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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: Suppose I have a set of URIs that I am monitoring for availability. Each URI is either "up" or "down", and new URIs to monitor may be added to the system at any time: public enum ConnectionStatus { Up, Down } public class WebsiteStatus { public string Uri { get; set; } public ConnectionStatus Status { get; set; } } public class Program { static void Main(string[] args) { var statusStream = new Subject<WebsiteStatus>(); Test(statusStream); Console.WriteLine("Done"); Console.ReadKey(); } private static void Test(IObservable<WebsiteStatus>

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: I use Spring Cloud Feign and Sleuth with a Zipkin server. My problem is that when I enable Sleuth, then any simple request takes at least 600ms. Note that for tests purposes, I've set the sampler percentage of Sleuth at 1. Can I do something to improve that? Here some log of a request which takes 25ms without Sleuth and 700ms with Sleuth. (user calls /teams which calls /cities): 13:46:46.064 [http-nio-8080-exec-3] DEBUG o.s.c.s.instrument.web.TraceFilter - Received a request to uri [/teams] that should not be sampled [false] 13:46:46.064

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: I would like to control <option> list width of <select> drop down. By default, browser calculates larger text in the <option> and accommodes drop down. It doesn't look good in sites. I had tried the following CSS snippet and found working in FF. select{ width : 120px; } select option { width : 90px; } The only trouble causer is Chrome. Could u let me know if any workarounds. Demo 回答1: Googling it didn't turn out for me. I've only script option left out. The following code does the trick.. /* To trim the charaters in the option list */ var

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: I am trying to pass a function down to a child component in React. If I place the function within the ES6 class I have access to this.props.dispatch , but do not have access within mapStateToProps Conversely when I define the function outside of the ES6 class I seem to have access to the function but not this.props.dispatch Can someone identify what I am doing wrong to have both access to this.props.dispatch as well as having the function available in mapStateToProps function import React, { Component } from 'react'; import { connect } from

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: I want to make a function either using pure Javascript or also benefiting from jquery to count down to an ending time such as: //consumes a javascript date object function countDown(endtimme){ ... } and it should display in html such as <div id="time_left_box"> <h1>Time remaining</h1>: <p>hours left: ..remaining day will be here## <p> <p>minutes left: ##remaining day will be here## <p> <p>seconds left: ##remaining day will be here## <p> </div> Indeed and it would be even more great if it can refresh itself every second. I am very naive with

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: This is a follow up question from Grammar: difference between a top down and bottom up? I understand from that question that: the grammar itself isn't top-down or bottom-up, the parser is there are grammars that can be parsed by one but not the other (thanks Jerry Coffin So for this grammar (all possible mathematical formulas): E -> E T E E -> (E) E -> D T -> + | - | * | / D -> 0 D -> L G G -> G G G -> 0 | L L -> 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 Would this be readable by a top down and bottom up parser? Could you say that this is a top down

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): 由 翻译 强力驱动 问题: Why do elements with the CSS position: fixed applied to them cause Firefox to eat 100% CPU when scrolling the page they are in? And are there any workarounds? I've noticed this behavior on a few sites, for example the notification bar at the top of the page on StackOverflow. I'm using Linux in case that matters. 回答1: This is bug #201307 . 回答2: It's a bug reported in bugzilla Apparently a work-around (with mixed reports of success..) is to disable smooth-scrolling Just disable smooth scrolling in Edit > Preferences > Advanced. 回答3:

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): 由 翻译 强力驱动 问题: I was trying for my web test selecting an option. An example can be found here: http://www.tizag.com/phpT/examples/formex.php Everything works great except the selecting an option part. How to selecting an option by value or by label ? My Code: using OpenQA . Selenium . Firefox ; using OpenQA . Selenium ; using System . Collections . ObjectModel ; using System . Text . RegularExpressions ; using System . Threading ; using System . Diagnostics ; using System . Runtime . InteropServices ; class GoogleSuggest { static void Main () {

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: How to get the text of selected item from a drop down box element in html forms? (using python) How can I store the value to a variable, when I select one item from the drop down box using mouse? (ie. without using a submit button) This is for a application which I am doing in app engine which only supports Python. 回答1: Your question shows some misunderstanding on how web applications work. The user has to type an address in a browser to get to the application. That sends a request to the server. The server code (written in python) receives

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: I have a parent recyclerview with filled with cards and an inner recyclerview inside each card. The scrolling for the inner recyclerview inside the cards has been disabled but this has also affected the inner recyclerview's ability to receive click events. To disable the scrolling, I had followed a very similar approached to Lucas Crawford's answer here which suggested that you create a custom recyclerview class and override dispatchTouchEvent: Disable Scrolling in child Recyclerview android My class looks like this: public class