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What's the difference between the data structure Tree and Graph?
Academically speaking, what's the essential difference between the data structure Tree and Graph? And how about the tree based search and Graph based search?
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iOS 5 Best Practice (Release/retain?)
...e for writing apps to be used either with iOS 5 or older versions? Specifically, should I continue using the release/retain of data, or should I ignore that? Does it matter?
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JavaFX and OpenJDK
...s a modular library accessed from an existing JDK (such as an Open JDK installation).
The open source code repository for JavaFX is at https://github.com/openjdk/jfx.
At the source location linked, you can find license files for open JavaFX (currently this license matches the license for OpenJDK...
Finding all cycles in a directed graph
How can I find (iterate over) ALL the cycles in a directed graph from/to a given node?
17 Answers
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How can I use Timer (formerly NSTimer) in Swift?
...syntax (iOS 10+)
let timer = Timer(timeInterval: 0.4, repeats: true) { _ in print("Done!") }
// Swift >=3 selector syntax
let timer = Timer.scheduledTimer(timeInterval: 0.4, target: self, selector: #selector(self.update), userInfo: nil, repeats: true)
// Swift 2.2 selector syntax
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Why git keeps showing my changes when I switch branches (modified,added, deleted files) no matter if
... history of the repository. It simply places them into a staging area (the index); git commit then uses the contents of that staging area to create commits.
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What is the difference between customErrors and httpErrors?
...page extension register with ISAPI dll (.aspx, ashx, .asmx, .svc etc) like index.aspx then IIS pick up setting from customeErrors section else it pick up setting from httpErrors (IIS 7 hosted mode must be set as integrated mood not classic)
below are the examples that is for 404 error handling chec...
Is it possible to install iOS 6 SDK on Xcode 5?
Xcode 5 has a preferences pane that allow one to download iPhone 6.1 simulator, however I can't find a place where it allows downloading of iOS 6 SDK, thus it is not possible to set the active SDK to iOS 6 when developing with Xcode 5. Is there a workaround that would allow Xcode 5 to install iOS 6 ...
Best way to serialize an NSData into a hexadeximal string
...rsion.h
#import <Foundation/Foundation.h>
@interface NSData (NSData_Conversion)
#pragma mark - String Conversion
- (NSString *)hexadecimalString;
@end
NSData+Conversion.m
#import "NSData+Conversion.h"
@implementation NSData (NSData_Conversion)
#pragma mark - String Conversion
- (NSStr...
Struct like objects in Java
...ck such methods in your tests. If you create a new class you might not see all possible actions. It's like defensive programming - someday getters and setters may be helpful, and it doesn't cost a lot to create/use them. So they are sometimes useful.
In practice, most fields have simple getters and...