Efficient Way To Get Number Than Using Distance Formula?
Dec 4, 2010
While learning to Orientate of the Last layers of a rubik's cube, I thought that it would be fun to make a vb.net application for it(I know that it's super hard to do)I'm starting around the center cube, but was wondering if I did a part right..I'm working with squares, and was wondering the length from one corner to another. [code] Trying to figure out the distance from the top left to bottom right,I used the distance formula to test it out and got 70.71067811865475 sqrt((-50-0)^2+(-50-0)^2)Is there an easier or more efficient way to get this number than using the distance formula?
View 2 Replies
ADVERTISEMENT
Dec 17, 2010
You could check to see if the distance across the form minus the distance across the picture box is equal to the horizontal location of the picture box to see if it's on the right side. For the left side, just check if the horizontal location of the picture box is 0.
View 2 Replies
Nov 27, 2011
If there is a formula to change a latitude and longitude into a single number? I plan to use this for a database table in software that provides routing for deliveries. The table row would have that number as well as the postal address. The database table would be sorted in ascending numeric order so the software can figure out which address the truck would need to go to first, second etc.
For example I would use the following numbers for the latitude and longitude:
Lat = 40.71412890
Long = -73.96140740
Additional Information: I'm developing an Android app using Basic4Android. Basic4Android uses a VB or VB.Net syntax with SQLite as the database. Part of this app will have route planning. I want to use this number as the first column in an SQLite table and the other columns will be for the address. If I do a query within the app that sorts the rows in numerical ascending order, I will be able to figure out which postal address are closest to each other so it will take less time for me to go from house to house.
For example, if the numbers were:
194580, 199300, 178221
I can go to postal address 178221 then to 194580 and finally to 199300 and I won't need to take the long way around town to do my deliveries after they were sorted. As an alternative, I would be happy if there was an easy way to call a web service that returns maybe a json response that has the single number if I send a postal address to the web site. Basic4Android does have http services that can send requests to a web site.
View 4 Replies
Mar 30, 2012
assuming i have an isoceles triangle, where i know the height + base width, how
can i calculate the width of that triangle at 1/3 of the distance from the point + 2/3 of the distance from the point?
i thought it'd be simply 1/3 base width + 2/3 base width, but my drawing is +/- a few pixels when i resize it?
View 4 Replies
Feb 20, 2009
I want to place two radio buttons in so I can select one of them to use one formula, and then select the other to use another formula. I want to use the I=P(1+r)^n formula and I=P(1-r)^n formula with the radio button text showing Appreciation and Depreciation.
Heres my copy of the original code.
Public Class Form1
Private Sub cmdExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdExit.Click
End
End Sub
[CODE].......................
View 5 Replies
Nov 4, 2010
It seems that when using With blocks in VB.NET, the resulting MSIL larger than w/o. So this leads me to ask, are With Blocks really more efficient? MSIL is what gets JITed into native machine code, so smaller code size should imply more efficient code, right?
[Code]...
View 5 Replies
May 4, 2010
Where to add this validation, or if there is a more efficient way of doing it and where to put it?
CODE:
View 6 Replies
Aug 9, 2009
How to use MVC Pattern efficient?
View 8 Replies
Jul 26, 2011
Is there a more efficient way of doing this code?
For Each row As DataRow In dt.Rows
Dim ts1 As String = row(0).ToString
For index As Integer = 1 To 9[code]....
View 2 Replies
Aug 26, 2011
just wondering which of these two sort methods would be more efficient movies.OrderBy(Function(m As Movie) m.Title)
[Code]...
View 1 Replies
Jan 5, 2010
I need to verify if a certain user exist on my asp.net site.I want to know if which of these two functions is more efficient, faster and better compared to each other and why.
[Code]...
View 6 Replies
Aug 1, 2009
I am working on an application that will need to read tons of records (close to 500,000) from one table and insert them into another set of tables in the same database. I though about using SSIS package for this but our DBAs don't want to use that. Now, I am thinking of a multi-threaded approach. I am thinking that I can have a few thread started that will read say (500) records at a time and insert them, then come back and read more.
Now, say I spawn off 3 threads of this application. The first thread reads 500 rows and starts processing them. Can I lock these rows that were already read so that the next thread does not pick them up? I am trying to find some articles regarding this on the internet, but perhaps I am not searching for the correct terms in Google.
View 6 Replies
Jul 1, 2010
I'd like to sample the data from the Arduino @ roughly 200Hz. Is there a more efficient way to do this than using a timer (which is what I am currently using)? Currently I am using[code]....
View 3 Replies
Nov 7, 2009
if there is no need for my variable to store negative values, is it more efficient to use UInteger instead of Integer? both are 4bytes and i've got a feeling unsigned works faster though i'm nt sure about it. note that the range of my variable is 0 to 2147483647, hence i could use a UInt32 or Int32 and both would give me the same result so i'm wondering about optimum performance.
View 7 Replies
Jun 22, 2010
I have been reading books trying to learn .net on my own. I am working on an exercise that asks me to create a 1MB file. what i have below does work, but it seems to me there would be a more efficeient way. It seems like what i am doing would cause a lot of overhead. making a 1MB file easier than what i have?[code]...
