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• Can the Sequence of RecordSets in a Multiple RecordSet ADO.Net resultset be determined, controlled?

  - by Shiva

  I am using code similar to this Support / KB article to return multiple recordsets to my C# program. But I don't want C# code to be dependant on the physical sequence of the recordsets returned, in order to do it's job. So my question is, "Is there a way to determine which set of records from a multiplerecordset resultset am I currently processing?" I know I could probably decipher this indirectly by looking for a unique column name or something per resultset, but I think/hope there is a better way. P.S. I am using Visual Studio 2008 Pro & SQL Server 2008 Express Edition.

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• Creating An OLEDB Connection From Excel To SQL

  - by Soo

  I am looking to run SQL queries using VBA code in an Excel file. It may sound like a bad way to do things, but the purpose of this is to support legacy functionality on a project I'm working on. I figured out how to create an ODBC connection, but it requires several steps which may be troublesome to implement on many computers, so I'm looking into the possibility of using OLEDB to get the job done. My question is how to go about setting things up so I can run SQL queries in Excel using VBA.

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• infix formula in the input

  - by gcc

  input: sqrt(2 - sin(3*A/B)^2.5) + 0.5*(C*~(D) + 3.11 +B) a b /*there are values for a,b,c,d */ c d input : sqrt(2 - asin(3*A/B)^2.5) +cos(0.5*(C*~(D)) + 3.11 +B) a b /*there are values for a,b,c,d */ c d input: sqrt(2 - sin(3*A/B)^2.5)/(0.5*(C*~(D)) + sin(3.11) +ln(B)) /*max lenght of formula is 250 characters*/ a b /*there are values for a,b,c,d */ c /*each variable with set of floating numbers*/ d As you can see infix formula in the input depends on user. My program will take a formula and n-tuples value. Then it calculate the results for each value of a,b,c and d. If you wonder I am saying ;outcome of program is graph. I dont know way how to store the formula so that I can do my job with easy. can you show me? a,b,c,d is letters cos,sin,sqrt,ln is function

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• Shell script variable problem

  - by user280288

  Hi all, I'm trying to write a shell script to automate a job for me. But i'm currently stuck. Here's the problem : I have a variable named var1 (a decreasing number from 25 to 0 and another variable named var${var1} and this equals to some string. then when i try to call var${var1} in anywhere in script via echo it fails. I have tried $[var$var1], ${var$var} and many others but everytime it fails and gives the value of var1 or says operand expected error. Thanks for your help

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• Writing code to be a better programmer

  - by wtfsven

  A while back I heard on a podcast about a site listing "10 applications to write that will make you a better programmer." I'm desperate to find where this is, or at the very least a decent list from someone here. The thing is, I've been writing code for about 8 years now, and it's my passion. Very few things make me happier than getting lost in some C# or Python. But I've spent the last 2 years in a job that doesn't allow me much time to do what I love. Now everyone knows that the best way to keep your coding sword sharp is to use it, and I've noticed recently that mine is getting dull. Does anyone have any suggestions on some simple programs to help flex my coding muscle? I'm one of those odd few who actually likes writing CRUD applications, so stuff like that would be nice, too.

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• What is the best to format messages for queueing?

  - by Tijmen

  I've been reading up on message queueing lately, and I'd like to implement a simple, extendable, system for my app. While there's a lot of good information on the subject of setting up a MQ system out there, I can't find a lot about the actual implementation. I'm looking for patterns and best practices on how to properly format messages for a queue, and ways to execute the jobs in PHP. Should I use JSON, serialized objects, text, URLs or XML? What information should I send? Is a worker with a switch($job['command']) {} (or something like that) the way to go, or are there any established patterns out there to implement a worker? Help greatly appreciated!

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• HttpSessionState Where, How, Advantages?

