Posts in 2021
-
Most votes on java questions 2
May 01, 2021 in FAQ
Most votes on java questions 2. #11 Why is char[] preferred over String for passwords? #12 How do I efficiently iterate over each entry in a Java Map? #13 Iterate through a HashMap #14 How can I create a memory leak in Java? #15 What is the difference between public, protected, package-private and private in Java? #16 When to use LinkedList over ArrayList in Java? #17 How do I convert a String to an int in Java? #18 What is a serialVersionUID and why should I use it? #19 Initialization of an ArrayList in one line #20 How do I test a private function or a class that has private methods, fields or inner classes?
Read all the top votes questions and answers in a single page. #11: Why is char[] preferred over String for passwords? (Score: 3579) Created: 2012-01-16 Last updated: 2017-01-13 Tags: java, string, security, passwords, char In Swing, the password …
-
Most votes on java questions 10
May 01, 2021 in FAQ
Most votes on java questions 10. #91 Static Classes In Java #92 Why doesn't RecyclerView have onItemClickListener()? #93 Can't start Eclipse - Java was started but returned exit code=13 #94 StringBuilder vs String concatenation in toString() in Java #95 Java 8 List<V> into Map<K, V> #96 What is the difference between JDK and JRE? #97 How to resolve java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException #98 Reading a plain text file in Java #99 When to use static methods #100 How to set or change the default Java (JDK) version on macOS?
Read all the top votes questions and answers in a single page. #91: Static Classes In Java (Score: 1005) Created: 2011-09-20 Last updated: 2016-10-22 Tags: java, static-classes Is there anything like static class in java? What is the meaning of such …
-
Most votes on java questions 1
May 01, 2021 in FAQ
Most votes on java questions 1. #1 Why is processing a sorted array faster than processing an unsorted array? #2 Why Is Subtracting These Two Times (in 1927) Giving A Strange Result? #3 Is Java "pass-by-reference" or "pass-by-value"? #4 How do I read / convert an InputStream into a String in Java? #5 Avoiding NullPointerException in Java #6 What are the differences between a HashMap and a Hashtable in Java? #7 Create ArrayList from array #8 Proper use cases for Android UserManager.isUserAGoat()? #9 Why don't Java's +=, -=, *=, /= compound assignment operators require casting? #10 How do I generate random integers within a specific range in Java?
Read all the top votes questions and answers in a single page. #1: Why is processing a sorted array faster than processing an unsorted array? (Score: 25473) Created: 2012-06-27 Last updated: 2021-04-15 Tags: java, c++, performance, cpu-architecture, …
-
Most votes on ios questions 9
May 01, 2021 in FAQ
Most votes on ios questions 9. #81 How to determine the current iPhone/device model? #82 How do I get the App version and build number using Swift? #83 How do I load an HTTP URL with App Transport Security enabled in iOS 9? #84 Close iOS Keyboard by touching anywhere using Swift #85 @import vs #import - iOS 7 #86 Status bar and navigation bar appear over my view's bounds in iOS 7 #87 Getting current device language in iOS? #88 Symbolicating iPhone App Crash Reports #89 Array state will be cached in iOS 12 Safari. Is it a bug or feature?
