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  • Objects With No Behavior

    - by Patrick Donovan
    I've been teaching myself object oriented programming and I'm thinking about a situation where I have an object "Transaction", that has quite a few properties to it like account, amount, date, currency, type, etc. I never plan to mutate these data points, and calculation logic will live in other classes. My question is, is it poor Python design to instantiate thousands of objects just to hold data? I find the data far easier to work with embedded in a class rather than trying to cram it into some combination of data structures.

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  • A list vs. tuple situation in Python

    - by Alphonse
    Is there a situation where the use of a list leads to an error, and you must use a tuple instead? I know something about the properties of both tuples and lists, but not enough to find out the answer to this question. If the question would be the other way around, it would be that lists can be adjusted but tuples don't.

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  • Per-process CPU usage on Win95 / Win98 / WinME

    - by Hugh Allen
    How can you programmatically measure per-process (or better, per-thread) CPU usage under windows 95, windows 98 and windows ME? If it requires the DDK, where can you obtain that? Please note the Win9x requirement. It's easy on NT. EDIT: I tried installing the Win95/98 version of WMI, but Win32_Process.KernelModeTime and Win32_Process.UserModeTime return Null (as do most Win32_Process properties under win9x).

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  • How to read more than 256 columns from an excel file (2007 format) using OLEDB

    - by Nan T
    I'm trying to import a excel file with more than 256 columns using OLEDB in C#. I tried all kinds of things, but it doesn't seem to be possible to read more than 256 columns from a excel (2007 format) file. I'm wondering if it's a bug or I'm simply missing something. Here is the connection string I used: Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\myFolder\myExcel2007file.xlsx;Extended Properties="Excel 12.0

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  • setting user.dir system property in JBoss 5.1

    - by Spiderman
    In JBoss 4.2.3 the System property 'user.dir' is defined to be <JBoss-root>/bin when I ran the same application on JBoss 5.1 I noticed that it cannot find the System property user.dir why there is no default definition for version 5.1? and how can I define it manually? I followed this suggestion and added my property into properties-service.xml but it had no affect and still JBoss couldn't find the system:user.dir value.

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  • How a war file gets deployed in any application server?

    - by gurukulki
    I know that when a war file is created of my web application, i have to deploy it, that is if i am using JBoss i have to copy it to deploy folder and if using WAS i have to install it. But i want to know, When i start the server from where the server starts deploying my application. that is which is the entry point to start loading my classes, properties ,DB connections etc.. Thanks.

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  • Suggestions on documentation of a DB model when using Entity Framework 4

    - by Junior Ewing
    Any experiences on how to document Entity Framework 4 based Database projects? There is the Document and Summary properties on the Entities, but if we want to regenerate the model from the database at some point, it will be lost! Is there some way to map documentation data inside SQL to the Entities in the EDMX file so it is safe. Suggestions of other best practices? Ideally I want to be able to augo generate html/helpfile documentation from the DB when we deploy.

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  • Enabling ProGuard in Eclipse for Android

    - by Ted Hopp
    The new documentation on ProGuard for Android says to add a line to the default.properties file in the project home directory. However, on opening this file, I read at the top: # This file is automatically generated by Android Tools. # Do not modify this file -- YOUR CHANGES WILL BE ERASED! Am I missing something? Also, is there a way to enable ProGuard only for a production build from Eclipse (i.e., when exporting the finished product)?

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  • Set the Scrollbar width of a DataGridView

    - by jasonk
    I'm working on an app for a mobile device and would like to make a datagrid scrollbar button larger to enhance the touch screen usability. I do not want to alter the system settings windows display properties as this will affect the device as a whole. Is there an easy way to alter the width of the scrollbar on a datagrid view?