  - by blgnklc

  You see the code below, how I did use the session variable; So the three questions are; 1- Where are they stored? (Server or Client side) 2- Are they unique for each web page visitor? 3- Can I remove it using ajax or simple js code when my job is done with it? or it will be removed automatically..? sbyte[][] arrImages = svc.getImagesForFields(new String[] { "CustomerName", "CustomerSurName" }); Dictionary<string, byte[]> smartImageData = new Dictionary<string, byte[]>(); int i = 0; foreach (sbyte[] bytes in arrImages) { smartImageData.Add(fieldNames[i], ConvertToByte(bytes)); i++; } Session.Add("SmartImageData", smartImageData);

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• What is good practice for writing web applications that control daemons (and their config files)

  - by Jones R

  Can someone suggest some basic advice on dealing with web applications that interact with configuration files like httpd.conf, bind zone files, etc. I understand that it's bad practice, in fact very dangerous to allow arbitrary execution of code without fully validating it and so on. But say you are tasked to write a small app that allows one to add vhosts to an apache configuration. Do you have your code execute with full privileges, do you write future variables into a database and have a cron job (with full privileges) execute a script that pulls the vars from the database and throws them into a template config file, etc. Some thoughts & contributions on this issue would be appreciated. tl;dr - how can you securely write a web app to update/create entries in a config file like apache's httpd.conf, etc.

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• An Attitude of Programming Gratitude

  - by DonnyD

  A few years ago, I felt privileged to be involved in a mature open-source project where my salary was paid by a government research grant. As it turned out, I was ill-equipped for this three-month contract which included some very stressful network support in a medical setting and, to add to that, the project was poorly managed with poor lines of communication. My dream job had suddenly become a nightmare. Never, in my experience, though, did I learn as much about programming in as short a period of time. Psychologically, the only way through this episode in my life was for me to actively look for the good in things and focus on my love of programming. What role has gratitude played in your life as a programmer?

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• To create new DB connection or not?

  - by Yeti

  I'm running a cron job (every 15 minutes) which takes about a minute to execute. It makes lots of API calls and stores data to the database. Right now I create a mysql connection at the beginning and use the same connection through out the code. Most of the time is spent making the API calls. Will it be more efficient to create a new database connection only when it's time to store the data (below)? Kill the last connection Wait for API call to complete Create new DB connection Execute query Goto 1

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• define global in a python module from C api

  - by wiso

  Sorry for the trivial question, but I can't find this infomation from the manual. I am developping a module for python using C api; how can I create a variabile that is seen as global from python? For example if my module is module I want to create a variable g that do this job: import module print module.g in particular g is an integer. Solution from Alex Martelli PyObject *m = Py_InitModule("mymodule", mymoduleMethods); PyObject *v = PyLong_FromLong((long) 23); PyObject_SetAttrString(m, "L", v); Py_DECREF(v);

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• How to close a form in UserControl

  - by FJPoort

  I created a UserControl with the buttons Save, Close and Cancel. I want to close the form without saving on the Cancel button, prompt a message to save on the Close button and Save without closing on the Save button. Normally, I would have used this.Close() on the Cancel button, but the UserControl doesn't have such an option. So I guess I have to set a property for that. Scrolling down the "Questions that may already have your answer" section, I came across this question: How to close a ChildWindow from an UserControl button loaded inside it? I used the following C# code: private void btnCancel_Click(object sender, EventArgs e) { ProjectInfo infoScreen = (ProjectInfo)this.Parent; infoScreen.Close(); } This does the job for one screen, but I wonder if I have to apply this code for all the screen I have? I think there should be a more efficient way. So my question is: Do I need to apply this code for every form I have, or is there another (more efficient) way?

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• Useless variable name in C struct type definition

  - by user1210233

  I'm implementing a linked list in C. Here's a struct that I made, which represents the linked list: typedef struct llist { struct lnode* head; /* Head pointer either points to a node with data or NULL */ struct lnode* tail; /* Tail pointer either points to a node with data or NULL */ unsigned int size; /* Size of the linked list */ } list; Isn't the "llist" basically useless. When a client uses this library and makes a new linked list, he would have the following declaration: list myList; So typing llist just before the opening brace is practically useless, right? The following code basically does the same job: typedef struct { struct lnode* head; /* Head pointer either points to a node with data or NULL */ struct lnode* tail; /* Tail pointer either points to a node with data or NULL */ unsigned int size; /* Size of the linked list */ } list;

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• Transitioning from C++ to C#

