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Best ways to teach a beginner to program? [closed]
...es the dual purpose of teaching the debugging tools and teaching how to ID errors without tools.
Once, or if, the project gets functional you can use it to introduce refactoring tools. Its good if you can then expand the project with some simple features which you never planned for. This usually me...
How to use SCNetworkReachability in Swift
...ermine whether the network is online. Just make your connection and handle errors if it fails. Making a connection can at times fire up the dormant offline radios.
The one valid use of Reachability is to use it to notify you when a network transitions from offline to online. At that point you shoul...
How to get root view controller?
... = pVC
}
if presentedVC == nil {
print("EZSwiftExtensions Error: You don't have any views set. You may be calling them in viewDidLoad. Try viewDidAppear instead.")
}
return presentedVC
}
Its included as a standard function in:
https://github.com/goktugyil/EZSwiftExtension...
Why shouldn't I use “Hungarian Notation”?
...ss unsafe data to functions requiring safe data. You should make it a type error, so that it is impossible to do so. Any unsafe data should have a type that is marked unsafe, so that it simply cannot be passed to a safe function. To convert from unsafe to safe should require processing with some kin...
Why use a READ UNCOMMITTED isolation level?
...for current, non-static data e.g. Year to date sales.
It risks a margin of error (maybe < 0.1%) which is much lower than other uncertainty factors such as inputting error or just the randomness of when exactly data gets recorded minute to minute.
That covers probably the majority of what an Bus...
What is “entropy and information gain”?
...rees (nor is it guaranteed to be globally-optimal one w.r.t classification error). This is in fact an NP-complete problem...
– Amro
May 29 '15 at 15:16
1
...
What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
...TUArray could have helped me, but I didn't like fighting with cryptic type errors and efforts necessary to write polymorphic code with STUArray.
So the problem with Arrays is that they are not well suited for numerical computations. Hmatrix' Data.Packed.Vector and Data.Packed.Matrix are better in t...
Should I use multiplication or division?
...ding mode. Multiplying by the reciprocal is always going to introduce more error, at least because one more rounding must happen.
– Electro
Apr 21 '13 at 10:06
...
What's the difference between using “let” and “var”?
...t baz = "Bazz";
console.log(baz);
}
console.log(baz); // ReferenceError
}
run();
The reason why let keyword was introduced to the language was function scope is confusing and was one of the main sources of bugs in JavaScript.
Take a look at this example from another stackoverflow questi...
CSS to make HTML page footer stay at bottom of the page with a minimum height, but not overlap the p
...
The CSS under "basic common markup" had a small error which caused it to not work (the error was not present in the linked "DEMO", which is ok). I took the liberty of fixing it.
– sleske
Jul 12 '18 at 13:57
...