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Difference between method and function in Scala
...nd co-variant on the result.
That variance means that a Function1[Seq[T], String] is a subtype of Function1[List[T], AnyRef]. Being a subtype means it can be used in place of it. One can easily see that if I'm going to call f(List(1, 2, 3)) and expect an AnyRef back, either of the two types above w...
Difference between case object and object
...lt implementations of serialization
a prettier default implementation of toString, and
the small amount of functionality that they get from automatically inheriting from scala.Product.
Pattern matching, equals and hashCode don't matter much for singletons (unless you do something really degener...
How do I enable/disable log levels in Android?
...ay hurt your performance if it's in some hot code path. Even things like toString() or String.format() can be significant.
– Błażej Czapp
Jul 6 '12 at 16:34
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Capitalize or change case of an NSString in Objective-C
I was wondering how to capitalize a string found in an object in an NSMutableArray .
3 Answers
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How to replace multiple strings in a file using PowerShell
... customising a configuration file. I want to replace multiple instances of strings within this file, and I tried using PowerShell to do the job.
...
Can I use Objective-C blocks as properties?
...impleBlock)(void);
@property (nonatomic, copy) BOOL (^blockWithParamter)(NSString *input);
If you are going to be repeating the same block in several places use a type def
typedef void(^MyCompletionBlock)(BOOL success, NSError *error);
@property (nonatomic) MyCompletionBlock completion;
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What characters do I need to escape in XML documents?
... library, they will do the escaping for you. Many XML issues are caused by string concatenation.
XML escape characters
There are only five:
" "
' '
< &lt;
> &gt;
& &amp;
Escaping characters depends on where the special character is used.
The ex...
Location Services not working in iOS 8
...t wanna show custom explanation to the user, just set this key to an empty string.
– nonamelive
Sep 12 '14 at 23:43
7
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Is there a built-in method to compare collections?
...ust specify a correct IComparer<T> for those keys. For example, with string keys (which exhibit this issue), you must do the following in order to get correct results:
dictionary1.OrderBy(kvp => kvp.Key, StringComparer.Ordinal).SequenceEqual(dictionary2.OrderBy(kvp => kvp.Key, StringCom...
Most efficient conversion of ResultSet to JSON?
The following code converts a ResultSet to a JSON string using JSONArray and JSONObject .
14 Answers
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