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What is an unsigned char?

...nsigned. Now, i had a discussion with someone about what happens when you convert the value -1 of type int to unsigned char. He refused the idea that the resulting unsigned char has all its bits set to 1, because he was worried about sign representation. But he don't have to. It's immediately follo...
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How do I get currency exchange rates via an API such as Google Finance? [closed]

... Thanks for all your answers. Free currencyconverterapi: Rates updated every 30 min API key is now required for the free server. A sample conversion URL is: http://free.currencyconverterapi.com/api/v5/convert?q=EUR_USD&compact=y For posterity here they are alon...
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Test if string is a guid without throwing exceptions?

I want to try to convert a string to a Guid, but I don't want to rely on catching exceptions ( 18 Answers ...
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How to Calculate Execution Time of a Code Snippet in C++

...HighDateTime; uint64 ret = li.QuadPart; ret -= 116444736000000000LL; /* Convert from file time to UNIX epoch time. */ ret /= 10000; /* From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals */ return ret; #else /* Linux */ struct timeval tv; gettimeofday(&tv, NULL); uint64 ...
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What is Type-safe?

... call it like this: Sum = AddTwoNumbers(5, "5"); Javascript automaticly converts the 5 to a string, and returns "55". This is due to javascript using the + sign for string concatenation. To make it type-aware, you would need to do something like: function AddTwoNumbers(a, b) { return Number(...
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Cast Int to enum in Java

... This should be the right way and best practice to convert int to enum, and i think you can simplify the problem by public static A GetValue(int _id) { for(A a:A.values() { if(a.getId()==_id) { return a; }} return null; } Get rid of the None, isE...
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How do I reverse an int array in Java?

...t[]>, containing one element. There is AFAICS no simple built-in way to convert an int[] to an Integer[]. – Martin Rust Sep 22 '16 at 7:14 4 ...
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Value of type 'T' cannot be converted to

...xception, just like with any invalid cast. But I don't see why it couldn't convert to object and then to T. I agree with Triynko, although I suppose the designers had boxing/unboxing in mind. – Fernando Gómez May 30 '19 at 23:32 ...