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Why does one use dependency injection?

.... So step 1 in your code is that you do: ICanLog logger = new Logger(); Now the type inference doesn't change type any more, you always have one single interface to develop against. The next step is that you do not want to have new Logger() over and over again. So you put the reliability to creat...
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What really is a deque in STL?

...ular vector of capacity 1000 with 100 elements in it at positions 0 to 99. Now when a push_Front happens you just push at the end i.e. at position 999, then 998 etc. until the two ends meet. Then you reallocate (with exponential growth to guarantee amortizet constant times) just like you would do wi...
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Simple insecure two-way data “obfuscation”?

...is that DES is no longer considered state-of-the-art security. That title now goes to the AES algorithm I discuss below. – Mark Brittingham Dec 12 '08 at 13:04 ...
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Python group by

...AT'), ('5594916', 'ETH'), ('1550003', 'ETH')] input.sort(key=sortkeyfn) Now input looks like: [('5238761', 'ETH'), ('5349618', 'ETH'), ('962142', 'ETH'), ('7795297', 'ETH'), ('7341464', 'ETH'), ('5594916', 'ETH'), ('1550003', 'ETH'), ('11013331', 'KAT'), ('9843236', 'KAT'), ('9085267', 'NOT'),...
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Configure Flask dev server to be visible across the network

... I don't know if anyone else has experienced it, but I tried this method first as per the QuickStart docs, but for some odd reason the IP kept running at 127.0.0.1 (I setup my Flask executable properly, or so it seemed, wasn't sure wha...
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Can anonymous class implement interface?

... @ZainRizvi No, it didn't. As far as I know, it's still in production. The concern raised seemed strange to me then, and arbitrary at best to me now. It was basically saying "Don't use a framework, things will break!". They didn't, nothing went pop, and I'm not sur...
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How do you mock out the file system in C# for unit testing?

...dly posted it online here. I've used this approach to mock out DateTime.UtcNow in an IClock interface (really really useful for our testing to be able to control the flow of time!), and more traditionally, an ISqlDataAccess interface. Another approach might be to use TypeMock, this allows you to int...
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Extract a substring according to a pattern

...001" "E002" "E003" 4a) substring/regex If the colon were not always in a known position we could modify (4) by searching for it: substring(string, regexpr(":", string) + 1) 5) strapplyc strapplyc returns the parenthesized portion: library(gsubfn) strapplyc(string, ":(.*)", simplify = TRUE) ## [1] ...
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How to serialize a TimeSpan to XML

... The connect link is now broken, maybe it can be replaced with this one:connect.microsoft.com/VisualStudio/feedback/details/684819/… ? The technique also looks a little different... – TJB May 11 '15 at 23:...
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System.IO.Packaging

... When I went to the link in the answer, I didn't see how I would know to add the WindowsBase.Net library. I added it and I now have access to system.io.packaging. So thanks for that, but could you explain what I'm not seeing about knowing to access the system.io.packaging through the Windo...