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How can I replace a newline (\n) using sed?

...les and needs to process the whole file to begin the process. Long answer from the sed FAQ 5.10 5.10. Why can't I match or delete a newline using the \n escape sequence? Why can't I match 2 or more lines using \n? The \n will never match the newline at the end-of-line because the newline is always ...
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Comparing two java.util.Dates to see if they are in the same day

... I am actually surprised to see this, but even from a performance standpoint, this SimpleDateFormat method is actually faster than the other one mentioned here using Calendars. On average it takes half the time as the Calendar method. (At least on my system). Kudos! ...
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Android and XMPP: Currently available solutions [closed]

...smack for developing my xmpp client,I am facing a problem > When i come from 1st time login I start my chatting with user B and receiving messages from user B also that is fine.i switch off my wifi and switch on it again then programatically reconnecting my jabber server and again login my accoun...
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Call UrlHelper in models in ASP.NET MVC

...ference of the current HttpContext HttpContext.Current which is derived from System.Web. Therefore, the following will work anywhere in an ASP.NET MVC application: UrlHelper url = new UrlHelper(HttpContext.Current.Request.RequestContext); url.Action("ContactUs"); // Will output the proper link a...
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What is “git remote add …” and “git push origin master”?

...gms and concepts, it has the same zenlike clarity that I've come to expect from UNIX command line tools. You should consider taking some time off to read one of the many good git tutorials available online. The Pro Git book is a good place to start. To answer your first question. What is git remote...
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How to stop a PowerShell script on the first error?

...tell the caller of your script that it has failed. Building on top of Exec from the library Psake, a script that has the structure below will stop on all errors, and is usable as a base template for most scripts. Set-StrictMode -Version latest $ErrorActionPreference = "Stop" # Taken from psake ht...
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Why do I need to override the equals and hashCode methods in Java?

... the general contract for Object.hashCode(), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable. Let's try to understand it with an example of what would happen if we override equals() without overriding ...
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Python data structure sort list alphabetically

... Using the second example on a pymongo find_one() result from a MongoDB database, I get error: descriptor 'lower' requires a 'str' object but received a 'unicode'. The result is an array of strings and implemented like this: results['keywords'] = sorted(keywords['keywords'], key...
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Reading ePub format

...8) create an NSURL using fileURLWithPath:, where the path is the full path from (7c). Load this request using the UIWebView you created in (1). You'll need to implement forward / backward buttons or swipes or something so that users can move from one chapter to another. Use the <spine> to wor...
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What is array to pointer decay?

... college. I'm sure anyone who's interested can get a more accurate picture from your upvoted comment. – system PAUSE Sep 23 '09 at 15:17 ...