history

Why are 8 and 256 such important numbers in computer sciences?

坚强是说给别人听的谎言 提交于 2019-12-03 01:36:59
I don't know very well about RAM and HDD architecture, or how electronics deals with chunks of memory, but this always triggered my curiosity: Why did we choose to stop at 8 bits for the smallest element in a computer value ? My question may look very dumb, because the answer are obvious, but I'm not very sure... Is it because 2^3 allows it to fit perfectly when addressing memory ? Are electronics especially designed to store chunk of 8 bits ? If yes, why not use wider words ? It is because it divides 32, 64 and 128, so that processor words can be be given several of those words ? Is it just

Vue router and webpack - history mode config localhost

匿名 (未验证) 提交于 2019-12-03 01:36:02
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: Basically, I'm using Vue cli with webpack template and I need to use history mode in vue router, but i'm using params for a route. I read this doc: https://router.vuejs.org/en/essentials/history-mode.html and I look this thread too: Problems with vue router (history mode) in development server Vue.js - “Cannot GET /config” So I change webpack.dev.conf.js from: historyApiFallback: { rewrites: [ { from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') }, ], } to historyApiFallback: true Now I get a blank page when tried to

How to enable spark-history server for standalone cluster non hdfs mode

匿名 (未验证) 提交于 2019-12-03 01:36:02
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: I have setup Spark2.1.1 cluster (1 master 2 slaves) following http://paxcel.net/blog/how-to-setup-apache-spark-standalone-cluster-on-multiple-machine/ in standalone mode. I do not have a pre-Hadoop setup on of the machine. I wanted to start spark-history server. I run it as follows: roshan@bolt:~/spark/spark_home/sbin$ ./start-history-server.sh and in the spark-defaults.conf I set this: spark.eventLog.enabled true But it fails with the error: 7/06/29 22:59:03 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled;

How to fetch asset modification history in hyperledger fabric

匿名 (未验证) 提交于 2019-12-03 01:36:02
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): 由 翻译 强力驱动 问题: I am using IBM bluemix blockchain service to tryout some smart contract logic for my asset sharing demo. Is there anyway to query the asset modified history in hyperledger fabric network. I have checked with documentations for both fabric 0.6 and 1.0 versions, but I can find only the stub.pushState(key,value_json) and stub.getState(key) to interact width the ledger. But using stub.getState(key) , I can fetch only the latest entry of the key, but how can I fetch and display the series of changes/modification written for the same key

Using browserHistory.push to change Route dynamically doesn't work with react-router v4

匿名 (未验证) 提交于 2019-12-03 01:33:01
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 try to do a simple redirect in a function... I tried this: Router.browserHistory.push('/dashboard'); But then I got this error: Uncaught TypeError: Cannot read property 'push' of undefined whats my fail? 回答1: Creating a new browserHistory won't work because <BrowserRouter> creates its own history instance, and listens for changes on that. So a different instance will change the url but not update the <BrowserRouter>. browserHistory is not available form react-router-dom package from v4 , and is separated to history package. Navigating with

How to clear the WKBackForwardList of a WKWebView?

匿名 (未验证) 提交于 2019-12-03 01:33:01
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: It appears that the backForwardList of a WKWebView is readonly, but I've seen people so some pretty magical things to get around this. I need to figure out some way of clearing the history of a WKWebView. Any ideas how I might so this? So far I've tries a few tricks that have failed: using keyValue:forKey didn't work. using a C pointer -> didnt work. I've seen people talk about synthesizing the property and extending the class but I don't really know how that works and couldn't figure it out. Any other ideas? 回答1: This code compiles, but I

Using HTML5 pushState() in IE9

匿名 (未验证) 提交于 2019-12-03 01:29:01
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: Is there any way to use HTML5 History API ( pushState ) in IE9? If there is a solution for all other browsers that would be great! 回答1: History.js Quote from the repo: History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you can modify the URL directly, without needing to use hashes anymore. For HTML4 browsers it will revert back to using the old

Export TFS 2010 History to Excel or Text Document

匿名 (未验证) 提交于 2019-12-03 01:26:01
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: How do you export history from TFS 2010 that includes the user, date and the complete comment (not truncated)? For example, in Team Explorer: right-click team member name > show check-in history. This will bring up the user's check-in history, but the comments are truncated. 回答1: The easiest way is to connect to the TFSWharehouse from excel, then pull the data from the source control history in a excel sheet. This is really simple and very powerful. You'll find useful info here: http://www.woodwardweb.com/vsts/getting_started.html

Cordova - window.history.back() not working on HTML back button in iOS 9

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: In my application I am using window.history.back to navigate back to previous View Declaration of back button Button action: $("#verification_back_icon").on("click", function(e) { if(checkDirtyVacation()) { e.preventDefault(); if(backbtnAlt== false) { backbtnAlt =true; confirm("All data will be lost. Do you want to continue?", function(r){ if(r){ //onBackKeyDown(); clearVacationvalues(); window.history.back();//this is not working in iOS 9 }else{ } backbtnAlt =false; }); } } else { e.preventDefault(); if($(".vaction_location").hasClass(

Failed to execute &#039;pushState&#039; on &#039;History&#039; error when using window.history.pushState function

匿名 (未验证) 提交于 2019-12-03 01:15:01
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'm using window.history in JavascriptMVC application to enable back/forward/refresh functionality for each controller. Every time I load a new controller I'm using window.history.pushState to add a new state to history. And then on back/refresh I'm using the saved state and reuse the data to build the controller again. The whole idea works fine excepting one issue on specific scenario. I'm getting the following error: Failed to execute 'pushState' on 'History': An object could not be cloned. The same data is added without problem on other