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• What are the benefits of using properties internally?

  - by cyclotis04

  Encapsulation is obviously helpful and essential when accessing members from outside the class, but when referring to class variables internally, is it better to call their private members, or use their getters? If your getter simply returns the variable, is there any performance difference?

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• rename keys in a dictionary

  - by user366660

  i want to rename the keys of a dictionary are which are ints, and i need them to be ints with leading zeros's so that they sort correctly. for example my keys are like: '1','101','11' and i need them to be: '001','101','011' this is what im doing now, but i know there is a better way tmpDict = {} for oldKey in aDict: tmpDict['%04d'%int(oldKey)] = aDict[oldKey] newDict = tmpDict

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• jQuery Prototype conflict, alternative solutions

  - by lbolognini

  I have a problem as I'm conditionally including the Prototype-based Lightbox script for IE6 as it works better than the jQuery plugin. Of course the two libraries conflict but the official solution is not really feasible for me as i would have to replace tons of $ with the alternative no-conflict syntax. Is there any other solution for me, keeping in mind that in my case it would be easier to have Prototype work nicely with jQuery than the other way around?

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• What is a good FAT file system for ARM7-TDMI

  - by Seidleroni

  I'm using the ARM7TDMI-S (NXP processor) and I need a file system capable of reading/writing to an SD card. There are so many available, what have people used and been happy with? One that requires the least amount of setup is best - so the less I have to do to get it started (i.e. write device drivers to NXP's hardware) the better.

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• How can I "merge" or "flatten" results from a query which returns multiple rows into a single result

  - by dsm

  I have a simple query over a table, which returns results like the following: id id_type id_ref 2702 5 31 2702 16 14 2702 17 3 2702 40 1 2702 26 4 And I would like to merge the results into a single row, for instance: id concatenation 2702 5,16,17,40,26:31,14,3,1,4 Is there any way to do this within a trigger? NB: I know I can use a cursor, but I would really prefer not to unless there is no better way.

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• Reliable email encoding.

  - by Seba Illingworth

  What are the most reliable encodings for sending email? I had some problems recently with .NET's System.Net.Mail default of quoted-printable ('=0D=0A' scattered throughout the message). So I changed to iso-8859-1 for the body (set via alternative views), and 7bit for transfer (and base64 for embedded resources). Are there the better choices?

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• What tools do you use to plan and draw a database structure = tables, relationship

  - by EugeneP

  Modeling tool or just a visual tool for drawing. In fact I only need to draw and later I'll transform the picture into sql by hand to better control the process.

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• Detecting use after free() on windows. (dangling pointers)

  - by The Rook

  I'm trying to detect "Use after free()" bugs, otherwise known as "Dangling pointers". I know Valgrind can be used to detect "Use after free" bugs on the *nix platform, but what about windows? What if I don't have the source? Is there a better program than Valgrind for detecting all dangling pointers in a program? A free and open source would be preferred , but I'll use a commercial solution if it will get the job done.

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• NullDisplayText in markup or ISNULL(field, 0) in SQL?

  - by abatishchev

  Which approach is better to use: BoundField.NullDisplayText isn't set. NULL-case is foreseen in SQL query, i.e. SELECT ISNULL(amount, 0) FROM table or BoundField.NullDisplayText is set, e.g. "0.00 %". NULL-case isn't foreseen in SQL query, i.e. SELECT amount FROM table What do you think?

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• Powerbuilder ressources

  - by afilatun

  I'm recently working in a company where we use PowerBuilder extensively. The only documentation or ressources we have access to is some basic course saying things like "Do A, then B and you'll get C". I was wondering if there is some better crash courses or tutorials for this language on the net or somewhere else which actually explain something instead of simply taking me by the hand.

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• Chat client with GWT

  - by user284016

  What would be the best way to create a JS chat client with GWT? The bit that I'm having trouble with is the persistence and transfer of the messages. Should I store the messages in a DB and check the db for new messages? Is there a much better way to do this?

