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  • DataGridView's SelectionChange event firing twice on DataBinding even after removing event binding

    - by Shantanu Gupta
    This Code triggers selection change event twice. how can I prevent it ? Currently i m using a flag or focused property to prevent this. But what is the actual way ? I am using it on winfoms EDIT My Mistake in writing Question, here is the correct code that i wanted to ask private void frmGuestInfo_Load(object sender, EventArgs e) { this.dgvGuestInfo.SelectionChanged -= new System.EventHandler(this.dgvGuestInfo_SelectionChanged); dgvGuestInfo.DataSource=dsFillControls.Tables["tblName"]; this.dgvGuestInfo.SelectionChanged += new System.EventHandler(this.dgvGuestInfo_SelectionChanged); } private void dgvGuestInfo_SelectionChanged(object sender, EventArgs e) { //this function is raised twice, i was expecting that this will not be raised }

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  • how to get 12 for joel test working in a small team of 3-4 on php website?

    - by keisimone
    Hi i read this inspired, i am asking for specific help to achieve a 12 for my current project. i am working in a team of 3-4 on a php project that is based on cakephp. i only have a dedicated server running on linux which i intend to have the website live on. and i have a plan with assembla where i am using its svn repository. that's it. i like to hear a major, impactful step towards answering each point raised by the joel test. by impactful i mean doing just this one thing would raise my project to scoring or close to scoring on that area of the joel test. lets begin: 1) do you have a source control system? I am very proud to say learning how to use svn even though we know nuts about branch/release policies made the biggest impact to our programming lives. and the svn repos is on assembla paid plan. Feel free to add if anyone thinks we can do more in this area. 2) Can you make a build in one step? i think the issue is how do i define as a build? i think we are going to define it as if tomorrow my dedicated server crashed and we found another server from another normal hosting provider and all my team's machines all destroyed, how are we going to get the website up again? my code is in svn on assembla. 1 step means as close to 1 button to push as possible. 3)Do you make daily builds? i know nothing about this. please help. i googled and came across this phpundercontrol. but i am not sure if we can get that to work with assembla. are there easier ways? 4)Do you have a bug database? we have not used the assembla features on bug tracking. ashamed to say. i think i will sort this out myself. 5)Do you fix bugs before writing new code? policy issue. i will sort it out myself. 6)Do you have an up-to-date schedule? Working on it. Same as above. estimates have historically been overly optimistic. having spent too much time using all sorts of funny project management tools, i think this time i am going to use just paper and pen. please dont tell me scrum. i need to keep things even simpler than that. 7)Do you have a spec? We do, but its in paper and pen. what would be a good template? 8)Do programmers have quiet working conditions? Well we work at home and in distributed manner. so .. 9)Do you use the best tools money can buy? We use cheap tools. we are not big. 10)Do you have testers? NO testers. Since we have a team of 3, i think i should go get 1 tester. even on a part time basis. so i should get this 1 part time tester test in what manner to extract maximum effects? should i get him to write out the test scenarios and expected outcomes and then test it? or i write the test scenarios and then ask him to do it? we will be writing the test cases ourselves using simpletest. i came across selenium. how useful is that? 11)Do new candidates write code during their interview? Not applicable. But i will do it next time i try to hire anyone else. hires or contractors alike. 12)Do you do hallway usability testing? Will do so on a per month or per milestone basis. i will grab my friends who are not net-savvy. they will be the best testers of this type. Thank you.

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  • Change present working directory of a calling shell from a ruby script

    - by Erik Kastman
    I'm writing a simple ruby sandbox command-line utility to copy and unzip directories from a remote filesystem to a local scratch directory in order to unzip them and let users edit the files. I'm using Dir.mktmpdir as the default scratch directory, which gives a really ugly path (for example: /var/folders/zz/zzzivhrRnAmviuee+++1vE+++yo/-Tmp-/d20100311-70034-abz5zj) I'd like the last action of the copy-and-unzip script to cd the calling shell into the new scratch directory so people can access it easily, but I can't figure out how to change the PWD of the calling shell. One possibility is to have the utility print out the new path to stdout and then run the script as part of a subshell (i.e. cd $(sandbox my_dir) ), but I want to print out progress on the copy-and-unzipping since it can take up to 10 minutes, so this won't work. Should I just have it go to a pre-determined, easy-to-find scratch directory? Does anyone have a better suggestion? Thanks in advance for your help. -Erik

