Open letter to students with homework problems and How to ask homework questions: Make a genuine attempt yourself, show your code, ask a specific question. — kaylum 12 secs ago

@Dai Sorry, I am probably not being very clear. It is my understanding that type-guard functions are functions that are manually created by programmers in order to narrow down the object type of an incoming variable. However, I don't want to manually create any code. Instead, if I use the popular "class-transformer" library, then I can simply feed it a class constructor, it learns the schema from that, and passes me back sound data. — James 7 secs ago

Welcome to Stack Overflow (SO). SO is a question and answer page for professional and enthusiast programmers. Please add your own code to your question. You are expected to show at least the amount of research you have put into solving this question yourself. — Jetchisel 49 secs ago

See IANA - Number resources, especially IPv4 Special Purpose Address Registry, and RFC 6890. 0.0.0.0 is often interpreted as any IPv4 address. However, search pure seeking for information questions are off-topic for Stack Overflow. Such information can be found easily with using a www search engine. Stack Overflow is a site on which programmers help other programmers on getting their code working. — Mofi 15 secs ago

See IANA - Number resources, especially IPv4 Special Purpose Address Registry, and RFC 6890. 0.0.0.0 is often interpreted as any IPv4 address. However, a pure seeking for information question is off-topic for Stack Overflow. Such information can be found easily with using a www search engine. Stack Overflow is a site on which programmers help other programmers on getting their code working. — Mofi 7 secs ago

Welcome to Stack Overflow (SO). SO is a question and answer page for professional and enthusiast programmers. Please add your own code to your question. You are expected to show at least the amount of research you have put into solving this question yourself. — Cyrus 35 secs ago

Probably the question for softwareengineering.stackexchange.com , it's too unspecific for SO. Data could be hosted on a server and fetched to env variables before build with a script. Data could be fetched from API inside the app, which is the most common way to do this. "But it seems it is not possible to use variable inside import statement" - this is what dynamic import and require are for, make sure that files from other envs aren't included to a bundle. "Any other caveats for this solution?" - there's no dev/prod distinction this way. — Estus Flask 47 secs ago

Welcome to Stack Overflow. Please take the tour to learn how Stack Overflow works and read How to Ask on how to improve the quality of your question. Please see: Why is “Is it possible to…” a poorly worded question? (don't just change your question to "How"). Please show your attempts you have tried and the problems/error messages you get from your attempts. It is unclear what you are asking or what the problem is. If possible, add a minimal reproducible example to your question. — Progman 40 secs ago

"or is there any widgets I can import ... " --> softwarerecs.stackexchange.com — Mawg says reinstate Monica 59 secs ago

You might also be interested in this Open letter to students with homework problems — Stef 27 secs ago

@dai: And C# also special-cases non-generic collections, providing a way to do type-safe enumeration even though the non-generic IEnumerator methods only work with objects. That was implemented back in the v1.0 and v1.1 days (before generics were introduced in v2.0) so that programmers didn't have to sprinkle casts into foreach loops — Flydog57 49 secs ago

Note: new is not required to make an object in C++ and the general recommendation is to use new as little as possible because it is a lot trickier to use correctly than it looks. MyQueue <int> q; will provide an automatically allocated (and thus automatically deleted at the end of the current scope) MyQueue and step around the problem highlighted by Cody Gray. — user4581301 26 secs ago

Stack Overflow is not a site providing programmers doing your job for you or helping you out in this general way. Please read the "What topics can I ask about here?" Help Center page. — Niklas E. 52 secs ago

Thanks bro! And you can't tell me how to sort the table according to a certain algorithm. More precisely, the Title column. I want to do something like this: In each department, the first were Coders, then Programmers, and only then system administrators. These are all approximate data — Азат 18 secs ago

Most of the handy syntaxes offered by Highend languages like Python, JS are not available in C. To simply say, whatever the inefficiencies that C programmers faced back in the day, were solved in these languages. — ram914 15 secs ago

Welcome to Stack Overflow. Please read Open Letter to Students with Homework Problems. You can't just dump your problem statement here and expect us to do it for you. It's also a good idea to take the tour, read about what's on-topic in the help center, and How to Ask. — Chris 55 secs ago

Open letter to students with homework problems — qwerty 24 secs ago

Java does not have tail call optimization. Hence, almost every recursion is bound to produce a StackOverFlowError if the input(s) is (are) large enough. The only way to prevent this problem would be to transform the recursion in a (sufficiently effective) iteration. — Turing85 28 secs ago

StackOverflow is not a homework service. Make a fair attempt and come back with specific questions about that attempt. See the open letter to students with homework problems. — Willem Van Onsem 40 secs ago