognize that Wt exists and it follows the model of Qt. The one thing I hate about Qt is that they encourage strange syntax through obfuscated means (e.g. the "public slots:" idiom). If I'm going to write C++, I need it to be standard, recognizable, clean code. No fancy shmancy silliness that Qt provides. The less non-C++ or Python

on namespace ceilometer.$cmd failed: Authentication failed. 问题处理方案

假装没事ソ 提交于 2019-12-03 12:17:44
on namespace ceilometer.$cmd failed: Authentication failed. UserNotFound: Could not find user ceilometer@ceilometer 背景介绍 1、 Ceilometer 项目是 OpenStack 中用来做计量计费功能的一个组件,后来又逐步发展增加了部分监控采集、告警的功能。 2、 MongoDB 是一个基于分布式文件存储的数据库。由 C++ 语言编写。旨在为 WEB 应用提供可扩展的高性能数据存储解决方案。 3、前几年的一个项目就使用到了 Ceilometer 和 MongoDB ( 3.2.9 版本) 结合,用于存储性能和告警数据。 问题说明 最近,在某个现场环境上,MongoDB 挂载的存储设备出现了故障。但是,存储设备故障恢复后,MongoDB服务无法正常启动。 启动日志报错如下: 2019-10-31T16:33:27.651+0800 I CONTROL [main] ***** SERVER RESTARTED ***** 2019-10-31T16:33:27.658+0800 I CONTROL [initandlisten] MongoDB starting : pid=5097 port=27017 dbpath=/var/lib/mongodb 64-bit

Adding a text only panel to base graphics layout

匿名 (未验证) 提交于 2019-12-03 10:24:21
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: 3 plots arranged in 2 rows and 2 columns attach(mtcars) par(mfrow=c(2,2)) plot(wt,mpg, main="Scatterplot of wt vs. mpg") plot(wt,disp, main="Scatterplot of wt vs disp") boxplot(wt, main="Boxplot of wt") But how do I create a panel with just text and then add it to the fourth position in the grid. Apologies. I see now that like many quesioners I was asking you to read my mind or intuit from my code that I expected the text to be arranged left-justified in a grid of locations in the blank space. (For some reason this seemed perfectly

论文阅读 decaNLP -- The Natural Language Decathlon: Multitask Leaning as Question Answering

蓝咒 提交于 2019-12-03 05:45:06
作为一个刚刚入门NLP的学生,希望在阅读每一篇论文后都进行一定的记录,提炼文中观点,写出自己的理解,如有任何解读错误之处敬请指出,O(∩_∩)O谢谢! 先放出paper的网址  https://arxiv.org/pdf/1806.08730.pdf key words Multitask Learning Zero-shot Learning Transfer Learning Meta-Learning 前言 当今QA问题在NLP领域可以说是炽手可热,SQUAD数据集的出现,大量RNN,Attention的模型出现将SQUAD1.0的简单问题准确度提高至超越人类。我的同学也有在做SQUAD的,基本上是在别人模型的输入和encoder端上面做些小trick,提升那么1、2个百分点的EM/F1,在我看来这些工作真的是毫无意义。 本篇文章的作者的一句话直中要害: The quirk of the dataset does not hold for question answering in general, so recent models for SQUAD are not necessarily general QA models. 数据集的“怪癖”并不对普遍的QA问题适用,所以当前的QA Model都不是通用模型。 然而跳出SQUAD的局限

dplyr - Group by and select TOP x %

匿名 (未验证) 提交于 2019-12-03 01:23:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Using the package dplyr and the function sample_frac it is possible to sample a percentage from every group. What I need is to first sort the elements in every group and then select top x% from every group? There is a function top_n , but here I can only determine the number of rows, and I need a relative value. For example the following data is grouped by gear and sorted by wt within each group: library(dplyr) mtcars %>% select(gear, wt) %>% group_by(gear) %>% arrange(gear, wt) gear wt 1 3 2.465 2 3 3.215 3 3 3.435 4 3 3.440 5 3 3.460 6 3 3

手撕OpenCV源码之resize(INTER_AREA)

匿名 (未验证) 提交于 2019-12-03 00:22:01
resize在modules/imgproc/src/文件件中,首先看resize API的函数实现: void resize(InputArray src, OutputArray dst, Size dsize, double fx= 0 , double fy= 0 , int interpolation=INTER_LINEAR ) 参数说明: src:输入图像 dst:输出图像,dst的数据类型与src相同. dsize:这个参数是输出图像的尺寸,两种情况,如果该参数设置为0,api会自动计算 输出参数,否则按照输入尺寸.dst的计算公式: d s i z e = S i z e ( r o u n d ( f x × s r c . c o l s ) , r o u n d ( f y × s r c . r o w s ) ) d s i z e = S i z e ( r o u n d ( f x × s r c . c o l s ) , r o u n d ( f y × s r c . r o w s ) ) 所以当dsize为0的时候,fx和fy不能为0. fx: ( d o u b l e ) d s i z e . w i d t h / s r c . c o l s ( d o u b l e ) d s i z e . w i d t h /

选取数据框中的元素

匿名 (未验证) 提交于 2019-12-03 00:03:02
# 选取数据框中的元素 --------------------------------------------------------------- patientdata [ c ( 'diabetes' , 'status' )] patientdata [ 1 : 2 ] patientdata [, 1 : 2 ] patientdata$age table ( patientdata$diabetes , patientdata$status ) summary ( mtcars$mpg ) plot ( mtcars$mpg , mtcars$wt ) attach ( mtcars ) summary ( mpg ) plot ( mpg , wt ) detach ( mtcars ) mpg = c ( 25 , 36 , 47 ) attach ( mtcars ) plot ( mpg , wt ) with ( mtcars ,{ print ( summary ( mpg )) plot ( mpg , disp ) # plot(mpg,wt) }) with ( mtcars ,{ local_var <- summary ( mpg ) global_var <<- summary ( mpg ) }) local_var global_var