Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it. You may be able to get help on the Software Recommendations Stack Exchange, but please read through their help center first to ensure your question is on topic there. — MattDMo 10 secs ago

Well, @phuclv -- looks like you've also learned how to recognize Google programmers? — Sam Varshavchik 23 secs ago

It would be easier to understand for new programmers if you set the datacontext right after initializing the viewmodel and not in the setter of the viewmodel — Thomas Klammer 19 secs ago

@MammadYahyayev "learning" Java this deeply just for the sake of learning it makes very little sense unless you are actually trying wo write code that needs to know about / handle these kind of minute details. Most Java programmers have no idea of the difference, rightfully so because it is irrelevant in the day to day business. Working through the JLS and memorizing it will serve very little purpose. — luk2302 6 secs ago

I already used some font identifiers and none of them did it. I'm asking it on programming site because (surprise!) programmers usually use monospace fonts and can help me if they use it. Regarding your link, I consider fonts as part of software tools commonly used by programmers section — s-valent 42 secs ago

Also, of course “throwing an exception ... doesn’t happen often” if you make it expensive, because programmers will adapt; yet cultures where it isn’t have developed styles which successfully use unwinding for somewhat infrequent yet perfectly ordinary and non-erroneous events. (That sounds horrible if you’re used to conventional exceptions, but with a slight extension of the idea it becomes quite lovely.) — Alex Shpilkin 54 secs ago

One question per post please. If you are asking for a recommended library, that is off-topic for Stack Overflow, please use Software Recommendations — Charlieface 51 secs ago

Showing the code you tried might help with echo problem. A generalized "what is the best library?" question is not generally a good fit for Stack Overflow. If you want to keep this quesion here rather than Software Recommendations I suggest you pick the first question, show your code, and reword to show you are asking for help with your existing code. — Charlieface 6 secs ago

@Ian Starting with bad practices and outdated functions is the worst a beginner can do. w3schools and geekforgeeks are the two main reasons for new questions containing document.write and XMLHttpRequest. You can watch videos to get a quick overview. What's so bad about books? TBH, all good programmers I know regularly learn from books, In addition, MDN is a good source. — jabaa 47 secs ago

@Ian Starting with bad practices and outdated functions is the worst a beginner can do. w3schools and geeksforgeeks are the two main reasons for new questions containing document.write and XMLHttpRequest. Everybody can post their trash on blogs and YouTube. Even on Udemy I've seen well rated, but bad courses. You can watch videos to get a quick overview. What's so bad about books? They are peer reviewed, except perhaps at packtpub.com. TBH, all good programmers I know regularly learn from books, In addition, MDN is a good source. — jabaa 16 secs ago

But it tells you: copy constructor, but noncopyable object. Hmm backtrace shows we're in a map. Bingo. And it should never be a big mystery. It's only a Scooby-Doo mystery if one writes a massive pile of code first, and then tries to compile the whole thing. Professional C++ programmers don't write code this way. We only write a few lines at a time, then try to compile, test to make sure they work correctly, then write some more. Yes, C++ errors are often confusing. It takes time to learn how to read them. But, in practice, compilation errors won't have many suspects as their cause. — Sam Varshavchik 25 secs ago

Maybe also take a look at softwareengineering.stackexchange.com — Paul R 12 secs ago

@phoff the communication is indeed bi-directional, however it is done "under the hood" and you just set DataContext to your view model in the view. From programmers perspective the view-model knows nothing about the view. In other words you don't reference the view in your view-model code. — Piotr Golacki 55 secs ago

This question might be better asked on sqa or even softwareengineering. But the short answer is: smoke testing is whatever tests you feel you need to run to initially move forward with further testing. It's going to be different for everyone. In my case, I know I always need to check a specific feature because it's always breaking and it affects 75% of the application so I always run tests against that feature first. 'You're sniffing for smoke to detect if there is a fire.' — Marcel Wilson 52 secs ago

stackoverflow.com/questions/1132941/… and softwareengineering.stackexchange.com/questions/157373/… — wkl 28 secs ago

What exactly is your programming-related question, and the shortest code needed to reproduce said issue? I see a dump of what presumably is an assignment, but no question. See How do I ask and answer homework questions? and Open letter to students with homework problems tldr: we won't do your assignment for you, but if you have a specific issue we may be able to help with that — cocomac 42 secs ago

@martin.p Note that all of the comments are on the code you copied and pasted directly from that site. Do you see all of the issues with code you thought was ok, but turns out to be wrong in many ways? Just the fact that a function that is supposed to return a void * doesn't return anything should give you pause as to who gets to post articles on that site. There seems to be absolutely no peer-review there, and instead, you get page with "Likes" from unsuspecting new programmers. — PaulMcKenzie just now

How to ask homework question and Open letter to students with homework problems — Barmar 45 secs ago

@JohnGordon: I've come to the conclusion that new programmers just can't see the patterns in data that more experienced programmers can. We find these things trivial. However, I don't know how to pass this intuition on to others. — quamrana 38 secs ago

@MadPhysicist: Yes, that's the way I did it. However, there must be ways in this connected age where we can give new programmers a nudge. — quamrana 51 secs ago

New Programmers are essentially aphasic. Just like with learning a new language - when you don't know it, it all sounds like gibberish. But, once you know a language, it's impossible for it to sound like gibberish ever again. How do you learn a language? Speaking it. How do you learn to program? Do it. — BeRT2me 10 secs ago

Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it. You may be able to get help on the Software Recommendations Stack Exchange, but please read through their help center first to ensure your question is on topic there. — MattDMo 9 secs ago