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  • tips for fixing bad coding/dev habits ?

    - by dfafa
    i want to become a better coder....so i have decided to sign up for computing science program...maybe a formal education can assist me. i started working on smaller projects to learn but currently i have really bad coding/dev habits which is hindering my productivity as the codebase increases.... i have highlighted them and perhaps someone could make suggestions (or redirect to resources) or a more efficient method. most stuff that i made in the past were web apps. i usually develop with putty + nano...i just love the minimalist feel i use winscp and develop directly on my private web server...too lazy to do it on localhost and upload it later. i dont use subversion control...which one do i need ? sometimes ctrl +z doesn't work well. when i run out of ideas for naming variable, i use swear words instead. i swear a lot when i get stuck....how to deal with anger issue ? my codes look ugly with comments everywhere. would rather use procedural coding finds "thinking" in OO difficult and time consuming i "write first think later". refactors code only if i am getting paid for it. dislikes configuring linux distro, Apache, MySQL, scaling, designing graphics and layouts. does not like writing tests likes working alone. does not like sharing codes. has an econ degree dislikes reading other people's code would rather write it on my own it seems my only true desire is to translate my ideas to a working prototype as fast as possible....it seems like i am very uninterested in the other details...could it be that i am not cut out to be a coder after all ? is going back to study comp sci a bad idea ?

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  • Are Dynamic Prepared Statements Bad? (with php + mysqli)

    - by John
    I like the flexibility of Dynamic SQL and I like the security + improved performance of Prepared Statements. So what I really want is Dynamic Prepared Statements, which is troublesome to make because bind_param and bind_result accept "fixed" number of arguments. So I made use of an eval() statement to get around this problem. But I get the feeling this is a bad idea. Here's example code of what I mean // array of WHERE conditions $param = array('customer_id'=>1, 'qty'=>'2'); $stmt = $mysqli->stmt_init(); $types = ''; $bindParam = array(); $where = ''; $count = 0; // build the dynamic sql and param bind conditions foreach($param as $key=>$val) { $types .= 'i'; $bindParam[] = '$p'.$count.'=$param["'.$key.'"]'; $where .= "$key = ? AND "; $count++; } // prepare the query -- SELECT * FROM t1 WHERE customer_id = ? AND qty = ? $sql = "SELECT * FROM t1 WHERE ".substr($where, 0, strlen($where)-4); $stmt->prepare($sql); // assemble the bind_param command $command = '$stmt->bind_param($types, '.implode(', ', $bindParam).');'; // evaluate the command -- $stmt->bind_param($types,$p0=$param["customer_id"],$p1=$param["qty"]); eval($command); Is that last eval() statement a bad idea? I tried to avoid code injection by encapsulating values behind the variable name $param. Does anyone have an opinion or other suggestions? Are there issues I need to be aware of?

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  • Are bad data issues that common?

    - by Water Cooler v2
    I've worked for clients that had a large number of distinct, small to mid-sized projects, each interacting with each other via properly defined interfaces to share data, but not reading and writing to the same database. Each had their own separate database, their own cache, their own file servers/system that they had dedicated access to, and so they never caused any problems. One of these clients is a mobile content vendor, so they're lucky in a way that they do not have to face the same problems that everyday business applications do. They can create all those separate compartments where their components happily live in isolation of the others. However, for many business applications, this is not possible. I've worked with a few clients, one of whose applications I am doing the production support for, where there are "bad data issues" on an hourly basis. Yeah, it's that crazy. Some data records from one of the instances (lower than production, of course) would have been run a couple of weeks ago, and caused some other user's data to get corrupted. And then, a data script will have to be written to fix this issue. And I've seen this happening so much with this client that I have to ask. I've seen this happening at a moderate rate with other clients, but this one just seems to be out of order. If you're working with business applications that share a large amount of data by reading and writing to/from the same database, are "bad data issues" that common in your environment?

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  • IIS Smooth Streaming Manifest Bad Request Error

    - by snatch-02
    Hi, I installed IIS Media Services 3.0, and the Big Buck Bunny sample, but when I try to get the manifest file (http://localhost/Big_Buck_Bunny/Big Buck Bunny.ism/Manifest), I get 400.0 Bad Request error from the SmoothHandler. So the default.html appears in the browser, but the SL player shows error while trying to read the manifest. Anyone knows what can be the problem?

