Hey! I am making a site that each account will have an ID. But, I didn't want to make it incrementable, meaning: id=1 id=2 ... id=1000 What I want is to have random IDs: id=2355 id=5647734 id=23532 ... (The reason is to avoid robots to check all accounts profiles by just incrementing a ID in URL - and maybe other reason, but that is...
Hi all i use some pictures in my 'MainForm' And My Windows Application was writing by c sharp. i use this form to start other forms in my project. And I use some label and panel with Transparent Color. but when the program started i see many blink in transparent label and panel. And it is very bad. How I Can Fix this problem? ...
Do linq generated queries get cached effectively by SQL Server 2008? or is it better to use stored procedures with linq or what about a view and then using compiled linq queries... opinions? cheers emphasis here is on "effectively", and or is it better.... ie. views are cached well by sql server, and then using linq on the view.... ...
I have a big data should be shown in a Table. I use javascript to fill the table instead of priting in HTML. Here is a sample data I use: var aUsersData = [[1, "John Smith", "...."],[...],.......]; the problem is that Firefox warns me that "There is a heavy script running, should i continue or stop?" I don't want my visitors see the...
Looking at this example of named pipes using Overlapped I/O from MSDN, I am wondering how scaleable it is? If you spin up a dozen clients and have them hit the server 10x/sec, with each batch of 10 being immediately after the other, before sleeping for a full second, it seems that eventually some of the instances of the client are starve...
I need to try a Neural Network on an interesting research problem I'm faced with. Any language is fine, although I suspect the best NN's are probably in C. I would like to be able to integrate with Java or PHP, but it's not 100% necessary. What is the best choice from the dozens of open-source NN frameworks out there? ...
Hi I wrote the following code, it works fine, but it takes like 3 sec to complete if the table is containing a million record. Is there a way to optimize the following code. DBCC DROPCLEANBUFFERS; DBCC FREEPROCCACHE; DECLARE @Page_Size int; DECLARE @Page_Number int; DECLARE @Lower_Bound int; DECLARE @Upper_Bound int; SET @Page_Size...
I need to measure the performance overhead of additional Javascript event bindings (using jQuery live), the overhead would probably increase CPU load and be very hard to notice from execution time profiling. How can I measure the CPU load differences between two different versions of a Javascript application? ...
I understand the security benefits of prepared statements in MySQL. No need to cover that topic here. I'm wondering about the performance aspect of them. Now, I know when a query using a prepared statement is executed twice in a single PHP script, it's faster because the query is only parsed once, once for each query. The client makes o...
A few days ago I was told that recent versions of g++ produce "better" x86 code than MSVC 2008. Basically GCC with full optimization produces faster applications than MSVC with full optimizations. While it's certainly correct to state that this, if true, depends a great deal on the application and the C++ code used (and I'm in the proce...
Possible Duplicate: Java vs C#: Are there any studies that compare their execution speed? Which one would be faster? I imagine C# since it's basically targeted only towards Windows. Assuming either one is faster, in practice, would that difference be noticeable, assuming the programs to be about the same and coded by people w...
Here is the context: I am writing an interpreter in C# for a small programming language called Heron, and it has some primitive list operations which can be executed in parallel. One of the biggest challenges I am facing is to distribute the work done by the evaluator across the different cores effectively whenever a parallelizable ope...
A few days back, while writing an answer for this question here on overflow I got a bit surprised by the C# compiler, who wasn’t doing what I expected it to do. Look at the following to code snippets: First: object[] array = new object[1]; for (int i = 0; i < 100000; i++) { ICollection<object> col = (ICollection<object>)array; ...
Hello, Sorry I have several question relative to the same problem. I am using Netbeans 6.8 on OSX 10.5.8 with java 1.6.0_17 and after about 5 minutes of work, the cpu usage of netbeans process (and java) are around 100%. It is often due to: - "go to declaration" command - completion command - more or less doing 2 or 3 basic actions suc...
Assume a database consisting of 1 GB of data and 1 GB of index data. To minimize disk IO and hence maximize performance I want to allocate memory to MySQL so that the entire dataset including indexes can be kept in RAM (assume that the machine has RAM in abundance). The InnoDB parameter innodb_buffer_pool_size is used to specify the si...
Hi, I have tested jconn2 and jconn3 on same application which is connected to sybase ase15.03 server . But I encountered the really big performance differences between these two api. For example I have run a simple select query on a big table (which contains 7051328 rows 20 cols). JCONN2 returns the resultset in 5.3sec but jconn3 retur...
What should be the ideal connection timeout in asp.net application? Does it prove to be a bottleneck in the performance of a application. Thanks in advance. ...
Hi, I was building a large web script with jquery. It does various things and one of them is interacting with the DOM elements. I used a simple JavaScript function function mymainclass() { // declared variables here this.var1 = new String // Some functions this.fn1 = function () { ... } } After that, I added other functions using th...
I have a bunch of image URLs. I have to download these images and display them in my application one-by-one. I am saving the images in a Collection using SoftReferences and also on Sdcard to avoid refetches and improve user experience. The problem is I dont know anything about the size of the bitmaps. And as it turns out, I am getting O...
So recently there has been a lot of emphasis by almost all platform providers to provide new tools/language constructs for better concurrency. And that is also one of the reasons why a lot of ideas from functional programming languages are being integrated into mainstream languages like C#, Java etc. Even though these make a lot of sens...