View 2 Replies
Jul 28, 2009
I have a program that must initialize a table that is usually about 10-15 thousand records. I have attempted several means to empty the records from it, but it always takes several minutes to accomplish the task or in some cases like a 'bindingsource.clear' command, doesn't work at all. I currently have it working using a simple loop to go through each record at a time and 'removecurrent'. but this seems extremely inefficient and it is quite slow.The real time consumer seems to come in with the tableadapter.update and tableadapter.fill that happens after the loop.[code]
View 6 Replies
Sep 17, 2009
From the below code i cant run the project how can i do[code]... ?
View 2 Replies
Apr 7, 2009
How i can calculate the distance between two coordinates[code]...
View 6 Replies
Mar 1, 2010
I've to do this application whose purpose is :The application computes the number of miles traveled given the speed limit and the number of hours to be traveled in one day.Restrictions: The number of hours for one day of travel should not exceed 20 hours.
Public Class frmDistanceTraveled
Private Sub btnCalculateDistance_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateDistance.Click
[code].....
View 15 Replies
Apr 21, 2009
I am working on an application where i need to get the road distance between 2 UK addresses.Currently im just using a web object that links to google maps so the user can find the distance themselves and then copy and paste the result into a textbox however i want a way for this to be done automatically
View 5 Replies
Apr 21, 2009
I am working on an application where i need to get the road distance between 2 UK addresses Currently im just using a web object that links to google maps so the user can find the distance themselves and then copy and paste the result into a textbox however i want a way for this to be done automatically
View 3 Replies
Jan 25, 2010
I've got a map of the country I reside in and have all the railroad stations marked out. i've got all the co ordinates for each station and distances from one station to another.My question is what would the best way be to get the shortest distance between two stations, keeping in mind that one station may run through many others and there is more than one way to get there. See pic attached
[Code]...
View 2 Replies
Jul 28, 2010
I've an arraylist having 30000 items in it, what's the best way of creating a text file on the fly from an ASP.NEt page? Currently I'm using the code below but it times out with large data,[code]
View 3 Replies
Mar 16, 2010
Let's say I've got: Dim los1 as New List(Of String) los1.Add("Some value")
Dim los2 as New List(Of String) los2.Add("More values")
What would be the most efficient way to combine the two into a single List(Of String)?
Edit: While I love the solutions everyone has provided, I probably should have also mentioned I'm stuck using the .NET 2.0 framework.
View 4 Replies
Nov 9, 2011
I am looping through my dataset to save my database, I thought this might not be the best way. Is there a more resource efficient of doing it?
For i As Integer = 0 To CO.Tables("CO_Del").Rows.Count - 1 'CO is my DataSet
dbCommand.Parameters.Clear()
AddInParameter(dbCommand, "@IsDelete", DbType.Boolean, 0, DBNull.Value)[code].......
View 3 Replies
Jan 15, 2010
I have a Page class and a PageCollection class in a 3d party ORM framework. I can fill the PageCollection based on parameters (pageid, parentid, url etc..) (SQL query). But I need the data multiple times around the ASP.NET MVC website (Sitemap, Authentication), so I chose to load all pages 1 time and reference that (global) collection.
GlobalClass.Pages //is PageCollection containing all pages
I have now created functions which return a temporary subcollection or single entity based on the parameters mentioned before (pageid, parentid, url etc..).
GlobalClass.Pages.GetByPageId(id) //returns single page entity
GlobalClass.Pages.GetByParentId(parentid) //returns subcollection
The site however got very slow.
cache the subcollections (GetByParent())? create internal hash-lookup tables for the collection? Something else...?
Namespace BLL
Public Class PageCollection
Inherits CustomCollectionBase
[Code]....
View 1 Replies
Jan 28, 2011
I have an ASP DataGrid and I'm applying sorting to it. Well, as I was looking at an example, they had a function similar in function, different in name, to[code]...
View 3 Replies
Jun 24, 2011
I'm trying to create an application that reads in a log file, then converts each line to a class(I'm databinding a datagrid to the finished ObservableCollection).The implementation I've done but I'm struggling to reduce the time it takes to itterate the lines and convert them to classes.small log files are fine its the larger log files (25k lines +) which is my concern. I'm wanting to do this with say a max delay of around 5secs from loading the text file.my current implemenation of a log file I have of size 85k lines is several minutes which isn't great.
[Code]...
View 3 Replies
Jan 24, 2011
We have some information that we need to write (about 18KB) to a .txt file stored in one of our network drives. The file is re-written about once every 15 minutes but is read practically at least every second. We are currently using StreamWriter to write file.The file server is in remote location and the round trip ping varies from <1ms to 15ms.
The problem is, sometimes it takes as long as 6 seconds to write the contents to the file, which is definitely way too long even after we take consideration of the network speed. therefore, I am just wondering if there is any efficient way to write the file using VB.Net to improve the performance? Java has a very good tool named BufferedOutputStream, which unfortunately is not available in VB.Net (or I just have not found it).
View 5 Replies
Mar 18, 2011
I've been using LINQ so much in the last couple of weeks that when I had to write a one line function to remove < and > from a string, I found that I had written it as a LINQ query: [code] My question is, is it better to do it with LINQ as above or with StringBuilder as I've always done, as below: [code] Both work, the second one is easier to read, but the first one is designed for executing queries against arrays and other enumerables.
View 2 Replies
