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Looking for a clear definition of what a “tokenizer”, “parser” and...

...d on character strings and the radix/leading zero count on numbers, all in service of avoiding the user rejecting the transformated result. So what you missed is not only do lexers not necessarily strip information, but in fact they may need to capture information above and beyond the raw token]. ...
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What is a Portable Class Library?

...mposition.dll System.Net.dll System.Runtime.Serialization.dll System.ServiceModel.dll System.Xml.Serialization.dll System.Windows.dll (from Silverlight) You can find which members are supported by the Portable Class Library project in the reference topics for the .NET Framework C...
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Spring MVC: How to perform validation?

...ate it in the default constructor of the controller. Or have a @Component/@Service UserValidator that you inject (@Autowired) in your controller : very useful, because most validators are singletons + unit test mocking becomes easier + your validator could call other Spring components. Method 3 : ...
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REST API 404: Bad URI, or Missing Resource?

...and I would like to share my experience with you guys. I am building microservice architecture with rest APIs. I have some rest GET services, they collect data from back-end system based on the request parameters. I followed the rest API design documents and I sent back HTTP 404 with a perfect JSO...
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Do you have to put Task.Run in a method to make it async?

...e care of user interactions. However, for web application each request is serviced by a thread-pool thread and thus the number of active requests can be increased by saving such threads. Frequently using threadpool threads to simulate async operation is not scalable for web applications. True Asyn...
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How do I set up a basic Ruby project?

...mentation tool. And besides all of the above tools, their're some online service for ruby project: CI(Continuous Integration) travis-ci circleci codeship Code Review codeclimate And you can even genearate badges via http://shields.io/ for your open source project. That's my experience, ...
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What's wrong with using $_REQUEST[]?

...ff, know when data of what type is appropriate. For example, I have a web service which can return responses in URLEncoding, XML or JSON. The application decides how to format the response by checking the HTTP_ACCEPT header, but can be coerced into one specifically by sending the format parameter....
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How much does it cost to develop an iPhone application? [closed]

... day Obama app. Take another hit, dude. Now if you want to build backend services for your app, that number's going to go up even more. Everyone seems surprised that Instagram chewed through $500K in venture funding to build a new frontend and backend. I'm not. ...
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How to cancel a Task in await?

...od. Take for example a simple case where you need to upload some data to a service get it to calculate something and then return some results. public async Task<Results> ProcessDataAsync(MyData data) { var client = await GetClientAsync(); await client.UploadDataAsync(data); await ...
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...了.写入后记得把防火墙重起一下,才能起作用. [root@tp ~]# service iptables restart 现在IPTABLES配置表里什么配置都没有了,那我们开始我们的配置吧 (3)设定预设规则 [root@tp ~]# iptables -p INPUT DROP [root@tp ~]# iptables -p OUTPUT ACCEPT [root@tp ~...