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Check OS version in Swift?
...0 or 11 using if:
let floatVersion = (UIDevice.current.systemVersion as NSString).floatValue
EDIT:
Just found another way to achieve this:
let iOS8 = floor(NSFoundationVersionNumber) > floor(NSFoundationVersionNumber_iOS_7_1)
let iOS7 = floor(NSFoundationVersionNumber) <= floor(NSFoundatio...
When to use Comparable and Comparator
...he instances properties.
EX: Person.id
Some of the Predefined Classes like String, Wrapper classes, Date, Calendar has implemented Comparable interface.
Comparator - java.util.Comparator: int compare(Object o1, Object o2)
A comparator object is capable of comparing two different objects. The cl...
How to open a new tab using Selenium WebDriver?
...
The code below will open the link in new Tab.
String selectLinkOpeninNewTab = Keys.chord(Keys.CONTROL,Keys.RETURN);
driver.findElement(By.linkText("urlLink")).sendKeys(selectLinkOpeninNewTab);
The code below will open empty new Tab.
String selectLinkOpeninNewTab = Ke...
Int to Char in C#
...e.WriteLine((char)49 == '1'); Will give True. As will char c = (char)49; string s = "1two3"; Console.WriteLine(c == s[0]); Using this cast is perfectly fine. Your explanation does not provide a valid example of it not working. Furthermore, Console.WriteLine((char)49 == 1); is false which essenti...
When to use a Content Provider
... if you don't intend to make it public.
It's good practice to provide the extra level of abstraction over your data to make it easier to change internally. What if you decide to change the underlying database structure at a later time? If you use a ContentProvider you can contain all the structur...
When to use setAttribute vs .attribute= in JavaScript?
...otice that though XML is explicitly case sensitive, the DOM spec calls for string names to be normalized, so names passed to getNamedItem are effectively case insensitive.
Example Usage:
var div = document.getElementsByTagName('div')[0];
//you can look up specific attributes
var classAttr ...
Proper way to return JSON using node or Express
...
That response is a string too, if you want to send the response prettified, for some awkward reason, you could use something like JSON.stringify(anObject, null, 3)
It's important that you set the Content-Type header to application/json, too.
va...
Checking for NULL pointer in C/C++ [closed]
...ad and more explicit. I see where they're coming from, I just disagree the extra stuff makes it any easier. (I hate the macro, so I'm biased.) Up to you.
I disagree with your argument. If you're not getting warnings for assignments in a conditional, you need to turn your warning levels up. Simple a...
C# Lazy Loaded Automatic Properties
...can use the 4.0 Lazy<T> type to create this pattern
private Lazy<string> _someVariable =new Lazy<string>(SomeClass.IOnlyWantToCallYouOnce);
public string SomeVariable => _someVariable.Value;
This code will lazily calculate the value of _someVariable the first time the Value e...
NSRange to Range
How can I convert NSRange to Range<String.Index> in Swift?
13 Answers
13
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