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Constructor of an abstract class in C#
... possible to write constructor for an abstract class in C#?
As far as I know we can't instantiate an abstract class.. so what is it for?
You can't instantiate the class, right?
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delete map[key] in go?
...ven if the key is already absent from the map.
delete(timeZone, "PDT") // Now on Standard Time
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Creating .pem file for APNS?
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I have followed the above steps and now its working.I have kept the certificate and the php script on my local web server (Xampp). I am able to get the device token , and i am using it in the php script. The php script is able to connect and send payload data....
Is there a command like “watch” or “inotifywait” on the Mac?
I want to watch a folder on my Mac (Snow Leopard) and then execute a script (giving it the filename of what was just moved into a folder (as a parameter... x.sh "filename")).
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Extracting text OpenCV
...s thinking of counting the number of bars, and imposing a threshold on it. Now I think, if the region is clean enough, it may also help if we can feed it to an OCR and get a confidence level for each detected character to be sure that the region contains text.
– dhanushka
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Temporarily disable some plugins using pathogen in vim.
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The tilde strategy doesn't seem to work now (as of version 2.3).
– echristopherson
Mar 25 '14 at 1:46
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Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...ults, but we've ascertained that it's at least one-quarter of all inputs.
Now let's look at a fixed-width (i.e. non-bignum) integer power function. For what portion inputs does it not simply overflow? To maximize the number of meaningful input pairs, the base should be signed and the exponent uns...
Why no ICloneable?
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ICloneable is considered a bad API now, since it does not specify whether the result is a deep or a shallow copy. I think this is why they do not improve this interface.
You can probably do a typed cloning extension method, but I think it would require a diff...
Why does NULL = NULL evaluate to false in SQL server
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Think of the null as "unknown" in that case (or "does not exist"). In either of those cases, you can't say that they are equal, because you don't know the value of either of them. So, null=null evaluates to not true (false or null, depending on you...
Surrogate vs. natural/business keys [closed]
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Now, after reading a lot about surrogate keys and natural keys, I think using surrogate keys is better. But, on my database, natural keys (a NVARCHAR(20)) must be unique. I don't understand how I can get more speed if I need ...