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What is this 'Lambda' everyone keeps speaking of?
...re a variable. In JavaScript:
function () {}; // very simple
Let's see now some uses for these lambdas.
Abstracting boilerplate code
Lambdas may be used to abstract away boilerplate code. For example loops. We're used to write for and while loops all day long. But this is code that does not be...
How to clear the cache in NetBeans
...cognized as implementing Throwable... I just deleted the stupid cache, and now all of it works fine.
– Ian Campbell
Sep 20 '13 at 0:59
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max value of integer
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Java 8 now has unsigned Integer as well: docs.oracle.com/javase/8/docs/api/java/lang/Integer.html
– Jakub Kotowski
Jun 26 '14 at 21:56
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Create space at the beginning of a UITextField
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This is what I am using right now:
Swift 4.2
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: p...
Strange out of memory issue while loading an image to a Bitmap object
...ts within the available memory.
Load a scaled down version into Memory
Now that the image dimensions are known, they can be used to decide if the full image should be loaded into memory or if a subsampled version should be loaded instead. Here are some factors to consider:
Estimated memory usa...
NSUserDefaults - How to tell if a key exists
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I know this is old, but having only just now needed this information, I need to point out that the 'containsObject:' reference means just that: the object. NOT the key. IOW, in your header file if you've defined: #define kMyKey ...
Returning a C string from a function
...ing like "my string" actually uses 9+1 (=10!) bytes. This is important to know when you finally get around to allocating strings dynamically.
So, without this 'terminating zero', you don't have a string. You have an array of characters (also called a buffer) hanging around in memory.
Longevity of ...
Direct casting vs 'as' operator?
...n explicitly defined, e.g.: int? i; string s = "5"; i = s as int; // i is now 5 s = null; i = s as int; // i is now null
– Anheledir
Sep 25 '08 at 10:41
3
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How does the const constructor actually work?
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compile-time constant values: Objects where the all field values are
known already at compile time, without executing any statements.
That puts some restrictions on the class and constructor. A const
constructor can't have a body (no statements executed!) and its class
must not have an...
How to dismiss keyboard for UITextView with return key?
...e reason to use UITextView is that it can hold text in multiple lines. And now I'm using it as a message box.
– Chilly Zhong
Apr 1 '09 at 6:12
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