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  • SAXException: bad envelope tag

    - by David Guzman
    I'm trying to connect to a webservice https protected through a webservice client. Eclipse generated a stub based webservice client and looks nice to me. The problem comes when I try to call a method from the webservice: String a = (String)webservice.userProfileServices(xml); I'm also using the following SOAP headers: esgGatewayPort = (new EsgGatewayLocator()).getesgGatewayPort(); //setting the authentication header PrefixedQName name = new PrefixedQName("http://schemas.xmlsoap.org/ws/2002/07/secext","Security","wsse"); System.out.println("Setting headers for authentication"); org.apache.axis.message.SOAPHeaderElement sh = new org.apache.axis.message.SOAPHeaderElement(name); SOAPElement sub; try { String clntUserName="myUser"; String clntPassword="myPassword"; sub = sh.addChildElement("UsernameToken"); SOAPElement element = sub.addChildElement("Username"); element.addTextNode(clntUserName); element = sub.addChildElement("Password"); element.addTextNode(clntPassword); ((org.apache.axis.client.Stub) esgGatewayPort).setHeader(sh); } catch (SOAPException e) { e.printStackTrace(); } I receive the following: AxisFault faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException faultSubcode: faultString: org.xml.sax.SAXException: Bad envelope tag: HTML faultActor: faultNode: faultDetail: {http://xml.apache.org/axis/}stackTrace:org.xml.sax.SAXException: Bad envelope tag: HTML at org.apache.axis.message.EnvelopeBuilder.startElement(EnvelopeBuilder.java:71) at org.apache.axis.encoding.DeserializationContext.startElement(DeserializationContext.java:1048) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) at weblogic.xml.jaxp.WebLogicXMLReader.parse(WebLogicXMLReader.java:133) at weblogic.xml.jaxp.RegistryXMLReader.parse(RegistryXMLReader.java:153) at javax.xml.parsers.SAXParser.parse(Unknown Source) at org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext.java:227) at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696) at org.apache.axis.Message.getSOAPEnvelope(Message.java:435) at org.apache.axis.transport.http.HTTPSender.readFromSocket(HTTPSender.java:796) at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java:144) at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) at org.apache.axis.client.AxisClient.invoke(AxisClient.java:165) at org.apache.axis.client.Call.invokeEngine(Call.java:2784) at org.apache.axis.client.Call.invoke(Call.java:2767) at org.apache.axis.client.Call.invoke(Call.java:2443) at org.apache.axis.client.Call.invoke(Call.java:2366) at org.apache.axis.client.Call.invoke(Call.java:1812) Any help will be truly appreciated David

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  • Using kEAGLRenderingAPIOpenGLES2 causes bad access in glMatrixMode

    - by hyn
    I am trying to use the ES 2 API in my app but using kEAGLRenderingAPIOpenGLES2 causes bad access at glMatrixMode(). There is a similar question here but doesn't answer my question. If I use kEAGLRenderingAPIOpenGLES1 then everything is fine. I could reproduce the same problem with Apple's sample code. What can I do to make glMatrixMode() work in ES 2?

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  • C# file Decryption - Bad Data

    - by Jon
    Hi all, I am in the process of rewriting an old application. The old app stored data in a scoreboard file that was encrypted with the following code: private const String SSecretKey = @"?B?n?Mj?"; public DataTable GetScoreboardFromFile() { FileInfo f = new FileInfo(scoreBoardLocation); if (!f.Exists) { return setupNewScoreBoard(); } DESCryptoServiceProvider DES = new DESCryptoServiceProvider(); //A 64 bit key and IV is required for this provider. //Set secret key For DES algorithm. DES.Key = ASCIIEncoding.ASCII.GetBytes(SSecretKey); //Set initialization vector. DES.IV = ASCIIEncoding.ASCII.GetBytes(SSecretKey); //Create a file stream to read the encrypted file back. FileStream fsread = new FileStream(scoreBoardLocation, FileMode.Open, FileAccess.Read); //Create a DES decryptor from the DES instance. ICryptoTransform desdecrypt = DES.CreateDecryptor(); //Create crypto stream set to read and do a //DES decryption transform on incoming bytes. CryptoStream cryptostreamDecr = new CryptoStream(fsread, desdecrypt, CryptoStreamMode.Read); DataTable dTable = new DataTable("scoreboard"); dTable.ReadXml(new StreamReader(cryptostreamDecr)); cryptostreamDecr.Close(); fsread.Close(); return dTable; } This works fine. I have copied the code into my new app so that I can create a legacy loader and convert the data into the new format. The problem is I get a "Bad Data" error: System.Security.Cryptography.CryptographicException was unhandled Message="Bad Data.\r\n" Source="mscorlib" The error fires at this line: dTable.ReadXml(new StreamReader(cryptostreamDecr)); The encrypted file was created today on the same machine with the old code. I guess that maybe the encryption / decryption process uses the application name / file or something and therefore means I can not open it. Does anyone have an idea as to: A) Be able explain why this isn't working? B) Offer a solution that would allow me to be able to open files that were created with the legacy application and be able to convert them please? Thank you

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  • Returning IEnumerable from an indexer, bad practice?

    - by fearofawhackplanet
    If I had a CarsDataStore representing a table something like: Cars -------------- Ford | Fiesta Ford | Escort Ford | Orion Fiat | Uno Fiat | Panda Then I could do IEnumerable<Cars> fords = CarsDataStore["Ford"]; Is this a bad idea? It's iconsistent with the other datastore objects in my api (which all have a single column PK indexer), and I'm guessing most people don't expect an indexer to return a collection in this situation.