  - by Jim

  I am very experienced in C and C++ but am having problems finding current opportunities. I decided to switch to C# but noticed that while the syntax is very similar, the programming styles are very different (we don't have IEnumerable etc in C). So the problem I am having now is having 20 years of experience but is only a junior when it comes to interviewing for a C# job. Most of the problems are me not being able to answer questions like 1) How do you do XYZ in Sql Server? 2) What's the use of in Spring.NET In other words, the phone interviewers don;t care if you know DB programming or not - they want to know if you know SQL Server. I am frustrated because the guys who are doing the interviews seem to be so narrow sighted in knowing ONLY C#, .NET and SQL Server, that I don't know how to get past them.

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• Sort Java List/Map by order in which items are in an XML File

  - by Brandon Smith

  Hello everyone, What I'm looking to do is to sorta a Java List or Map in the order the items are in a XML File. For Example I have a list of function names as so: functionOne functionThree functionTwo The XML File looks like this: <xml> <function>functionOne</function> <function>functionTwo</function> <function>functionThree</function> </xml> So I would like to sort the list so the function names are as so: functionOne functionTwo functionThree Now Im trying to do this for Variables as well, so there are around 500+ unique 'items'. Does anyone have any idea how I can go about doing this? Now for the file that determines that sort order doesn't have to be XML it just what I use the most, it can be anything that can get the job done. Thanks in advance for your time.

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• Data driven charts and graphs from xml to svg

  - by garymlewis

  I asked this question a week ago, but did not do a good job of describing the problem. Here's a second attempt. I'd like to produce data-driven charts, graphs, and other data visualizations, starting with data in an xml database and ending up with the visualizations as SVG. Here's an example from the W3C. It uses Javascript to create a stacked bar chart as SVG from xml. I'd like to do something similar but use a graphics library (or ???) instead of js to handle the construction of axes, labels, titles, data points, etc. My question, then: what are the options that I should consider ... things like Raphael I suppose, but initially I'd like to cast a wide net and look at many different options. My experience is all with static data visualizations using statistics packages like R, but eventually I'd like to create interactive data visualizations with html5/css3/svg. Any help would be much appreciated. Thanks.

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• Assign value to list

  - by Kenneth B

  Hello First and foremost. I'm totally new to "programming" in Excel. I'm trying to make a price calculator, that calculates the price when I use my printer. I have made some lists so it's easy to perform the calculations. Single or duplex: Singlex/Duplex Format: SRA3 / A4 / SRA3 High Gloss The idea is that if I type in an amount of 100 prints, choose SRA3 format on the list, and choose Duplex on the other list. the calculation would look like this: This is how it's calculated: Paper + (print x sides) = Price of the print job Print prices Per page (singlex or duplex): 0,6 Paper format and price: A4 reg. paper: 0,2 SRA3 High Gloss: 1,25 SRA3 reg. paper: 1 Does anyone know about this???

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• Error in vb.net windows service when connecting to SQL

  - by Clint

  I've installed a vb.net windows service on a Windows 2008 machine, that is attempting to connect to SQL 2005. The service starts succesfully, but can't see the database. The event log has the following entry. The description for Event ID 0 from source SU4.ESMR.DAL.Job.FillPriorityJobByType(oJobDS, TypeID: 3 cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. This was tested locally on both XP and 2008. All environments are 32 bit.

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• How to specify a password on the command line of an SSIS package run

  - by Vaccano

  I am having an issue where I need to be able to specify the password when I run my packages. This article http://support.microsoft.com/kb/918760 says: Method 3: Set the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword Change the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword. This setting uses a password for encryption. You can then modify the SQL Server Agent job step command line to include this password. That all sounds well and good. But where and how to you specify the password? Here is an example of my current command line: /FILE "C:\Program Files\Microsoft SQL Server\100\DTS\Packages \MainSSISPackage.dtsx" /CONFIGFILE "C:\Program Files \Microsoft SQL Server\100\DTS\Packages\DataConfig.dtsConfig" /CHECKPOINTING OFF /REPORTING E

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• What are some practical uses of generating all permutations of a list, such as ['a', 'b', 'c'] ?