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  • Using Tweepy API behind proxy

    - by user1505819
    I have a using Tweepy, a python wrapper for Twitter.I am writing a small GUI application in Python which updates my twitter account. Currently, I am just testing if the I can get connected to Twitter, hence used test() call. I am behind Squid Proxy server.What changes should I make to snippet so that I should get my work done. Setting http_proxy in bash shell did not help me. def printTweet(self): #extract tweet string tweet_str = str(self.ui.tweet_txt.toPlainText()) ; #tweet string extracted. self.ui.tweet_txt.clear() ; self.tweet_on_twitter(str); def tweet_on_twitter(self,my_tweet) : auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET); auth.set_access_token(ACCESS_KEY, ACCESS_SECRET) ; api = tweepy.API(auth) ; if api.test() : print 'Test successful' ; else : print 'Test unsuccessful';

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  • Common way to compare timestamp in oracle, postgres and mssql

    - by Pratik
    Hi There! I am writing a sql query which involves finding if timestamp falls in particular range of days . I have written that in the postgres but it doesn't works in oracle and msssql. Is there are common way to compare the timestamp across different database. My postgres sql looks something like this ... AND creation_date < (CURRENT_TIMESTAMP - interval '5 days') AND creation_date >= (CURRENT_TIMESTAMP - interval '15 days') ... Thanks! Pratik

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  • Returning a tuple of multipe objects in Python C API

    - by celil
    I am writing a native function that will return multiple Python objects PyObject *V = PyList_New(0); PyObject *E = PyList_New(0); PyObject *F = PyList_New(0); return Py_BuildValue("ooo", V, E, F); This compiles fine, however, when I call it from a Python program, I get an error: SystemError: bad format char passed to Py_BuildValue How can this be done correctly? EDIT: The following works PyObject *rslt = PyTuple_New(3); PyTuple_SetItem(rslt, 0, V); PyTuple_SetItem(rslt, 1, E); PyTuple_SetItem(rslt, 2, F); return rslt; However, isn't there a shorter way to do this?

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  • iPhone Problem comparing course value for cllocation

    - by zebra
    hi all, i'm writing some code for getting some values including course -(void) locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { //somecode NSString *dirString = [[NSString alloc] initWithFormat:@"%d", newLocation.course]; int myInt = [dirString intValue]; if ((myInt >= 0) || (myint < 90)) {course.text =@ "N";} if ((myInt >= 90) || (myint < 180)) {course.text =@ "E";} and so on, but i always retrieve the first value, "N". where's my mistake? Thank's!

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  • Excel Interop: Range.FormatConditions.Add throws MissingMethodException

    - by Zach Johnson
    I am writing an application which uses the Microsoft.Office.Interop.Excel assembly to export/import data from Excel spreadsheets. Everything was going fine (except for 1 based indexing and all those optional parameters!), until I tried to use conditional formatting. When I call Range.FormatConditions.Add I get a MissingMethodException telling me that no such method exists. This happens in both Vista and XP. Here's an example of the code that generates the exception: //1. Add a reference to Microsoft.Office.Interop.Excel (version 11.0.0.0) //2. Compile and run the following code: using Microsoft.Office.Interop.Excel; class Program { static void Main(string[] args) { Application app = new Application(); Workbook workbook = app.Workbooks[1]; Worksheet worksheet = (Worksheet)workbook.Worksheets[1]; Range range = worksheet.get_Range("A1", "A5"); FormatCondition condition = range.FormatConditions.Add( XlFormatConditionType.xlCellValue, XlFormatConditionOperator.xlBetween, 100, 200); } }

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  • teaching my self Z/OS assembler?

