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How to initialize const member variable in a class?
...ypically declared in a header file and a header file is typically included into many translation units. However, to avoid complicated linker rules, C++ requires that every object has a unique definition. That rule would be broken if C++ allowed in-class definition of entities that needed to be store...
How do I shuffle an array in Swift?
...) in zip(indices, stride(from: c, to: 1, by: -1)) {
// Change `Int` in the next line to `IndexDistance` in < Swift 4.1
let d: Int = numericCast(arc4random_uniform(numericCast(unshuffledCount)))
let i = index(firstUnshuffled, offsetBy: d)
swapAt(firs...
Tool to generate JSON schema from JSON data [closed]
...so far:
Online:
https://www.liquid-technologies.com/online-json-to-schema-converter (1 input)
http://www.jsonschema.net (1 input)
https://easy-json-schema.github.io (1 input)
Python:
https://github.com/gonvaled/jskemator (1 input but allows iteration)
https://github.com/perenecabuto/json_schema_g...
How to do ToString for a possibly null object?
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It would be great if Convert.ToString() had a proper overload for this.
There's been a Convert.ToString(Object value) since .Net 2.0 (approx. 5 years before this Q was asked), which appears to do exactly what you want:
http://msdn.microsoft.co...
Is there a way to access an iteration-counter in Java's for-each loop?
...n provide your own counter.
The reason for this is that the for-each loop internally does not have a counter; it is based on the Iterable interface, i.e. it uses an Iterator to loop through the "collection" - which may not be a collection at all, and may in fact be something not at all based on ind...
When to use Comparable and Comparator
...s are every future sorting use case would require a comparator, at which point the implementation of comparable may slow down users of the class, not speed them up.
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How do you make a HTTP request with C++?
...ee if it contains a 1 or a 0. Is it also possible to download the contents into a string?
22 Answers
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Why should I not include cpp files and instead use a header?
... same as any other. However, although not illegal, including source files into your program will pretty much eliminate any advantages you would've got from separating your source files in the first place.
Essentially, what #include does is tell the preprocessor to take the entire file you've speci...
Select multiple images from android gallery
... but i'm not satisfied with the answers. Mainly because i found something interesting in de docs in my IDE (i come back on this later) and thereby i don't want to use a custom adapter but just the vanilla one.
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function declaration isn't a prototype
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In C int foo() and int foo(void) are different functions. int foo() accepts an arbitrary number of arguments, while int foo(void) accepts 0 arguments. In C++ they mean the same thing. I suggest that you use void consistently when ...