OStack Q&A-Knowledge Sharing Community

0 votes

253 views

1 answer

ios - Left Align Cells in UICollectionView

I am using a UICollectionView in my project, where there are multiple cells of differing widths on a line. According to ... don't seem to get how this works. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

130 views

1 answer

mysql - When should I use a composite index?

When should I use a composite index in a database? What are the performance ramification by using a composite index) ... for geolat and geolng. Should I be? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

566 views

1 answer

How to capture the screenshot of a specific element rather than entire page using Selenium Webdriver?

Currently I'm trying to capture a screenshot using the Selenium WebDriver. But I can only obtain the whole ... a screenshot by selected item or element? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

79 views

1 answer

What is a class in PHP?

I'm having serious issues understanding PHP classes from a book. They seem very difficult. What is their purpose and how do they work? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

97 views

1 answer

c# - Example of Named Pipes

How do I write a simple--bare minimum needed for it to work--test application that illustrates how to use IPC ... message and replies "Roger That" to Program 1. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

980 views

1 answer

casting - Convert Int to String in Swift

I'm trying to work out how to cast an Int into a String in Swift. I figure out a workaround, using ... as NSNumber let xString : String = xNSNumber.stringValue Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

624 views

1 answer

mysql - Location of my.cnf file on macOS

I'm trying to follow along this tutorial to enable remote access to MySQL. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

185 views

1 answer

language design - Why doesn't Java support unsigned ints?

Why doesn't Java include support for unsigned integers? It seems to me to be an odd omission, given that ... division. What's the downside to including these? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

inheritance - Do interfaces inherit from Object class in java

Do interfaces inherit from Object class in Java? If no then how we are able to call the method of object class on ... e.equals(null); } } interface Employee { } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

126 views

1 answer

javascript - Download JSON object as a file from browser

I have the following code to let users download data strings in csv file. exportData = 'data:text/csv;charset=utf ... my code? Thanks for reading my question:) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

235 views

1 answer

html - What does appending "?v=1" to CSS and JavaScript URLs in link and script tags do?

I have been looking at a HTML 5 boilerplate template (from http://html5boilerplate.com/) and noticed the use of "?v=1 ... ></script>  Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

177 views

1 answer

A CORS POST request works from plain JavaScript, but why not with jQuery?

I'm trying to make a Cross Origin post request, and I got it working in plain JavaScript like this: var ... with a proper Access-Control-Allow-Origin header) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

456 views

1 answer

share - How to mount host volumes into docker containers in Dockerfile during build

Original question: How to use the VOLUME instruction in Dockerfile? The actual question I want to solve is -- how to ... -v Docker version 1.2.0, build fa7b24f Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

103 views

1 answer

javascript - How to embed fonts in HTML?

I'm trying to figure out a decent solution (especially from the SEO side) for embedding fonts in web pages. So ... of the standard fonts for web pages. Thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

216 views

1 answer

mysql - SQL - Update multiple records in one query

I have table - config. Schema: config_name | config_value And I would like to update multiple records in one query. I ... query is wrong :( Can you help me? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

278 views

1 answer

html - CSS Progress Circle

I have searched this website to find progress bars, but the ones I have been able to found show animated circles that ... any way I can do that using only CSS? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

181 views

1 answer

c# - Accessing MVC's model property from Javascript

I have the following model which is wrapped in my view model public class FloorPlanSettingsModel ... "; alert(floorplanSettings.IconsDirectory); Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

102 views

1 answer

Rails - Could not find a JavaScript runtime?

I created a new Rails project using rails 3.1.0.rc4 on my local machine but when I try to start the ... ::RuntimeUnavailable) Note: This is not about Heroku. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

330 views

1 answer

.net - How can I create a self-signed certificate using C#?

I need to create a self-signed certificate (for local encryption - it's not used to secure communications), ... certificate store or export to a PFX file. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

167 views

1 answer

Interfaces with static fields in java for sharing 'constants'

I'm looking at some open source Java projects to get into Java and notice a lot of them have some sort of 'constants' ... , "linux" }; // and on and on } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

204 views

1 answer

javascript - Difference Between throttling and debouncing a function

Can anyone give me a in-simple-words explanation about the difference between throttling and debouncing a ... .com/projects/jquery-throttle-debounce-plugin/ Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

279 views

1 answer

Is Python interpreted, or compiled, or both?

From my understanding: An interpreted language is a high-level language run and executed by an interpreter (a program ... a Python script is handled and run. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

302 views

1 answer

How to get all Errors from ASP.Net MVC modelState?

I want to get all the error messages out of the modelState without knowing the key values. Looping through to ... the ModelState contains. How can I do this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

Parsing huge logfiles in Node.js - read in line-by-line

I need to do some parsing of large (5-10 Gb)logfiles in Javascript/Node.js (I'm using Cube). The logline ... amounts of text data in Node.js? Cheers, Victor Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

94 views

1 answer

c# - Getting value from appsettings.json in .net core

Not sure what am I missing here but I am not able to get the values from my appsettings.json in my .net ... null. Is there something that I am missing here? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

137 views

1 answer

c# - ASP.NET MVC Conditional validation

How to use data annotations to do a conditional validation on model? For example, lets say we have the following ... in ASP.NET MVC 2 with data annotations? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

143 views

1 answer

javascript - How to use underscore.js as a template engine?

I'm trying to learn about new usages of javascript as a serverside language and as a functional ... have less experience with advanced javascript. Thanks Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

293 views

1 answer

objective c - How to scale a UIImageView proportionally?

I have a UIImageView and the objective is to scale it down proportionally by giving it either a height or width ... imageView and how do I correct the position? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Recent questions

Just Browsing Browsing

Most popular tags