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• loops and array help

  - by dalton

  public void arrayCalculation(int[][]scores,float[]averages, int[]temp) { int total; for(int a=0; a<5; a++) { for (int b=0; b<5; b++) { scores[a][b] = temp[a+b*5]; } } for(int a = 0; a <5; a++) { total = total + scores[a]; } scores[5][0] = total; } i need to add up the values stored in the first row and store it in the 6th positon in the row

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• PHP calling PostgreSQL function - type issue?

  - by CitrusTree

  I have a function in PostgreSQL / plpgsql with the following signature: CREATE OR REPLACE FUNCTION user_login(TEXT, TEXT) RETURNS SETOF _get_session AS $$ ... $$ Where _get_session is a view. The function works fine when calling it from phpPgAdmin, however whan I call it from PHP I get the following error: Warning: pg_query() [function.pg-query]: Query failed: ERROR: type "session_ids" does not exist CONTEXT: compile of PL/pgSQL function "user_login" near line 2 in /home/sites/blah.com/index.php on line 69 The DECLARE section of the function contains the following variables: oldSessionId session_ids := $1; newSessionId session_ids := $2; The domain session_ids DOES exist, and other functions which use the same domain work when called from the same script. The PHP is as follows: $query = "SELECT * FROM $dbschema.user_login('$session_old'::TEXT, '$session'::TEXT)"; $result = pg_query($login, $query); I have also tried this using ::session_ids in place of ::TEXT when calling the function, however I recieve the same error. Help :o(

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• Computationally simple Pseudo-Gaussian Distribution with varying mean and standard deviation?

  - by mstksg

  This picture from wikipedia has a nice example of the sort of functions I'd ideally like to generate http://en.wikipedia.org/wiki/File:Normal_Distribution_PDF.svg Right now I'm using the Irwin-Hall Distribution, which is more or less a Polynomial approximation of the Gaussian distribution...basically, you use uniform random number generator and iterate it x times, and take the average. The more iterations, the more like a Gaussian Distribution it is. It's pretty nice; however I'd like to be able to have one where I can vary the mean. For example, let's say I wanted a number between the range 0 and 10, but around 7. Like, the mean (if I repeated this function multiple times) would turn out to be 7, but the actual range is 0-10. Is there one I should look up, or should I work on doing some fancy maths with standard Gaussian Distributions?

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• Multi-part gzip file random access (in Java)

  - by toluju

  This may fall in the realm of "not really feasible" or "not really worth the effort" but here goes. I'm trying to randomly access records stored inside a multi-part gzip file. Specifically, the files I'm interested in are compressed Heretrix Arc files. (In case you aren't familiar with multi-part gzip files, the gzip spec allows multiple gzip streams to be concatenated in a single gzip file. They do not share any dictionary information, it is simple binary appending.) I'm thinking it should be possible to do this by seeking to a certain offset within the file, then scan for the gzip magic header bytes (i.e. 0x1f8b, as per the RFC), and attempt to read the gzip stream from the following bytes. The problem with this approach is that those same bytes can appear inside the actual data as well, so seeking for those bytes can lead to an invalid position to start reading a gzip stream from. Is there a better way to handle random access, given that the record offsets aren't known a priori?

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• touches event handler for UIImageView

  - by madmik3

  I am just getting stated with iPhone development and can't seem to find the answer I am looking for what I want to do. It seems like I should be able to programmatically create a UIImageView and then set up an event handler for it's touch functions. in c# i would have something that looks like Button b = new Button(); b.Click+= my handler code right now I have this CGRect myImageRect = CGRectMake(0.0f, 0.0f, 141.0f, 151.0f); UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect]; myImage.userInteractionEnabled = YES; [myImage setImage:[UIImage imageNamed:@"myImage.png"]]; myImage.opaque = YES; // explicitly opaque for performance [self.view addSubview:myImage]; [myImage release]; What do I need to do to override the touch events? thanks

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• Assembly stack persistency

  - by user246100

  Hello. I would like to know if after calling functions the data I have in the stack is persistent. Like, I would like to know if (assuming cdecl convention) can I do this (independently of function X and independently of optimizations): push 1 push 2 push 3 call X call X call X add 12 esp ? Also, let's say that before the calls I save the address of where the pushed values are in a global variable. Can I, inside X, alter the values it contain by acessing the global variable? Like, for some reason I want that in X I'm able to alter the values in stack so that the second and third call to X receive different values.

