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所有的模糊语法都能转换成不明确的文法吗?

There are grammars we convert to unambiguous by using left recursion. Are there grammars that cannot be converted to unambiguous grammars?

KAAS自定义损失:A* MAE(1-A)*常数

I am trying to implement a fairly simple custom loss function in Keras, but the lack of documentation makes it quite hard. Basically, I am trying to make the network predict bad input (i.e. on which

JPA自动生成类型中的亲子序列遵循同一顺序,如何使其不同

[enter image description here][1] [1]: https://i.stack.imgur.com/vKq6V.pngstrong text

Linux中的输出格式

I'm trying to get the list of files generated on current date in the ls -l format using find command , like below: find . -type f -name "sample[0-9]*?_bill[0-9]*?.pdf" -mtime 0 -exec ls -l {} \; The

Ajax无法扩展ASP.NET自定义文本框

I am trying to make my custom TextBox (which inherits WebControlls.TextBox) extendable by AJAX Toolkit Error : Extender control '' cannot extend 'txtUserId'. Extender controls of type '

有什么方法可以使SPIY嵌入

import spacy from spacy import displacy doc1 = nlp(u'the dog barked at the stranger') displacy.serve(doc1, style='dep') I want this dependency tree to be embedded in notebook itself

用字符串计算除法

I am working with the following question Using system; namespace StringToNumerics { class Trial { static void Main(string[] args) { string division = "10/5";

JavaFX获取IVIEVIEW FITWAWED为0,而不是实际尺寸

I have a javafx application: @Override public void start(Stage primaryStage) { PRIMARY_STAGE = primaryStage; PRIMARY_STAGE.setTitle("My amazing app"); PRIMARY_STAGE.setMaximized(true);

产品进口不在后端工作

I am facing one problem when i clicked on import button(backend) in woocommerce product menu it gives me error and that is this page isn't working i am also try from tools->import->WooCommerce

从Python提取年份/月到新列

I have a column with dates in object type > df['created_at_first'] Thats the result created_at_first 2018-07-01 02:08:06 2018-06-05 01:39:30 2018-05-16 21:18:48 I would like to create new

SAPUII5塞尔场建议自动完成

I am developing an SAPUI5 application. What I want to achieve is to have a suggestion list autocomplete in my search field. For example when I type "app", I will list suggestion of "apple, application"

在本地主机上开放十月CMS

I am unable to open October CMS in my localhost. I've IIS installed in my PC. When I type localhost in browser, IIS is opened. For October CMS, I've installed XAMPP. apache port -> 1234,1443 mySQL

无法使用脸谱网图形API创建广告创意

I am trying to create dev environment for fetching ads insights in development mode. We are able to create Sandbox Ad Account test user We are also able to get Access token with required

如何在Ubuntu上运行依赖于NuGet包的.Net核心应用程序

I have a very simple .net Core (2.1) console application that uses a couple of NuGet packages for development. When I compile (not self-contained) it's output is as follows: HelloWorld.deps.json

反应条件设置导航

I'm populating a table by mapping each row, and inside mapping each column . I want to enable a NavLink instance only if its the first column of each row . I also want to use the row ID and concat it

子句动态?后遗症

I have a specific problem, I explain: I have a table "schedule" in my database, the table has 7 fields; monday, tuesday, wednesday, thursday When I get the schedule of a coach I do: Coach.find({

获取TFrAtHub所有者设置TababScript字幕

I have a TFrame with a TEdit component. The frames are created dynamically at runtime as a TTabsheet for a TPageControl. I need to set the TTabSheet.Caption to the TEdit.Text on the TEdits KeyPress

保持用户复用和AWS放大

I'm trying to persist user connection in my React-native app. I'm using : "aws-amplify": "1.0.2", "aws-amplify-react-native": "1.0.2", "aws-appsync": "^1.3.1", "aws-appsync-react": "^1.1.1", "react"

按列的最大值分组并返回完整行

I have a dataframe with 5 different columns. My actual problem is groupby a specific field with a max() and return the row that fulfils this condition. Example (I put the code and a print-screen of

(.NET)数据库连接和转介网站

What is the connection line to the database (sql) from visual studio? And what if there is no sql server on my machine already! What are good books or sites to be referred for industry ready .net

如何使用VB.NET从字符串创建图像文件?

We are using a VB.NET script (.NET Framework 3.5), we need to create a image file with text in the image. We should be able to pass a text string which need to be displayed in the image from our VB.

如果无法加载,我如何本地加载资源而不是CDN?

I'm having a problem with Bootstrap + jquery loading from CDN sometimes it doesn't load/get imported from CDN for example : <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/

当通过SockTube创建的套接字接收消息时,数据丢失是可能的吗?

Here below is my code sample, I forked a new process and use it to receive the message via UDS sent by main process, but I added a time.sleep(5) in the child's logic: import os import socket import

生成指数增长的数字列表(从开始到停止)

I would like to generate a exponentially increasing list of numbers between a start and an end number. So for example I would to take: start_num = 700,000 end num = 750,000 num_steps = 100 and

什么是免费的替代惠普KeVIEW for Windows?

Please suggest any alternative Open source tool or software for Windows which i am using into my project . Open source means i need SDK for that tool. My Goal - To View More file format like text, .

