![Implementing GetHashCode [duplicate]](/skin/wt/img/t.gif)
Possible Duplicate: What is the best algorithm for an overridden System.Object.GetHashCode? What constitutes a good implementation of the GetHashCode method? I did some googling, and found some goodlines (MSDN) but it seems like the logic
I am still new to objective-c and am trying to figure out what this statement is doing exactly.[names allKeys] sortedArrayUsingSelector:@selector(compare:)];I know that allKeys is getting all the keys from my dictionary. I know that sortedA
In Dart's Web UI, it was possible to pass arbitrary data to function in response to events, for example, the following snippet passes the value 2 to the increment(int incBy) method in response to the button's on-click event: Cl
How does the performance of the following two query components compare?LOWER LIKE... LOWER(description) LIKE '%abcde%' ...iLIKE... description iLIKE '%abcde%' ... 1:According to my tests (ten of each query), LOWER LIKE is about 17% faste
IntroThe enum type in C++ is fairly basic; it basically just creates a bunch of compile-time values for labels (potentially with proper scoping with enum class).It's very attractive for grouping related compile-time constants together:enum
I think I found a bug in latest iOS 7 by running an app with Base SDK set to iOS 6.1 (possibly even lower versions too, haven't tested that out yet)I have this image in my photo library: http://i.imgur.com/7KUIGLt.jpgI present a UIImagePick
The iPad/iOS has video streaming support for e.g. H.264 using MPMoviePlayerController etc., but i receive H.264 data through a custom, proprietary, stream and need to decode it in a soft real-time scenario.Can the iPads/iOS' video decoder b
Is it possible to alias a column name and then use that in a CASE statement? For example,SELECT col1 as a, CASE WHEN a = 'test' THEN 'yes' END as value FROM table;I am trying to alias the column because actually my CASE statement would be g
As a way to learn RabbitMQ and python I'm working on a project that allows me to distribute h264 encodes between a number of computers. The basics are done, I have a daemon that runs on Linux or Mac that attaches to queue, accepts jobs and
I want to extend python and numpy by writing some modules in C or C++, using BLAS and LAPACK. I also want to be able to distribute the code as standalone C/C++ libraries. I would like this libraries to use both single and double precision f
I want to get a number of rows in my table using max(id). When it returns NULL - if there are no rows in the table - I want to return 0. And when there are rows I want to return max(id) + 1.My rows are being numbered from 0 and autoincrease
public static MySingleton getInstance() { if (_instance==null) { synchronized (MySingleton.class) { _instance = new MySingleton(); } } return _instance;} 1.is there a flaw with the above implementation of the getInstance method? 2.
I am using Apache on Ubuntu 14.02 and running php on the same.I have connected to a remote mssql server hence no need of mysql . I want to know how to connect to an email id registered with gmail in order to read the incoming emails . I hav
I'm looking for a batch or Powershell script to search for similar images on Google images using a local image as input.My research so farThe syntax for a image search using a URL rather than a local file is as followes:https://www.google.c
I've thought java erasure wipes generic types out in compile time however when i test it by myself i realized there are some information about generic types in Bytecode.here is my test :i wrote 2 classes:import java.util.*;public class Test
I'm developing a game for Android. It's got a lot going on but is running reasonably smoothly. That is, of course, until the user touches the screen.While they're touching it, onTouchEvent is called (with action = ACTION_MOVE, x = 0 and y =
Are there any mnemonics or patterns that make memorizing emacs key combos easier? 1:Well, the main important ones are: `C-k to "Kill" a line and C-y to "Yank" it back from the kill buffer (aka: clipboard). C-s to "Search "C-h for "Help"C
Here is an exercise (3-15) in the book "Algorithm Design Manual". Design a data structure that allows one to search, insert, and delete an integer X in O(1) time (i.e. , constant time, independent of the total number of integers stored). A
New Here. My knowledge level is hobbyist. My question will ultimately be related to this site:http://dbtest.net16.net/ethanol-01.htmlEDIT: View unencrypted page source code here >>> http://dbtest.net16.net/ethanol-22.htmlThis is an HTML f
I did following (I simplified this comparing to a reality):created a branch Branch1, switched to itadded file File1 and modified existing file File2 and commited thisfigured out that I don't need File1, removed it and commited thisSo, the a
I've been trying to set up PostgreSQL on my system (OSX 10.8, clean install), but I'm running into trouble with using psql, createdb, etc. I've tried various solutions and none seem to work.The install was successful, and I proceeded to fix
I have been given a CSV file with more than the MAX Excel can handle, and I really need to be able to see all the data. I understand and have tried the method of "splitting" it, but it doesnt work.Some background: The CSV file is an Excel C
Are there any advanced solutions for capturing a hand drawing (from a tablet, touch screen or iPad like device) on a web site in JavaScript, and storing it on server side?Essentially, this would be a simple mouse drawing canvas with the spe
I understand that both quick sort and merge sort need O(n) auxiliary space for the temporary sub-arrays that are constructed, and in-place quick sort requires O(log n) auxiliary space for the recursive stack frames. But for heap sort, it se
I heard that there was a public URL for all users on github where you can access their public keys or they can supply that URL of all their public keys. Is this true? If so what is that URL. Does it exist for bitbucket as well? 1:You can