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• PList Chicken/Egg Scenario

  - by David van Dugteren

  Hi, I want to read/write to cache.plist If I want to read an existing premade plist file stored in the resources folder I can go: path = [[NSBundle mainBundle] bundlePath]; NSString *finalPath = [path stringByAppendingPathWithComponent@"cache.plist"]; NSMutableDictionary *root = ... But then I wish to read it from the iPhone. Can't, the Resources folder is only readable. So I need to use: NSDocumentDirectory, NSUserDomain,YES So how can I have my plist file preinstalled to the Document Directory location? Thus meaning I don't have to mess around with untidy code copying the plist file over at startup. (Unless that's the only way).

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• Download a file from one ASP.NET web application to other (given the credentials)

  - by Tom S.

  Hi everybody! Im working on a asp.net 3.5 web application (C#), where i have a file with some information that is updated frequently, and only few accounts can access to it (the application is using the asp.net authentication system, stored in a SQL database). My task is to parse that file, so i made a small parser (another web app) a to show the information in a more friendly way. However, everytime i want to parse it, i need to enter in the application with one of those accounts, download the file, put in the parser's folder. Is there any way to, given the username and password, download the file directly from the parser application and use that one? Thanks in advance

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• how to convert string to double with proper cultureinfo

  - by Vinay Pandey

  Hi All, I have two nvarchar fields in database to store the DataType and DefaultValue, I have a DataType Double and value as 65.89875 in english format. Now I want the user to see the value as per the selected browser language format (65.89875 in English should be displayed as 65,89875 in german). Now if the user edits from german format to 65,89875 which is 65.89875 equivalent in english, and the other user views from english browser it comes as 6589875. This happens because in DB it was stored as 65,89875 and when converted using english culture it becomes 6589875 since it considers , as seperator. Any Idea how I get this working for all the browsers?

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• Improving the speed of php

  - by cast01

  I'm currently working on a website in PHP, and I'm wondering what the best practices/methods are to reduce the time requests take. I've build the site in a modular way, so a page would consist of a number of modules, and each of these would need to request information. For example, I have a cart module, that (if a cart is set) will fetch the cart with the id (stored in a session variable) from the database and return its contents. I have another module that lists categories and this needs to fetch the categories from the database. My system is built with models, and each model might also make a request, for example a category model will make a request to get products in that category.

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• How to preserve hyperlink when submitting via php form into MySQL

  - by TheTub

  Hi All, I've created a form that stores free text fields into a MySQL database. All works fine and the data is displayed back as intended when viewed. Except for one niggle. In an attempt to prevent malicious attacks I have used mysql_real_escape_string to remove any unwanted code from the input. However, I need to be able to preserve hyperlinks and basic html. For example, I want to store the following: <p align="left">Please follow this <a href="link.html">link</a></p> But the link is being stored as \"link.html\" as the quotes are being escaped. How can I preserve this link and other html? Many thank TT

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• reorder NSArray in objective-c

  - by Jonathan

  I have an NSArray of JSON file locations. There are stored in the user's/app's Document directory and inside each JSON file is a name value. I'm able to retreive the data from JSON files, I don't need help with tht. But I need help on sorting NSArrays I have no idea how I can do that based on a value inside the file, while not being pathetically slow. This is on the iPhone btw. In sum how do I customly reorder NSArrays.

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• Simple non-network concurrency with Twisted

  - by Rince

  Dear pythoners, I have a problem with using Twisted for simple concurrency in python. The problem is - I don't know how to do it and all online resources are about Twisted networking abilities. So I am turning to SO-gurus for some guidance. Python 2.5 is used. Simplified version of my problem runs as follows: A bunch of scientific data A function that munches on the data and creates output ??? < here enters concurrency, it takes chunks of data from 1 and feeds it to 2 Output from 3 is joined and stored My guess is that Twisted reactor can do the number three job. But how? Thanks a lot for any help and suggestions.

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• Hash 32bit int to 16bit int?