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  • NHibernate unintentional lazy property loading

    - by chiccodoro
    I introduced a mapping for a business object which has (among others) a property called "Name": public class Foo : BusinessObjectBase { ... public virtual string Name { get; set; } } For some reason, when I fetch "Foo" objects, NHibernate seems to apply lazy property loading (for simple properties, not associations): The following code piece generates n+1 SQL statements, whereof the first only fetches the ids, and the remaining n fetch the Name for each record: ISession session = ...IQuery query = session.CreateQuery(queryString); ITransaction tx = session.BeginTransaction(); List<Foo> result = new List<Foo>(); foreach (Foo foo in query.Enumerable()) { result.Add(foo); } tx.Commit(); session.Close(); produces: NHibernate: select foo0_.FOO_ID as col_0_0_ from V1_FOO foo0_<br/> NHibernate: SELECT foo0_.FOO_ID as FOO1_2_0_, foo0_.NAME as NAME2_0_ FROM V1_FOO foo0_ WHERE foo0_.FOO_ID=:p0;:p0 = 81<br/> NHibernate: SELECT foo0_.FOO_ID as FOO1_2_0_, foo0_.NAME as NAME2_0_ FROM V1_FOO foo0_ WHERE foo0_.FOO_ID=:p0;:p0 = 36470<br/> NHibernate: SELECT foo0_.FOO_ID as FOO1_2_0_, foo0_.NAME as NAME2_0_ FROM V1_FOO foo0_ WHERE foo0_.FOO_ID=:p0;:p0 = 36473 Similarly, the following code leads to a LazyLoadingException after session is closed: ISession session = ... ITransaction tx = session.BeginTransaction(); Foo result = session.Load<Foo>(id); tx.Commit(); session.Close(); Console.WriteLine(result.Name); Following this post, "lazy properties ... is rarely an important feature to enable ... (and) in Hibernate 3, is disabled by default." So what am I doing wrong? I managed to work around the LazyLoadingException by doing a NHibernateUtil.Initialize(foo) but the even worse part are the n+1 sql statements which bring my application to its knees. This is how the mapping looks like: <class name="Foo" table="V1_FOO"> ... <property name="Name" column="NAME"/> </class> BTW: The abstract "BusinessObjectBase" base class encapsulates the ID property which serves as the internal identifier.

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  • OpenCV application, moving from 32bits OS to 64 bits, any known issues ?

    - by Spredzy
    Hi all, I was developing an C++ application using OpenCV2.0 under Windows 32bits OS, I recently moved to a Windows 64 bits OS and now it's not working anymore. Compilation does not recognize the *.lib set in the project properties Then when I change their name - what I think I should not be supposed to do - It crashed at my first assignment : Vector.push_back(tmp) Does anyone has an idea ?

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  • Parsing JSON object in JQuery

    - by koby
    Hi, I have simple JSON object returned in form {"d":"{\"Name\":\"DMX100\",\"Description\":\"blah blah\",\"ID\":\" 780\",\"Make\":\"2010\"}"} How do I parse it in success. success: function(msg) { $('#something').html(msg.d.Name); } Above code doesnt display Name but when I pass $('#something').html(msg.d); it shows complete Json string. How do I reach to individual properties Thanks

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  • I'm new to OOP/PHP. What's the practicality of visibility and extensibility in classes?

    - by marcdev
    I'm obviously brand new to these concepts. I just don't understand why you would limit access to properties or methods. It seems that you would just write the code according to intended results. Why would you create a private method instead of simply not calling that method? Is it for iterative object creation (if I'm stating that correctly), a multiple developer situation (don't mess up other people's work), or just so you don't mess up your own work accidentally?

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  • Active directory logonCount is 0, though the user has logged in

    - by Arun
    For a user in active directory, the properties hold values for lastlogontime & lastlogontimestamp but the logoncount is 0. I am having only one domain controller in that domain. I found from surfing, that logonCount value of 0 indicates that the value is unknown. But I am totally confused with why it is unknown. Is that an issue with AD.