WebLogic 12C中的JNDI查找

I have a legacy code with JNDI template which is: <bean id="jndiTemplate" class="org.springframework.jndi.JndiTemplate"> <property name="environment"> <props>

有没有办法在聚焦离子输入时隐藏键盘?

I wanted to have an ion-input that will be focused and the keyboard should not appear. Is there any way or is it possible? Thank you!

如何停止Windows混合现实改变麦克风灵敏度?

I have an issue where when running my app in Windows Mixed Reality the microphone's sensitivity levels would change, usually going to a lower sensitivity. My app uses the microphone and it needs the

用参数求值返回函数

I am fairly new to C++ and I would like to do the following but can't figure out how. I want to define a function based on a template with some parameters. Lets say we have f(x)=a*x+b, but the

ESXI 4,检索属性SOAP调用

Am trying to get Datastore summary using RetrieveProperties method. I'm POSTing the following: <Envelope xmlns="http://schemas.xmlsoap.org/soap/envelope/"> <Body xmlns="http://schemas.

Visual Studio日期范围选择器不

I am new to Jquery and I want to display a dateRangePicker in my ASP.net web application [Visual Studio 2017]. I have found the below component perfect for my requirement: https://github.com/

UISCRelVIEW不使用UICLink视图滚动

I'm really stuck trying to figure it out why UIScrollView won't scroll. I will post screenshot of my application: And structure for this controller is following: I have two horizontal collection

天青网部署

Hello my fellow developers! I am currently struggling with a problem in the latest Visual Studio 2017 Professional - Version 15.8(.1). Since The Update to Version 15.8, I am unable to publish any

模拟护照认证行为

I'm using passport.js authentication for different API's and works fine, but I want to separate the code for each one and I'm stuck calling passport.authenticate('facebook'). I'll put Facebook code

弹簧应用程序返回空JSON

I've started reading "Learning Spring Boot 2.0 - Second Edition: Simplify the development of lightning fast applications based on microservices and reactive programming" and am having trouble with one

使用JavaScript在没有Ajax的情况下上传文件

I try to upload a file using input tag and type='file', i want to save that in my project folder. Can i do that with the help of javascript without using ajax?.. Is there any possibility available?

使用Perl脚本将数据添加到Excel表中并删除现有数据

im new to perl, im trying to read an excel file. And trying to write into another excel sheet when ever required data is found. I found few codes online and edited them, writing into excel

Java/Spring异常,而我想上我的服务器

getting exception : SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/C:/Users/apoorva.dubey/.m2/repository/ch/qos/logback/logback-classic/1.1.7/logback-classic-

Django 2中的URL映射

so moving from Django 1.9 to Django 2 is not so smooth for me. I have struck in the URL patterns. Django 2.0 uses path instead of URL, How to convert these URL patterns to Django 2.0 compatible? url(

为什么我们需要弹簧休息,如果我们有春天MVC?

If we can create REST Api using Spring MVC then why do we need Spring REST? Spring MVC is based on servlet,is Spring REST also based on servlet? Which specifications do Spring MVC and Spring REST

JavaFX创建窗格的小预览

I have a project where I have two windows, basically you could compare it with powerpoint in presentation mode. In one of my windows I would like do show a small preview in a corner of what is shown

GeoMyPoT奇怪缺失值消息

I have a really strange missing values message which is not reproducible and I also can't find the problem. Any suggestion? Once I get the warning, once not, and by counting NAs, I don't find it. &

用Python读取和替换C*IFNDEF/YEN子域外壳

I wanted to replace the old inclusion guard macros with a #pragma once in a huge project. #ifndef FOO_H #define FOO_H class foo { }; #endif I wonder, what could be a reliable strategy to replace

.NET核心控制台应用程序中的打印文档

I need to print any doc type in console app, i tried using System.Drawing.Printing, but it could not be found in VS. System.Drawing.Printing.PrintDocument printDocument = new System.Drawing.Printing.

错误2:LD返回1个退出状态,一个数组的乘积

I am partaking in an online course and have come across a question which involves making a simple program which finds the product of all elements in an array. I understand it is a simple question but

我可以在哪里下载iXDaveSpUp16A5357B的XCODE?

I want to test my app by Iphone7, and IOS version(16A5357B) doesn't support ,where can I find it? here is supported version,I want to know where can I download it

作业调度程序在Android中杀死我的应用程序后不工作?

I have used a timer to call a method at 5 seconds interval inside a job scheduler. But the job scheduler only running on app running stage,if i kill the app the job scheduler was not worked. How to

多重调用控制器异步方法不同时完成

I've the following Home controller: [HttpGet] public async Task IndexAsync() { Response.Write($"{Thread.CurrentThread.ManagedThreadId} - {DateTime.Now} begin <br>");

在输入输出中的输入焦点不能正常工作

I have a text input and a small script to focus on it after a few seconds: setTimeout(() => { debugger; //Emulates a breakpoint document.getElementById("textinput").focus(); }, 2000); &

COLMAP摄影测量:重建只提供点云,无网格

I've been trying to use COLMAP to produce 3D meshes from photographs, but all I can get is useless point clouds. I've studied various YouTube tutorials, but the results I get differ from what I am

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