Developer FAQs | Developer Questions And Answers

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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Javascript for loop to fill in object

I have an array of domains: var domains = ["domain1", "domain2", "domain3"];Expected result should be:

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