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How to convert a number to string and vice versa in C++
...base = 10);
Each of these take a string as input and will try to convert it to a number. If no valid number could be constructed, for example because there is no numeric data or the number is out-of-range for the type, an exception is thrown (std::invalid_argument or std::out_of_range).
If conver...
App store link for “rate/review this app”
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For versions lower than iOS 7 use the old one:
itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=YOUR_APP_ID
This works on my end (Xcode 5 - iOS 7 - Device!):
itms-apps://itunes.apple.com/app/idYOUR_APP_ID
For ...
Export a graph to .eps file with R
... typically export my graphs to a .pdf file (using the 'pdf' function), and it works quite well. However, now I have to export to .eps files.
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How to lose margin/padding in UITextView?
I have a UITextView in my iOS Application, which displays a large amount of text.
22 Answers
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How to make a class conform to a protocol in Swift?
... conform to protocol 'NSObjectProtocol'
You have to make your class inherit from NSObject to conform to the NSObjectProtocol. Vanilla Swift classes do not. But many parts of UIKit expect NSObjects.
class CustomDataSource : NSObject, UITableViewDataSource {
}
But this:
Type 'CellDatasDataSo...
Explain the encapsulated anonymous function syntax
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It doesn't work because it is being parsed as a FunctionDeclaration, and the name identifier of function declarations is mandatory.
When you surround it with parentheses it is evaluated as a FunctionExpression, and function ...
What is Haskell used for in the real world? [closed]
There is a lot of hype around Haskell, however, it is hard to get information on how it is used in the real world applications. What are the most popular projects / usages of Haskell and why it excels at solving these problems?
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Difference between object and class in Scala
...object O creates a singleton object O as instance of some anonymous class; it can be used to hold static members that are not associated with instances of some class.
object O extends T makes the object O an instance of trait T; you can then pass O anywhere, a T is expected.
if there is a class C, t...
EF Code First foreign key without navigation property
Let's say I have the following entities:
6 Answers
6
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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
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The params in a controller looks like a Hash, but it's actually an instance of ActionController::Parameters, which provides several methods such as require and permit.
The require method ensures that a specific parameter is present, and if it's not provided, the require me...