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Fundamental difference between Hashing and Encryption algorithms
...from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point is that there's a one-way mapping going on. It's always a many:1 mapping (meaning there will always be collisions) since every function produces a smaller output than it's capable of inputting...
What is an efficient way to implement a singleton pattern in Java? [closed]
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edited May 15 '15 at 9:23
gvlasov
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Detecting when the 'back' button is pressed on a navbar
...mplementing a Container View Controller" for further details.
Since iOS 5 I've found that the easiest way of dealing with this situation is using the new method - (BOOL)isMovingFromParentViewController:
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
if (self....
How do I declare class-level properties in Objective-C?
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edited Jul 7 '15 at 11:23
Erik Aigner
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Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
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edited Mar 19 '17 at 11:35
answered Oct 27 '14 at 11:05
Mo...
How to initialize log4j properly?
...file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.la...
Object-orientation in C
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edited Sep 15 '17 at 18:56
answered Jan 6 '09 at 7:51
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case-insensitive list sorting, without lowercasing the result?
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John Kugelman
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answered Apr 22 '12 at 16:36
user25148user25148
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Is the C# static constructor thread safe?
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Wollmich
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answered Aug 10 '08 at 8:46
ZoobaZooba
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