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How do I sort an observable collection?

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How to send an email from JavaScript

I want my website to have the ability to send an email without refreshing the page. So I want to use Javascript. 20 Answers...
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Should I use single or double colon notation for pseudo-elements?

Since IE7 and IE8 don't support the double-colon notation for pseudo-elements (e.g. ::after or ::first-letter ), and since modern browsers support the single-colon notation (e.g. :after ) for backwards compatibility, should I use solely the single-colon notation and when IE8's market share drops...
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Converting NSString to NSDate (and back again)

How would I convert an NSString like " 01/02/10 " (meaning 1st February 2010) into an NSDate ? And how could I turn the NSDate back into a string? ...
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Force update of an Android app when a new version is available

I have an app in Google Play Store. When an update version is available, the older version will become unusable – that is, if users do not update the app, they do not enter in the app. How can I force users to update the app when a new version becomes available? ...
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How can I use optional parameters in a T-SQL stored procedure?

I am creating a stored procedure to do a search through a table. I have many different search fields, all of which are optional. Is there a way to create a stored procedure that will handle this? Let's say I have a table with four fields: ID, FirstName, LastName and Title. I could do something ...
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How to link Docker services across hosts?

Docker allows servers from multiple containers to connect to each other via links and service discovery . However, from what I can see this service discovery is host-local. I would like to implement a service that uses other services hosted on a different machine. ...
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Why do you program in assembly? [closed]

I have a question for all the hardcore low level hackers out there. I ran across this sentence in a blog. I don't really think the source matters (it's Haack if you really care) because it seems to be a common statement. ...
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How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?

I have this two classes. My main Activity and the one that extends the AsyncTask , Now in my main Activity I need to get the result from the OnPostExecute() in the AsyncTask . How can I pass or get the result to my main Activity? ...
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DateTime2 vs DateTime in SQL Server

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