  - by dkamins

  What are some simple ways to hash a 32-bit integer (e.g. IP address, e.g. Unix time_t, etc.) down to a 16-bit integer? E.g. hash_32b_to_16b(0x12345678) might return 0xABCD. Let's start with this as a horrible but functional example solution: function hash_32b_to_16b(val32b) { return val32b % 0xffff; } Question is specifically about JavaScript, but feel free to add any language-neutral solutions, preferably without using library functions. Simple = good. Wacky+obfuscated = amusing.

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• PHP check if file exists on my server, based on a full URL

  - by stef

  I have an app that generates invoices in the form of PDF files stored in a directory on my server. Before mailing out this invoices I'd like to make sure that the URL (not server path) which I store in my DB does indeed point to a valid PDF file. Something could have gone wrong that wrote a value to that field in the db, but for example the filename is missing; meaning the file is not in the specified directory. AFAIK file_exists just checks server paths but not URL's. I could always store the server path too, or assemble it, but I'm wondering if i can do this check based on a full http url ending with a filename? EDIT: yeah CURL occurred to me too but doesn't that seem a bit heavy for such a simple task? Perhaps I should just store the server path too.

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• Complex SQL query... 3 tables and need the most popular in the last 24 hours using timestamps!

  - by Stefan

  Hey guys, I have 3 tables with a column in each which relates to one ID per row. I am looking for an sql statement query which will check all 3 tables for any rows in the last 24 hours (86400 seconds) i have stored timestamps in each tables under column time. After I get this query I will be able to do the next step which is to then check to see how many of the ID's a reoccurring so I can then sort by most popular in the array and limit it to the top 5... Any ideas welcome! :) Thanks in advanced. Stefan

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• SQL Overlapping and Multi-Column Indexes

  - by durilai

  I am attempting to tune some stored procedures and have a question on indexes. I have used the tuning advisor and they recommended two indexes, both for the same table. The issue is one index is for one column and the other is for multiple columns, of which it includes the same column from the first. My question is why and what is the difference? CREATE NONCLUSTERED INDEX [_dta_index_Table1_5_2079723603__K23_K17_K13_K12_K2_K10_K22_K14_K19_K20_K9_K11_5_6_7_15_18] ON [dbo].[Table1] ( [EfctvEndDate] ASC, [StuLangCodeKey] ASC, [StuBirCntryCodeKey] ASC, [StuBirStOrProvncCodeKey] ASC, [StuKey] ASC, [GndrCodeKey] ASC, [EfctvStartDate] ASC, [StuHspncEnctyIndctr] ASC, [StuEnctyMsngIndctr] ASC, [StuRaceMsngIndctr] ASC, [StuBirDate] ASC, [StuBirCityName] ASC ) INCLUDE ( [StuFstNameLgl], [StuLastOrSrnmLgl], [StuMdlNameLgl], [StuIneligSnorImgrntIndctr], [StuExpctdGrdtngClYear] ) WITH (SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF) ON [PRIMARY] go CREATE NONCLUSTERED INDEX [_dta_index_Table1_5_2079723603__K23] ON [dbo].[Table1] ( [EfctvEndDate] ASC )WITH (SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF) ON [PRIMARY]

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• postgresql weighted average?

  - by milovanderlinden

  say I have a postgresql table with the following values: id | value ---------- 1 | 4 2 | 8 3 | 100 4 | 5 5 | 7 If I use postgresql to calculate the average, it gives me an average of 24.8 because the high value of 100 has great impact on the calculation. While in fact I would like to find an average somewhere around 6 and eliminate the extreme(s). I am looking for a way to eliminate extremes and want to do this "statistically correct". The extreme's cannot be fixed. I cannot say; If a value is over X, it has to be eliminated. I have been bending my head on the postgresql aggregate functions but cannot put my finger on what is right for me to use. Any suggestions?

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• Formatting a barcode with hyphens in between - Assignment question

  - by capex

  Hi, The assignment at my first year uni computing course says my program should read a barcode number, and then display the same 13 digit barcode number separated by hyphens. For example, 9300675016902 should look like 930-067501-690-1. The restrictions say I can't use the following: No arrays No strings No functions. Any directions on this? (So far I have done this: part1 = barcode/10000000000; which gives me the first three digits, and this: part4 = barcode%10; which gives me the last digit. Thanks in advance!