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  • Issues accessing an object's array values - returns null or 0s

    - by PhatNinja
    The function below should return an array of objects with this structure: TopicFrequency = { name: "Chemistry", //This is dependent on topic data: [1,2,3,4,5,6,7,8,9,10,11,12] //This would be real data }; so when I do this: myData = this.getChartData("line"); it should return two objects: {name : "Chemistry", data : [1,2,3,4,51,12,0,0, 2,1,41, 31]} {name : "Math", data : [0,0,41,4,51,12,0,0, 2,1,41, 90]} so when I do console.log(myData); it's perfect, returns exactly this. However when I do console.log(myData[0].data) it returns all 0s, not the values. I'm not sure what this issues is known as, and my question is simple what is this problem known as? Here is the full function. Somethings were hardcoded and other variables (notable server and queryContent) removed. Those parts worked fine, it is only when manipulated/retreiving the returned array's values that I run into problems. Note this is async. so not sure if that is also part of the problem. getChartData: function (chartType) { var TopicsFrequencyArray = new Array(); timePairs = this.newIntervalSet("Month"); topicList = new Array("Chemistry", "Math");//Hard coded for now var queryCopy = { //sensitive information }; for (i = 0; i < topicList.length; i++) { var TopicFrequency = { name: null, data: this.newFilledArray(12, 0) }; j = 0; TopicFrequency.name = topicList[i]; while (j < timePairs.length) { queryCopy.filter = TopicFrequency.name; //additional queryCopy parameter changes made here var request = esri.request({ url: server, content: queryCopy, handleAs: "json", load: sucess, error: fail }); j = j + 1; function sucess(response, io) { var topicCountData = 0; query = esri.urlToObject(io.url); var dateString = query.query.fromDate.replace("%", " "); dateString = dateString.replace(/-/g, "/"); dateString = dateString.split("."); date = new Date(dateString[0]); dojo.forEach(response.features, function (feature) { if (feature.properties.count > 0) { topicCountData = feature.properties.count; } TopicFrequency.data[date.getMonth()] = topicCountData; }); } function fail(error) { j = j + 1; alert("There was an unspecified error with this request"); console.log(error); } } TopicsFrequencyArray.push(TopicFrequency); } },

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  • What are cons if we use javascript to apply css property to that browser who do not support that pro

    - by metal-gear-solid
    What are cons if we use JavaScript to apply only CSS property to that browser who do not support that property by default? to keep my HTML semantic and keep free from Deprecated HTML. Is it against content, style and Behavior separation? How much it will effect to site accessibility, usability? What are cons? If I make accessible site then should i only use whatever i can do with pure css. shouldn't use JavaScript to apply CSS properties

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  • Entity Framework 4 - Delay Loading Expensive Fields

    - by JohnnyO
    I know this same question was asked for Entity Framework 1, but now that Entity Framework 4 has come out, and Microsoft claims that it provides all of the features of Linq to Sql + more, does Entity Framework now support lazy loading expensive properties? In Linq to Sql, this is extremely easy. There's a Delay Loaded option on any property (accessible through the Designer) that can simply be toggled on or off. Is there something similar in Entity Framework? Thanks

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  • Java - Problem with the classpath on Eclipse.

    - by Amokrane
    I'm trying to recompile a project I've been working on and I keep getting an error message when trying to load a property file: The system cannot find the path specified. I guess this has to do with the classpath. But I've added the path to the file in Properties- Java build path- Libraries (external class). I also checked the .classpath file generated by eclipse, and the path is really there! Why isn't Eclipse looking at the right path?

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  • C# menustrip designer

    - by Iceyoshi
    Hi, I'm not sure when this happened but when I was trying to edit a menustrip in my program (in the VS designer), I noticed that the menu items had be grouped or merged. Like: File Edit Format Insert ... Instead of being able to click each menu item and add sub-items to them in the designer, they all were grouped together so I couldn't edit the menu items separately, it's quite painful. I couldn't find any properties related to this, so how could I ungroup the menu items in the designer?

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  • ASP.NET MVC - Combine Json result with ViewResult

    - by elado
    Can I return a Json result that contains also a rendered view? I need it to return the new ID of a submitted form along with its HTML and some other properties. Also that can be helpful when I need to return two (or more) view results from one action inside a Json object. Thanks!

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  • Python meta programming question

    - by orokusaki
    I have a meta class MyClass which adds an attribute to a class based on some of the properties of the class's methods. When I subclass MyClass I want it to still have that attribute, and append to the attribute's value based on the sub-class's methods (ie, sub-classing extends the same attribute that the base's meta creates.). Can this be done via the bases argument passed to __new__(cls, name, bases, dct)?

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