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'printf' vs. 'cout' in C++
...s way better than printf, even if the question just asked for differences. Now, there is a difference - std::cout is C++, and printf is C (however, you can use it in C++, just like almost anything else from C). Now, I'll be honest here; both printf and std::cout have their advantages.
Real differen...
How to create NS_OPTIONS-style bitmask enumerations in Swift?
...tocol extensions take care of most of the boilerplate for these, which are now imported as a struct that conforms to OptionSetType. (RawOptionSetType has disappeared as of Swift 2 beta 2.) The declaration is far simpler:
struct MyOptions : OptionSetType {
let rawValue: Int
static let None ...
How to format numbers? [duplicate]
... max="5" step="1" value="2" title="number of decimal places?" />
Now the other version, without rounding.
This takes a different route and attempts to avoid mathematical calculation (as this can introduce rounding, or rounding errors). If you don't want rounding, then you are only dealing...
Definition of “downstream” and “upstream”
...ushing to upstream ("otherRepo" is still "upstream", where the information now goes back to).
Note the "from" and "for": you are not just "downstream", you are "downstream from/for", hence the relative aspect.
The DVCS (Distributed Version Control System) twist is: you have no idea what downstr...
How to resize the iPhone/iPad Simulator?
...Select Simulator
Goto Window tab
Select Physical Size option (cmd + 1)
Now if this dosen’t make size as per your interest then follow below steps :
Select Simulator
Goto edge of simulator. This will convert your cursor to resize option (Bidirectional arrow).
Now using this resize option you ...
Instantiate and Present a viewController in Swift
...he new Swift on Xcode 6 , and I tried some demo projects and tutorials. Now I am stuck at:
15 Answers
...
Why is super.super.method(); not allowed in Java?
...- RedItems can always be confident that the items it contains are all red. Now suppose we were able to call super.super.add():
public class NaughtyItems extends RedItems
{
@Override
public void add(Item item)
{
// I don't care if it's red or not. Take that, RedItems!
sup...
ruby operator “=~” [duplicate]
...
This operator matches strings against regular expressions.
s = 'how now brown cow'
s =~ /cow/ # => 14
s =~ /now/ # => 4
s =~ /cat/ # => nil
If the String matches the expression, the operator returns the offset, and if it doesn't, it returns nil. It's slightly more complicated than...
CSS values using HTML5 data attribute [duplicate]
I want to know if there's any way it's possible to set a css value using HTML5's data- attribute the same way that you can set css content . Currently it doesn't work.
...
jQuery hasClass() - check for more than one class
...
Just now noticed that I have 4 id="hello" elements there. Fixed version in order to make validators happy: jsbin.com/uqoku/2/edit
– Matchu
Feb 6 '10 at 22:38
...