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In a large Application is there any way to distinguish user-defined classes with built-in classes?

Hi. In a large Application is there any way to distinguish user-defined classes with built-in classes without checking ? ...

Is there a more efficient way to reconcile large data sets?

I've been tasked with reconciling two big data sets (two big lists of transactions). Basically i extract the relevant fields from the two data sources into two files of the same format, then compare the files to find any records that are in A but not in B, or vice versa, and report on them. I wrote a blog entry on my best efforts achievi...

Does an .exe file size affect if its icon is shown?

Hello, I have a large cluster of files that I'm trying to pack into a single self-extracting executable and have so far been able to accomplish this with both Installshield 10.5 and Winzip Self-Extractor 4.0, however I cannot get the icon to appear for the final .exe file (right now, windows default white window/blue title icon is being...

Strategies for writing expanding ordered files to disk

I an a graduate student of nuclear physics currently working on a data analysis program. The data consists of billions of multidimensional points. Anyways I am using space filling curves to map the multiple dimensions to a single dimension and I am using a B+ tree to index the pages of data. Each page will have some constant maximum num...

BATCH Windows: 30 minutes.

Hello, I want to do something: i have a LARGE batch file, but this is what i want to apply to HOLE the batch: After 30 Minutes, it should display a message. How is this possible, and can i set this to the hole batch. I kinda have a lot of stuff in it. ...

Dealing with Gigabytes of Data

I am going to start on with a new project. I need to deal with hundred gigs of data in a .NET application. It is very early stage now to give much detail about this project. Some overview is follows: Lots of writes and Lots of reads on same tables, very realtime Scaling is very important as the client insists expansion of database serv...

Navigating effectively through source code in Linux

Hello all, I was wondering how people usually navigate through large projects with several source files in Linux environment. I primarily work with C and python and sometimes with C++, C# and Java. I wanted to know specific editors, plugins etc. I used to program on windows so editors like vi and emacs are not really in my league, bu...

Can you link your C++ project's dependencies using their .objs (and make a single dll)?

Hello, I have a C++/CLI project in VS 2008 that has a direct dependency on a native C++ library that, in turn, has four additional native C and C++ library dependencies; some of these dependent projects rely on each other as well. I have source code for all of the libraries and can build them all successfully as separate libraries, but ...

MySQL ALTER TABLE on very large table - is it safe to run it?

I have a MySQL database with one particular MyISAM table of above 4 million rows. I update this table about once a week with about 2000 new rows. After updating, I then perform the following statement: ALTER TABLE x ORDER BY PK DESC i.e. I order the table in question by the primary key field in descending order. This has not given me a...

Best way of storing very large number of objects in memory?

Very simple question, what would be your way of storing 100 KB - 2 MB objects in memory? Object is made of 3 doubles and two strings (both mostly under 5 chars long). Would using struct instead of class be any better? EDIT: I don't know why I said double, it is float .. :S ...

Which tool to use for drawing large scatterplots

For drawing Scatter plots of >100K points, Excel 2007/10 hangs under repeated refresh. What is a better tools for such tasks. I have 4 GB ram etc on this machine. ...

OpenGL ES. Scrolling 3 layer starfield textures gets me from 60 -> 40 FPS

I need to draw the background for a 2D space scrolling shooter. I need to implement 3 layers of stars: one distant nebula (moving really slow) in the background, one layer of far away stars (moving slow) and one layer of close stars (moving normal) on top of the other two. The way i first tried this was using 3 textures of 320 x 480 tha...

Loading and analyzing massive amounts of data

So for some research work, I need to analyze a ton of raw movement data (currently almost a gig of data, and growing) and spit out quantitative information and plots. I wrote most of it using Groovy (with JFreeChart for charting) and when performance became an issue, I rewrote the core parts in Java. The problem is that analysis and pl...

Store large lists of data in iPhone app so they are available to the UI

Hi A bit cryptic, which is also what drives me to start a thread in here, I simply can't find the words to Google the challenge. Im building an app that will have 2 search views that displays 1400 and 16000 possible choices. It is plain lists, no relational or otherwise spanning data. As far as I can figure out I have 3 possibilities:...

Unable to create snapshot of Canvas

Hi, In my application a canvas object have height=90 px & width =86400 px (indicating 24 hrs 1sex/pixel). The canvas is scrollable and User can add delete components in that. Now, i want to have snapshot of whole canvas & shrink it to size 910x30 to draw taken snapshot in another canvas. Can anybody tell me how to take snapshot of suc...

Ajax large screen refresh

Hi Guys,, I have an Ajax page where a chart and a graph are displayed on the page, say 50% of the page is updated. When the next request is sent off the chart and graph are redrawn and I am unable to find a way to make this look professional, especially on slower computers. I am using Fusion Charts for the chart, Ajax and jQuery. Any...

Who judges and keeps the quality of the code within a team of programmers?

Hi, Even there are some coding conventions in a software development team, if there are more than 7-8 people coding on the same solution, who or what mechanism assures the standardizing and keeping the quality of the code? How do they handle this in large projects, so that when a new programmer joins the team won't feel like Alice in ...

Storing and accessing large amounts of data

Hello, My application creates pieces of data that, in xml, would look like this: <resource url="someurl"> <term> <name>somename</name> <frequency>somenumber</frequency> </term> ... ... ... </resource> This is how I'm storing these "resources" now. A resource per XML file. As many "term" per "resource" a...

create image cache - large png images

Hi all I am a first time poster. I have a problem that seems very common to a lot of people but I can't seem to find or decipher an answer anywhere. The game I'm making has 3 rather large sprites on screen (230 high) x various widths. Each sprite has 3 1024x1024 character sheets where the frames of animations are taken from. I've ex...

SQL SSRS very large extract

Hi I support some very large databases (approaching a terabyte). We currently have an in-house reporting solution, but are investigating the use of SSRS (SQL Reporting Services). However our users sometimes need to extract large volumes of data (many millions of records), which may take a few hours to retrieve. What is an advisable app...