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  • android layout images bad quality

    - by user1028269
    when I add images on layout it show in bad quality <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/sbackground" /> how to fix it? (I need to fix it only without programmatically) thanks

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  • UDK "Error, 'DefaultMesh': Bad command or expression"

    - by Ricket
    I'm porting UT3 code to UDK, and I am getting the following compile error with the UDK compiler: C:\UDK\UDK-2010-03\Development\Src\FixIt\Classes\ZPawn.uc(25) : Error, 'DefaultMesh': Bad command or expression The ZPawn class extends UTPawn. Line 25 is the following: DefaultMesh = SkeletalMesh(DynamicLoadObject(ZBotOwner(Owner).MeshToUse, class'SkeletalMesh')); Where did DefaultMesh go in UDK?

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  • Use of @keyword in C# -- bad idea?

    - by Robert Fraser
    In my naming convention, I use _name for private member variables. I noticed that if I auto-generate a constructor with ReSharper, if the member is a keyword, it will generate an escaped keyword. For example: class IntrinsicFunctionCall { private Parameter[] _params; public IntrinsicFunctionCall(Parameter[] @params) { _params = @params; } } Is this generally considered bad practice or is it OK? It happens quite frequently with @params and @interface.

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  • java.io.IOException: Bad DNS address - in opening a HttpConnection

    - by Shreyas
    Hi, I m opening a HttpConnection to a URL. Its working in simulator but when i try it in device, it gives "java.io.IOException: Bad DNS address" while opening the HttpConnection. I serached the forums but havent got the solution yet. That URL is opening in Blackberry device Internet Browser but not getting the HttpConnection (HttpConnection is coming NULL) when i try through my code.

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  • Finite State Machine : Bad design?

    - by f4
    Are Finite State Machines generally considered as bad design in OOP ? I hear that a lot. And, after I had to work on a really old, undocumented piece of C++ making use of it, I tend to agree. It was a pain to debug. what about readability/maintainability concerns?

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  • What are the design decisions involved in choosing how to expose a Java web application?

    - by Gary Rowe
    There are many ways to expose a Java web application to the consumer: application container (JBoss etc), servlet container (Tomcat etc), OSGi (Knopflerfish etc), self-executable WAR (Winstone etc) and so on. Are there any clear considerations where one approach should be favoured over another? As an example, could a collection of self-executable WARs running as raw Unix processes outperform the same applications deployed within Tomcat taking into account administration and scalability concerns?

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  • Gtk+ Tables for Layout - Good or Bad?

    - by wag2639
    Hi, I'm just starting to play around with GTK+ and I wanted to stop bad habits before they happen. I see that GTK+ seems to be a little based in HTML/CSS and I was wondering if there are any reasons to avoid using tables for layout.

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  • [Java2D] Is this bad practice? Multiple Graphics2D Objects

    - by m00st
    I've created a JPanel canvas that holds all graphics; namely JLabel. To get animated sprites to work you have to over ride the paintComponent of the extended JLabel class. I've successfully implemented animated sprites this way. Is it bad practice to have a Graphics2D canvas and then have multiple 'images' in their own Graphics2D?

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  • good word whitelist to override bad word black list

    - by dangerousguy
    I've read through the discussion here... http://stackoverflow.com/questions/273516/how-do-you-implement-a-good-profanity-filter I've decided to implement a bad word filter using the badlist referenced in that thread. However I'm thinking about the scunthorpe problem. (see wikipedia I can't post the link, I'm a new user) Is there a white list of words like scunthorpe and manuscript that I can use to override a black list? (not interested in discussions about sensorship etc)

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  • Wierd typeloadexception "Bad flags on delegate constructor."

    - by Marcus
    Hi, Anybody seen this exception before, Google doesn't have a single post regarding the exception. The code that raises the error is a simple add. Items.Add(item); System.TypeLoadException: Bad flags on delegate constructor. at System.Windows.Forms.ListView.Sort() at System.Windows.Forms.ListView.InsertItems(Int32 displayIndex, ListViewItem[] items, Boolean checkHosting) at System.Windows.Forms.ListView.ListViewNativeItemCollection.Add(ListViewItem value) at System.Windows.Forms.ListView.ListViewItemCollection.Add(ListViewItem value)

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  • Why is Visual Basic bad?

    - by Mike
    Why do programmers consider Visual Basic a bad language? Putting aside any gripes with Microsoft or with proprietary/non-free software in general, and looking the language itself. Syntax, style, etc. I have just started using it, and find the syntax rather terrible. But I'm wondering what are the most common specific problems.

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  • Is opening too many datacontexts bad?

    - by ryudice
    I've been checking my application with linq 2 sql profiler, and I noticed that it opens a lot of datacontexts, most of them are opened by the linq datasource I used, since my repositories use only the instance stored in Request.Items, is it bad to open too many datacontext? and how can I make my linqdatasource to use the datacontext that I store in Request.Items for the duration of the request? thanks for any help!

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