  - by Jian Lin

  I was asked by somebody in an interview for web front end job, to write a function that generates all permutation of a string, such as "abc" (or consider it ['a', 'b', 'c']). so the expected result from the function, when given ['a', 'b', 'c'], is abc acb bac bca cab cba Actually in my past 20 years of career, I have never needed to do something like that, especially when doing front end work for web programming. What are some practical use of this problem nowadays, in web programming, front end or back end, I wonder? As a side note, I kind of feel that expecting a result in 3 minutes might be "either he gets it or he doesn't", especially I was thinking of doing it by a procedural, non-recursive way at first. After the interview, I spent another 10 minutes and thought of how to do it using recursion, but expecting it to be solved within 3 minutes... may not be a good test of how qualified he is, especially for front end work.

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• Ampersand in JSON/PHP in POST

  - by svenkapudija

  I'm having a text field which is send via JSON and jQuery (wrapped with .toJSON function) to my server via AJAX and POST request. On PHP side I'm doing json_decode . Everything works but if I put ampersand (&) inside it splits up the POST parameter so its incomplete on PHP side (at least what var_dump($_POST) is writing out). Shouldn't the toJSON and json_decode do all the job (escaping)? I tried encodeURIComponent, & to &amp;, & to \u0026 and it's not working. What I'm doing wrong? AJAX call function execute() { this.setupUrl(); return $.ajax({ type: this.requestMethod, data: this.getDataParams(), url: this.url }); } function getDataParams() { if(this.data != undefined) { if(this.requestMethod == 'POST' || this.requestMethod == 'PUT') { return "data=" + $.toJSON(this.data); } else if (this.requestMethod == 'GET') { return this.data; } } else { return null; } }

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• MC75 using symbol.imaging.device libraries for program

  - by Christy

  UPDATE: I found another library in the Windows Mobile - CameraCaptureDialog - this did the job - never did figure out the zero length available devices... Hi all, I have a .net application running on a symbol mc75 (motorola) using the scanner. I am now trying to add functionality for the camera and I am running into issues. To find the 'devices' you are supposed to use the library's 'available devices' function. With the barcode it is symbol.barcode.devices.availabledevices and it returns two items (you can scan from the scanner or using the camera device) However, when I do the camera library it does not find any devices - symbol.imaging.devices.availabledevices returns 0 I can take a picture using the software on the mc75, so I know the functionality is there, I just can't figure out how to get to it programmatically.... Does anyone have any ideas? Thanks for any help!

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• Can't establish a DB connection. (Maybe threads related)

  - by JobGovernor

  Hello, I am getting this exception on the Rufus::Scheduler ActiveRecord::ConnectionTimeoutError: could not obtain a database connection within 5 seconds. The max pool size is currently 30; consider increasing it. I've increased the pool from 10 to 30. And I also monkey patched the method which raises the exception to also call ActiveRecord::Base.verify_active_connections! before doing its job. And I also restarted the service which executes the script so that the new code is run. Any ideas would be greatly appreciated. Let me know if you need any other info about environment or whatnot. Thank you.

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• How can you get the first digit in an int (C#)?

  - by Dinah

  In C#, what's the best way to get the 1st digit in an int? The method I came up with is to turn the int into a string, find the 1st char of the string, then turn it back to an int. int start = Convert.ToInt32(curr.ToString().Substring(0, 1)); While this does the job, it feels like there is probably a good, simple, math-based solution to such a problem. String manipulation feels clunky. Edit: irrespective of speed differences, mystring[0] instead of Substring() is still just string manipulation

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• Filter a List via Another

  - by user1166905

  I have a requirement to filter a list of Clients based on if they haven't had any jobs booked in the last x months. In my code I have two lists, one is my Clients and the other is a filtered List of Jobs between today and x months ago and the idea is to filter Clients based on their id not appearing in the jobs list. I tried the following: filteredClients.Where(n => jobsToSearch.Count(j => j.Client == n.ClientID) == 0).ToList(); But I seem to get ALL clients regardless. I can easily do a foreach but this severly slows down the process. How can I filter the client list based on the job list effectively?

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