    - by Jared
    'I've interned at a company that does a lot of mainframe work. Most of my mainframe experience has been using Java and Unix System Services. I've had some experience with the ISPF interface and C but none with assembler. I’m graduating shortly and will be taking an independent study my last semester. I’d like to stick with the mainframe and was wondering what resources could teach me mainframe assembler? Note I don’t have experience writing assembler for any platform but do understand binary, hex, and have a theoretical understanding of registers.

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  • C# best means to store data locally when offline

    - by mickartz
    I am in the midst of writing a small program (more to experiment with vs 2010 than anything else) Despite being an experiment it has some practical use for our local athletics club. My thought was to access the DB (currently online) to download the current members and store locally on a laptop (this is a MS sql table, used to power the club's website). take the laptop to the event (yes there ARE places that don't have internet coverage), add members to that days race (also a row from a sql table (though no changes would be made to this), record results (new records in 3rd table) Once home, showered and within internet access again, upload/edit the tables as per the race results/member changes etc. So I was thinking i'd do something like write xml files locally with the data, including a field to indicate changes etc? If anyone can point me in a direction i would appreciate it...hell if anyone could tell me if this has a name!!..I'd appreciate it TIA Michael Artz

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  • How to track humans, but not spiders?

    - by johnnietheblack
    I am writing a nice little PHP/MySQL/JS ad system for my site - charging by impression. Therefore, my clients would like to be sure that they aren't paying for impressions caused by robots / spiders / etc. Is there a decently effective way to decipher between human and robot, without doing something obstructive like a captcha, or requesting "no index" or something? Basically, is there some sort of "name tag" that legit spiders have on so that my site knows their presence, therefore letting me react accordingly? And, if there isn't...how do ad companies like Google defend against this?

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  • ASP.NET HTTPHandler

    - by josephj1989
    I have an HttpHandler class (implements IHttphandler) where the path defined for the handler in web.config is *.jpg. I am requesting a Jpg image in my page. Within the HTTP Handler I am writing to a file in the filesystem. By mistake I was trying to write to a non existant directory. This should have thrown an exception but the execution simply proceeds.Ofcourse no file is writte. But if I give a proper directory the file is written correctly.Is there anything special about HttpHandler Exceptions. See part of the code public void ProcessRequest(HttpContext context){ File.WriteAllLines(context.Request.ApplicationPath+@"\"+"resul.log",new string[]{"Entered JPG Handler"});

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  • Spawn a background process in Ruby

    - by Dave DeLong
    I'm writing a ruby bootstrapping script for a school project, and part of this bootstrapping process is to start a couple of background processes (which are written and function properly). What I'd like to do is something along the lines of: `/path/to/daemon1 &` `/path/to/daemon2 &` `/path/to/daemon3 &` However, that blocks on the first call to execute daemon1. I've seen references to a Process.spawn method, but that seems to be a 1.9+ feature, and I'm limited to Ruby 1.8. I've also tried to execute these daemons from different threads, but I'd like my bootstrap script to be able to exit. So how can I start these background processes so that my bootstrap script doesn't block and can exit (but still have the daemons running in the background)? Thanks!

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  • How to write the Visitor Pattern for Abstract Syntax Tree in Python?

    - by bodacydo
    My collegue suggested me to write a visitor pattern to navigate the AST. Can anyone tell me more how would I start writing it? As far as I understand, each Node in AST would have visit() method (?) that would somehow get called (from where?). That about concludes my understanding. To simplify everything, suppose I have nodes Root, Expression, Number, Op and the tree looks like this: Root | Op(+) / \ / \ Number(5) \ Op(*) / \ / \ / \ Number(2) Number(444) Can anyone think of how the visitor pattern would visit this tree to produce output: 5 + 2 * 444 Thanks, Boda Cydo.

