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How to read a CSV file into a .NET Datatable
... a single set of column headers specified in the first line. What you have appears to be more generic comma-delimited, discriminated data, requiring more sophisticated "ETL" to parse from the file into object instances of varying types (which could include DataRows of different DataTables).
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One SVN repository or many?
... Subversion. They have ~50 projects, ranging from very small to enterprise applications and their corporate website. Their plan? Start with a single repository, migrate to multiple if necessary. The migration is almost complete and they're still on a single repository, no complaints or issues repo...
window.onload vs
...Script libraries, Prototype, ExtJS, Dojo, JQuery, YUI, etc. provide nice wrappers around events that occur as the document is loaded. You can listen for the window onLoad event, and react to that, but onLoad is not fired until all resources have been downloaded, so your event handler won't be execut...
How to use background thread in swift?
... outer block")
})
})
Pre Swift 1.2 – Known issue
As of Swift 1.1 Apple didn't support the above syntax without some modifications. Passing QOS_CLASS_BACKGROUND didn't actually work, instead use Int(QOS_CLASS_BACKGROUND.value).
For more information see Apples documentation
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IISExpress Log File Location
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1 . By default applicationhost.config file defines following two log file locations. Here IIS_USER_HOME would be expanded as %userprofile%\documents\IISExpress\.
<siteDefaults>
<logFile logFormat="W3C" directory="%IIS_USER_HOME%\L...
Unable to Cast from Parent Class to Child Class
...eserializeObject<Child>(serializedParent);
I have a simple console app that casts animal into dog, using the above two lines of code over here
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“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...
...。很多做生鲜上门的平台都是这样，第一天用户在微店，App上下单，截至当天六点后，平台统计订单量，种类，连夜购买，第二天用户来上门自提。对于平台而言，走自提模式的优势是巨大的。蔬菜属于易耗品，卖不出去的损耗...
Redis cache vs using memory directly
...teresting properties:
Redis can be accessed by all the processes of your applications, possibly running on several nodes (something local memory cannot achieve).
Redis memory storage is quite efficient, and done in a separate process. If the application runs on a platform whose memory is garbage c...
What is the max size of localStorage values?
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Actually Opera doesn't have 5MB limit. It offers to increase limit as applications requires more. User can even choose "Unlimited storage" for a domain.
You can easily test localStorage limits/quota yourself.
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How do I update each dependency in package.json to the latest version?
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Looks like npm-check-updates is the only way to make this happen now.
npm i -g npm-check-updates
ncu -u
npm install
On npm <3.11:
Simply change every dependency's version to *, then run npm update --save. (Note: broken in recent (3.11) versions of npm).
Before:
"depende...