Developer FAQs | Developer Questions And Answers

Do C standards specify how far the carry propagates when incrementing a pointer?

Consider the following situations:The National Semiconductor SC/MP has pointers which, when you keep incrementing them, will roll from 0x0FFF to 0x0000 because the increment circuit does not propagate the carry past the lower nybble of the higher byte. So if, for example, I want to do while(*ptr++) to traverse a...

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Avoid code duplication over classes

I am writing some classes and all of them implement a certain method they inherit from an interface. This method is close to the same for all the classes beside one call to a certain other function.

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How safe is it to remove the “-” in a randomly generated UUID?

I have this code:How safe is it to remove the "-" in the generated UUID? Would removing it defeat the purpose of it being globally unique and make the generated UUID prone to collisions?

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Why does Rust have a “Never” primitive type?

Rust's std::process::exit has the typewhere ! is the "Never" primitive type. Why does Rust need a special type for this?

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Collatz Conjecture Python – Incorrect Output Above 2 Trillion (Only!)

I've written a basic script in Python3 that calculates the Collatz Conjecture. It takes a positive integer as an input and returns the number the steps until the sequence drops down to 1.

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Confusion about “while(s1++ = s2++);” in C

Code:Output:(GCC Compiler)But according to me output should be puneay. pune should be copied in place of bomb and rest should be as it is.

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How can I pass multiple function overloads as a single argument?

This is another case of trying to get rid of a macro. Consider(Imagine f_() gets data form a .foo file or uses hard-coded "dummy" values, g_() does the same for .bar.) There might be a function to decide which overload to call:

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count items in list of lists

I have a list (ll) of lists (l1,l2,l3) that have the same length.is there a way to create a (summary?) table that counts/compares how many items are in each list, whitout using for/loop?

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Finding (multiset) difference between two arrays

Given arrays (say row vectors) A and B, how do I find an array C such that merging B and C will give A?

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