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  • How to learn high-level Java web development concepts

    - by titaniumdecoy
    I have some experience writing web applications in Java for class projects. My first project used Servlets and my second, the Stripes framework. However, I feel that I am missing the greater picture of Java web development. I don't really understand the web.xml and context.xml files. I'm not sure what constitutes a Java EE application as opposed to a generic Java web application. I can't figure out how a bean is different from an ordinary Java class (POJO?) and how that differs from an Enterprise Java Bean (EJB). These are just the first few questions I could think of, but there are many more. What is a good way to learn how Java web applications function from the top down rather than simply how to develop an application with a specific framework? (Is there a book for this sort of thing?) Ultimately, I would like to understand Java web applications well enough to write my own framework.

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  • Java: Read POST data from a socket on an HTTP server

    - by danpalmer
    I have a website (python/django) that needs to use a load of Java resources that may or may not be on the same server. Therefore I am writing a mini webserver in Java that will receive a request and then when processing is finished, POST some data back to a url on the site. I have got the java code receiving connections on sockets and responding with some simple HTML. My problem is that I will POST data to the Java server and that code needs to act on the data. How do I go about reading the data that is posted in the HTML request, if it is even possible. If not, is there any other way you would do this. If you think I am going about this in completely the wrong way then please tell me and I will consider another method, but after conversing with some Java developers, this seemed like the best way for what I was doing. Thanks

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  • Chrome plugin process - npapi plugin

    - by kambamsu
    Hi, I'm writing an npapi plugin in Qt. My plugin works perfectly on firefox and opera. The problem in chrome i guess is regarding the "process-per-plugin" setup. What happens is, when i first open a page, the plugin is injected and all works as per expected. But when i navigate from that page to another one, in the new page, the plugin seems to get injected but even its constructor isnt called. To examine the issue, I tried killing my plugin process via the chrome task manager before i navigate to the new page. When i do this, the plugin works as expected in the 2nd page too. I'm unable to comprehend what is happening here. Any help would be appreciated. Thanks

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  • SignalR: hub invokation request

    - by Yuriy Pogrebnyak
    I'm writing custom SignalR client and I need to implement hub invokation. As I understood from .NET client code, I need to send post request to the following url (after establishing connection with server): http://serverurl/signalr/send?transport=serverSentEvents&connectionId=<my_connection_id> . In request body I need to send json string containing basic information about the invoked method. My question is how should this json look like? I'm trying to send smth like this (again, judging by .NET client code): {"data" : {"Hub" : "hubname", "Method" : "methodname", "Args" : {"message" : "msg"} } } But I get the following error: System.ArgumentNullException: Value cannot be null. Parameter name: s. What am I doing wrong? What are required parameters of sending json and how should it be formatted?

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  • Dynamic SQL to generate column names?

    - by Ben McCormack
    I have a query where I'm trying pivot row values into column names and currently I'm using SUM(Case...) As 'ColumnName' statements, like so: SELECT SKU1, SUM(Case When Sku2=157 Then Quantity Else 0 End) As '157', SUM(Case When Sku2=158 Then Quantity Else 0 End) As '158', SUM(Case When Sku2=167 Then Quantity Else 0 End) As '167' FROM OrderDetailDeliveryReview Group By OrderShipToID, DeliveryDate, SKU1 The above query works great and gives me exactly what I need. However, I'm writing out the SUM(Case... statements by hand based on the results of the following query: Select Distinct Sku2 From OrderDetailDeliveryReview Is there a way, using T-SQL inside a stored procedure, that I can dynamically generate the SUM(Case... statements from the Select Distinct Sku2 From OrderDetailDeliveryReview query and then execute the resulting SQL code?

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  • CRM 2011 XAML Workflows in VS 2012

    - by AlexR
    I'm writing this knowing there's another topic like this to be found here the answer provided however does not make much sense to me and whatever I tried doesn't seem to work so I'm seeking clarification. The situation is as follows: * New CRM 2011 toolkit solution * New project added for Xaml workflow * Adding CRM "Workflow" activity causes error The error: It shows a redbox "Could not generate view for Workflow" The Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. --- System.IO.IOException: Cannot locate resource 'workflowdesigner.xaml' I have VS 2012 SP2 with the latest (June) CRM SDK Toolkit installed. I did a clean install of the toolkit so it's not "upgraded" to prevent any old assemblies being referenced. I tried the things from the referenced question and moved the assemblies over and also re-referenced the latest assemblies to make sure everything works fine. I also tried downloading a workflow XAML created in CRM and opening but it gives the same error. I also opened the "example" workflow XAML solution in the SDK, again same result.

