Anyway, OT but: you'll get as much from learning as you dedicate to learning. You don't need to be "taught in school" to learn programming (and there are some .. well, not so good courses). The best programmers probably learned most of what they know outside of such environments .. — user2864740 57 secs ago

Your questions is a bit broad because it really asks several questions, and may be a better fit on Programmers SE. Anyway, Angular doesn't diff like React, but ng-repeat does keep up with what it is repeating and the associated elements. It will only change what needs to be changed. See the track by option of ng-repeat. Angular's tracking efficiency in this matter is why duplicates are not allowed in ng-repeat unless you use track by option to change what Angular watches to keep things in sync. — m59 2 mins ago

Investigating the veracity of blog posts that make unsubstantiated claims about certain technologies isn't really our specialty, nor is it the specialty of Programmers.SE. — Robert Harvey ♦ 1 min ago

@llnspectable cheers answer is perfect n his code is very neat anyone can grap it in one go. i respect your efforts too . y not instead of stamping on each other create a better ecosystem for upcoming programmers and learners — user3521918 1 min ago

More info here if you're interested ~ programmers.stackexchange.com/questions/114156/… — Phil 1 min ago

Probably more on-topic at programmers.stackexchange.com — Jonathon Reinhart 1 min ago

I'm voting to close this question as off-topic because it is about software licenses and fees, which should be addressed to the specific vendor. It is not about programming or use of programmers tools as defined in the help guidelines. — Ken White 2 mins ago

You will get as many answers as there are programmers. I think types that are fundamental, pervasive and application agnostic like std::string being all lower case gives them a feel like they are built in. So a std::string or a std::set feel part of the language like an int or a double. I only use capitalization for objects that contain more Application specific business logic. Like CustomerManager. I avoid capitalization in member functions wich seems common on Linux type systems. — Galik 1 min ago

It's a general topic about "Overload vs Default Values" where some other languages use "optional parameter" as the term instead of "default values". (It's different from Swift term "optional", which means "nilable".) Swift specific difference on the initializers is subclassing as Kelvin mentioned. — Yoichi 51 secs ago

I wouldn't say that n=O(n^2) is "misusing notation." It's good to keep in mind the formal definition, which you should use when taking the course, writing a paper for a CS journal, or talking to mathematicians, and keep this separate from the common incorrect usage, used by most programmers, that O(f) means something like c1*f+c2, or perhaps theta(f). When you hear someone say O(n^2), you can try to figure out which definition is meant based on the context, speaker, and speaker's intended audience. — Douglas Zare 2 mins ago

Stack Overflow is not a free pool of contract programmers. We expect you to try and solve your problems yourself, then post specific questions here. You've merely posted requirements - very different. — Duncan 52 secs ago

@Eran yes, a meaningful exception like a NullPointerException. What else would you throw, a ProgrammerScrewedUpException? A LocalVariableThatShouldNeverBeNullWasNullException? — immibis 24 secs ago

I now understand the order of the constructor calls and the reasons behind this, except I usually have a base class with only a default constructor, so I don't have to have explicit calls to Base(). Surely the compilers must still ignore the programmers indication that Base(pParent) should be called directly from the c'tors of both A and B? — quamrana 45 secs ago

@Shishdem you are wrong. I recommend to read the On-Top help again. "We feel the best Stack Overflow questions have a bit of source code in them, but if your question generally covers… software tools commonly used by programmers; and is a practical, answerable problem that is unique to software development … then you’re in the right place to ask your question!" — Matthias Bauch 21 secs ago

Thank you very much sir!. :-) Happy to know there are still programmers here who ain't arrogant and such. Stay Humble always sir. Thanks again. — Chuchigo Pokach Pikasaki 35 secs ago

This is a typical example for two common problems with question. First this is preliminary optimization, in the 3rd millenium compilers are probably much better than many programmers can do by hand. Then this is a xy problem, your problem with unrolling and redefinition of labels is just the one that you shouldn't be interested in, but why you'd trying such complicated constructs in the first place. — Jens Gustedt 1 min ago

This actually isn't as simple as string.split(), but in any case we can't expect new programmers to know that the split method exists, and what it's called. — mk. 59 secs ago

@AlexA. I have not tried the alternative but thanks for the tip. By now, I'm just learning Rcpp since it seems that provides an "easier" interface for non C++ programmers when calling C++ from within R. — AP13 51 secs ago

Smells like homework. Please have a look here: meta.programmers.stackexchange.com/questions/6166/… — Kai Mattern 1 min ago

@Seth I understand your frustration. I didn't know what javascript was a year ago and now I do it for a living, but you do need to understand that StackOverflow is a forum for "programmers and programming enthusiasts". We are not here to do your homework, rather to point you in the right direction, help, and induce learning. — Travis Clarke 1 min ago

I think this is more suited on programmers.stackexchange, anyway sorry Ken, it's hard to answer because many details are missing — niceman 54 secs ago

@MikeSeymour: Well, I had no intention of entering into a real argument about correct terminology. I'd personally just have used "semantics" as a synonym for "meaning" in a sentence like "[accessibility aside,] they are technically identical but differ in semantics to many programmers". Would you consider such a sentence outright wrong? — Christian Hackl 31 secs ago

@Leo: the general approach at Stack Overflow generally comes as a surprise to people who are used to Yahoo Answers, Reddit, etc. My opinion is that there is such a widespread demand for "free culture" on the internet that it is easy to forget that a request with no prior effort is, effectively, asking people to work for free. Whilst we may need practice in saying this diplomatically, it is nevertheless a useful message - it has the additional benefit that posters are encouraged to research their own problems, which in turn may make them into better programmers. — halfer 34 secs ago

@niceman this question is a poor fit for Programmers - it would be quickly voted down and closed over there, see meta.programmers.stackexchange.com/questions/6483/… Recommended reading: What goes on Programmers.SE? A guide for Stack Overflow — gnat 1 min ago

Is it just me who thinks all languages should have a default character analogous to 0? — Cawas 51 secs ago

A question like this probably belongs on programmers.stackexchange.com instead of here. — rmaddy 1 min ago

programmers.stackexchange.com/questions/276460/… — user2406032 2 mins ago

Wow, "two of the smartest programmers in the world" couldn't be bothered to offer a small code sample to help the OP. Nice. — Mac McMeans 45 secs ago

@JohnSullivan AJAX is perfectly usable, as is JavaScript. If you dislike some of the language features of JS, then feel free to look into CoffeeScript or TypeScript (best for C# programmers). If you want to use AJAX with an ASP.NET site, the server side component to use is Web API. — mason 1 min ago

@MattMcNabb: Well, I'm not just saying it worked. I'm saying it should work. I allocated that memory, I don't really understand why I wouldn't be able to access it. At any rate, I know stuff is getting more and more restricted to help the less capable programmers these days. So maybe things have changed since I was doing this. — Jonathan Wood 53 secs ago

I want it to be friendly for non-programmers (no compile) and friendly for programmers (see source & docs, create own handlers). What would you suggest? — Филип Димитровски 2 mins ago

@wildplasser: one simple explanation which comes to mind is that if that were allowed, programmers would use this feature often, because it's convenient. But it involves a lot of memory copying on big arrays, so language/standard creators are pushing us to use pointers more extensively this way (remember, C is a quite low-level language, and doesn't have references). — Sam Protsenko 55 secs ago

@SamProtsenko: C doesn't strike me as a language that would introduce such constraints because programmers might use it to shoot themselves in the foot. :) — Dolda2000 1 min ago