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• Retrieving accessors in IronRuby

  - by rsteckly

  I'm trying to figure out how to retrieve the value stored in the Person class. The problem is just that after I define an instance of the Person class, I don't know how to retrieve it within the IronRuby code because the instance name is in the .NET part. /*class Person attr_accessor :name def initialize(strname) self.name=strname end end*/ //We start the DLR, in this case starting the Ruby version ScriptEngine engine = IronRuby.Ruby.CreateEngine(); ScriptScope scope = engine.ExecuteFile("c:\\Users\\ron\\RubymineProjects\\untitled\\person.rb"); //We get the class type object person = engine.Runtime.Globals.GetVariable("Person"); //We create an instance object marcy = engine.Operations.CreateInstance(person, "marcy");

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• What is the best way when creating a Google Widget, to store the data for the Widget to be shared by

  - by Tim McJilton

  I know this may end up getting closed quickly. I could not find this in my searching through APIs. And this is probably a very simple question but here we go... How do you store data on a google application you create in which you and others in a specific group or more specifically the people who can edit a specific calendar, can reach this data? Person A,B,C have read/write access to a calendar, and lets say they want to co-ordinate information. I want this information to not be accessible to modify by all 3 though it is not stored in a calendar? (Though I thought about just creating an event in 1900 and then that fullfills that, but at the same time is a very hack way to do it) I would appreciate any insight you can give me when it comes to data handling in google applications, I am very new to it, but have been looking into it.

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• What might cause SQL error Cannot find the object "dbo.InspectionEvents" because it does not exist o

  - by mrtrombone

  Hi My ASP.Net app is periodically getting the error 'Cannot find the object dbo."XXXX" because it does not exist or you do not have permissions' when it tries to execute a specific stored procedure that writes to the database. I have seen a few forum posts about this issue but the strange thing is that the method works fine almost all of the time, just every now and then I see it in my error logs. Can anyone tell me why this might works Ok most of the time but occassionally fire the error? Application is C# using Enterprise Library 4.1 Data Access. Database is SQL Server 2005 Cheers

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• How to edit localized forms all at one time in Visual Studio

  - by SoMoS

  Hello, I have several forms that are localized to multiple languages. If I do a change on one form (for example, changing the size of a textbox) the change is done only on the localized version of the Form that I have currently selected. Is there a way of extending the change I've done the different localized versions of the same Form to avoid having to go one by one doing the same change by hand? Thanks in advance for your help. EDIT: I'm talking about different forms when the real thign is that you have one form and several resources. The point is that at the end is just like if you have different forms for each locale because the form is built with the data from the resource. The problem is still the same because the edits done on the form are stored at one resource file and I have to put by hand those edits in all the resources.

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• Getting help on MATLAB's com.mathworks internals

  - by Richie Cotton

  It is possible to access bits of MATLAB's internal java code to programmatically change MATLAB itself. For example, you can programmatically open a document in the editor using editorServices = com.mathworks.mlservices.MLEditorServices; editorServices.newDocument() %older versions of MATLAB seem to use new() You can see the method signatures (but not what they do) using viewmethods. viewmethods(com.mathworks.mlservices.MLEditorServices) I have a few related questions about using these Java methods. Firstly, is there any documentation on these things (either from the Mathworks or otherwise)? Secondly, how do you find out what methods are available? The ones I've come across appear to be contained in JAR files in matlabroot\java\jar, but I'm not sure what the best way to inspect a JAR file is. Thirdly, are there functions for inspecting the classes, other than viewmethods? Finally, are there any really useful methods that anyone has found?

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• PHP variable passed to JasperServer for reports

  - by Ronedog

  Is it possible to pass a variable from php to a report in JasperServer? For example, in my php application I keep the department_id stored in a session variable. I would like to pass the department_id over to my reports running on JasperServer and display the information appropriate for that department. in the iReport I have a query like: "SELECT * FROM employees WHERE department_id = $P{dept_id_from_php}", but I have to build a dropdown select list to pass the dept_id parameter. The end result is I would like the user logged into my PHP application to view the employee information that is related to the department the logged-in-user belongs to. I don't want to pass this over using the querystring because the user could just change the id in the querystring and have access to other departments information. Ideally I would like to only pass that parameter once, then reuse it in all the reports, like a global variable. Is this possible?

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