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  • Core data and special characters (UTF-8)

    - by MW
    I have an iPhone application using Core Data with an SQLite database in the bottom. I'm writing some text content from the database to a file, but special characters such as Å, Ä and Ö are corrupted in the file (they show up just fine in the application). When creating and inserting data, I am not using any special encoding. I'm just taking the NSString (entered by the user in a UITextField) and putting it in my persistent objects. When saving the file, I use the following code: [csvString writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error]; I tried adding a BOM to the beginning of the text ("\xef\xbb\xbf") but it is still corrupted. Anyone has any ideas where the problem might be? Examples of corrupted characters: å becomes ö, ä becomes ä

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  • How can I use Lucene for personal name (first name, last name) search?

    - by os111
    I'm writing a search feature for a database of NFL players. The user enters a search string like "Jason Campbell" or "Campbell" or "Jason". I'm having trouble getting the appropriate results. Which Analyzer should I use when indexing? Which Query when querying? Should I distinguish between first name and last name or just index the full name string? I'd like the following behavior: Query: "Jason Campbell" - Result: exact match for 1 player, Jason Campbell Query: "Campbell" - Result: all players with Campbell in their name Query: "Jason" - Result: all players with Jason in their name Query: "Cambel" [misspelled] - Result: all players with Campbell in their name

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  • OpenGL Game development for the Desktop / Platform issues

    - by anon
    Does anyone have experience writing professional OpenGL games on Windows? For the Mac, due to apple's control, the OS seems quite "uniform". For windows, due to different hardware, different drivers installed, etc ... the hardware base seems to have many many different configurations. In theory, OpenGL provides a API that abstracts all this away. In practice, many drivers are often buggy and have weird cases -- has this been a problem for developing games on Windows? Thanks!

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  • PycURL RESUME_FROM

    - by excid3
    I can't seem to get the RESUME_FROM option to work. Here's some example code that I have been testing with: import os import pycurl import sys def progress(total, existing, upload_t, upload_d): try: frac = float(existing)/float(total) except: frac = 0 sys.stdout.write("\r%s %3i%%" % ("file", frac*100) ) url = "http://launchpad.net/keryx/stable/0.92/+download/keryx_0.92.4.tar.gz" filename = url.split("/")[-1].strip() def test(debug_type, debug_msg): print "debug(%d): %s" % (debug_type, debug_msg) c = pycurl.Curl() c.setopt(pycurl.URL, url) c.setopt(pycurl.FOLLOWLOCATION, 1) c.setopt(pycurl.MAXREDIRS, 5) # Setup writing if os.path.exists(filename): f = open(filename, "ab") c.setopt(pycurl.RESUME_FROM, os.path.getsize(filename)) else: f = open(filename, "wb") c.setopt(pycurl.WRITEDATA, f) #c.setopt(pycurl.VERBOSE, 1) c.setopt(pycurl.DEBUGFUNCTION, test) c.setopt(pycurl.NOPROGRESS, 0) c.setopt(pycurl.PROGRESSFUNCTION, progress) c.perform()

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  • Unit Testing & Fake Repository implementation with cascading CRUD operations

    - by Erik Ashepa
    Hi, i'm having trouble writing integration tests which use a fake repository, For example : Suppose I have a classroom entity, which aggregates students... var classroom = new Classroom(); classroom.Students.Add(new Student("Adam")); _fakeRepository.Save(classroom); _fakeRepostiory.GetAll<Student>().Where((student) => student.Name == "Adam")); // This query will return null... When using my real implementation for repository (NHibernate based), the above code works (because the save operation would cascade to the student added at the previous line), Do you know of any fake repository implementation which support this behaviour? Ideas on how to implement one myself? Or do you have any other suggestions which could help me avoid this issue? Thanks in advance, Erik.

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