Read all the top votes questions and answers in a single page. #81: How to determine the current iPhone/device model? (Score: 447) Created: 2014-09-25 Last updated: 2017-09-22 Tags: ios, iphone, swift, device Is there a way to get the device model …
-
Most votes on ios questions 8
May 01, 2021 in FAQ
Most votes on ios questions 8. #71 NSOperation vs Grand Central Dispatch #72 Detect if device is iOS #73 How to set cornerRadius for only top-left and top-right corner of a UIView? #74 This certificate has an invalid issuer Apple Push Services #75 Is it possible to disable the network in iOS Simulator? #76 How do you beta test an iphone app? #77 Loading/Downloading image from URL on Swift #78 Capture iOS Simulator video for App Preview #79 What does the "__block" keyword mean? #80 Multiple lines of text in UILabel
Read all the top votes questions and answers in a single page. #71: NSOperation vs Grand Central Dispatch (Score: 473) Created: 2012-04-29 Tags: ios, concurrency, grand-central-dispatch, nsoperation, nsoperationqueue I’m learning about …
-
Most votes on ios questions 7
May 01, 2021 in FAQ
Most votes on ios questions 7. #61 Codesign error: Provisioning profile cannot be found after deleting expired profile #62 UIDevice uniqueIdentifier deprecated - What to do now? #63 How to add constraints programmatically using Swift #64 How to develop or migrate apps for iPhone 5 screen resolution? #65 How to navigate through textfields (Next / Done Buttons) #66 Take screenshots in the iOS simulator #67 "Agreeing to the Xcode/iOS license requires admin privileges, please re-run as root via sudo." when using GCC #68 Set the maximum character length of a UITextField #69 iOS - Dismiss keyboard when touching outside of UITextField #70 How to hide UINavigationBar 1px bottom line
Read all the top votes questions and answers in a single page. #61: Codesign error: Provisioning profile cannot be found after deleting expired profile (Score: 503) Created: 2009-11-19 Last updated: 2019-05-01 Tags: ios, xcode, provisioning-profile, …
-
Most votes on ios questions 6
May 01, 2021 in FAQ
Most votes on ios questions 6. #51 Should IBOutlets be strong or weak under ARC? #52 How can I create a UIColor from a hex string? #53 UIScrollView Scrollable Content Size Ambiguity #54 The resource could not be loaded because the App Transport Security policy requires the use of a secure connection #55 How do I size a UITextView to its content? #56 Starting iPhone app development in Linux? #57 How to programmatically send SMS on the iPhone? #58 How to get the screen width and height in iOS? #59 How to lose margin/padding in UITextView? #60 How would I create a UIAlertView in Swift?
Read all the top votes questions and answers in a single page. #51: Should IBOutlets be strong or weak under ARC? (Score: 559) Created: 2011-10-06 Last updated: 2015-08-28 Tags: ios, objective-c, cocoa-touch, interface-builder, automatic-ref-counting …
-
Most votes on ios questions 5
May 01, 2021 in FAQ
Most votes on ios questions 5. #41 What does the NS prefix mean? #42 UITextField text change event #43 What are Unwind segues for and how do you use them? #44 How to tell if UIViewController's view is visible #45 Giving UIView rounded corners #46 iPhone UITextField - Change placeholder text color #47 UITableViewCell, show delete button on swipe #48 Convert UTF-8 encoded NSData to NSString #49 In Objective-C, how do I test the object type? #50 Presenting modal in iOS 13 fullscreen
Read all the top votes questions and answers in a single page. #41: What does the NS prefix mean? (Score: 605) Created: 2009-01-23 Last updated: 2020-12-14 Tags: ios, objective-c, cocoa, cocoa-touch, terminology Many classes in Cocoa/Cocoa Touch have …
-
Most votes on ios questions 4
May 01, 2021 in FAQ
Most votes on ios questions 4. #31 Xcode 6: Keyboard does not show up in simulator #32 This action could not be completed. Try Again (-22421) #33 Version vs build in Xcode #34 iOS 8 UITableView separator inset 0 not working #35 How do I test if a string is empty in Objective-C? #36 Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7 #37 Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy #38 Xcode 6 Bug: Unknown class in Interface Builder file #39 Send and receive messages through NSNotificationCenter in Objective-C? #40 iOS app with framework crashed on device, dyld: Library not loaded, Xcode 6 Beta
Read all the top votes questions and answers in a single page. #31: Xcode 6: Keyboard does not show up in simulator (Score: 715) Created: 2014-06-26 Last updated: 2017-11-02 Tags: ios, keyboard, ios-simulator The keyboard does not show up when I run …
-
Most votes on ios questions 3
May 01, 2021 in FAQ
Most votes on ios questions 3. #21 Xcode 7 error: "Missing iOS Distribution signing identity for …" #22 Can I embed a custom font in an iPhone application? #23 Xcode process launch failed: Security #24 Loaded nib but the 'view' outlet was not set #25 How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:? #26 How do I create delegates in Objective-C? #27 Eliminate extra separators below UITableView #28 Placeholder in UITextView #29 How to link to apps on the app store #30 Hide strange unwanted Xcode logs
Read all the top votes questions and answers in a single page. #21: Xcode 7 error: "Missing iOS Distribution signing identity for …" (Score: 841) Created: 2015-09-28 Last updated: 2016-10-25 Tags: ios, xcode, app-store-connect, …