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• Using a user-defined type as a primary key

  - by Chris Kaminski

  Suppose I have a system where I have metadata such as: table: ====== key name address ... Then suppose I have a user-defined type described as so: datasource datasource-key A) are there systems where it's possible to have keys based on user-defined types? B) if so, how do you decompose the keys into a form suitable for querying? C) is this a case where I'm just better off with a composite primary key?

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• Can I get the name of the currently running function in javascript?

  - by sprugman

  Is it possible to do this: myfile.js: function foo() { alert(<my-function-name>); // pops-up "foo" // or even better: "myfile.js : foo" } I've got the dojo and jquery frameworks in my stack, so if either of those make it easier, they're available.

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• Does rails do a rollback if I use begin...rescue?

  - by codeman73

  I'd like to add a begin...rescue block to one of my controllers create method, in order to log better info and construct the correct error message to return to the client. Does the rescue in any way 'interrupt' the rollback process? I'm assuming rails automatically does a rollback. When does it happen? Has it already happened by the time I get in the rescue clause? I'm using mySQL on Dreamhost and I think they use innoDB.

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• Best JSF framework/library for "conversation state"

  - by stacked

  What do people think is the best JSF framework or library for a saving state longer than request scope (but w/o using session scope) that is backbutton/new window safe -- i.e. you have a "wizard"/multi-page form. For example, MyFaces has the 'SaveState' tag (http://bit.ly/8QHmX5) that allows you to maintain state across pages by saving state in the view's component tree. Any comments on SaveState (pros/cons) or suggestions for any better framework or library for this capability?

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• Is or Are to prefix boolean values

  - by Brian T

  When naming a boolean, or a function returning a boolean it's usual to prefix with 'is' e.g. isPointerNull isShapeSquare What about when refering to multiple items, should it be: arePointersNull or isPointersNull areShapesNull or isShapesNull I can see arguments for both; is offers consistency and perhaps slightly better readability, are makes the code read in a more natural way. Any opinions?

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• Best practices for an internal webservice

  - by sankara

  Experience says that using WSDL-SOAP based webservice for internal consumption is an overkill. There are too many service-based POJO classes that when let into the system complicates it way too much. One option would be use adapter pattern, map the request/response objects to internal domain classes and . But is it even required? Is there a better approach? What are your suggestions?

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• How to export some data into .rtf or .doc?

  - by Narek

  Say I have created a GUI (Qt) that operates with some data(text+image). How I can export that data in one of listed formates in title. I guess it is better to export info .rtf as it is free cross-platform formt(??), isn't it?

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• Compare DateTime ticks on two machines

  - by vani

  Is it a viable option to compare two FileInfo.CreationTimeUtc.Ticks of two files on two different computers to see which version is newer - or is there a better way? Do Ticks depend on OS time or are they really physical ticks from some fixed date in the past?

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• How to resume an ftp download at any point? (shell script, wget option)?

  - by Dave

  hi! i want to download a huge file from an ftp server in chunks of 50-100MB each. At each point, i want to be able to set the "starting" point and the length of the chunk i want. i wont have the "previous" chunks saved locally (ie i cant ask the program to "resume" the downlaod). what is the best way of going about that? i use wget mostly, but would something else be better?

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• How do I use Perl's chdir operator?

  - by T. Gruhn

  In ksh, I'd use cd /usr/src/sys How should I write it in Perl? A conversion such as cd /usr/src/sys ---> chdir '/usr/src/sys' Maybe the following would be better: execute "chdir '/usr/src/sys' "

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• Unit tests and fixtures

  - by Wizzard

  We have a bunch of unit tests which test a lot of webpages and REST API services. Currently when our tests run it pulls from these pages live but this can take ages to run sometimes, and it also feels like the tests should be testing more of our code - not just relying on them being up and responding (if that makes sense..). Is it better practice to save a valid api response and with the unit tests load this in during setup? Thoughts?

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• WCF for live images communication?

  - by Benny

  I have two applications, and one is keeping sending live images to the other and it need to be long-running. Is WCF suitable for this scenario? or if there is any better alternative for this communication?

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• What tools for server side application performance testing you suggest?

  - by Artic

  What tools for server side application performance testing you suggest? Have an application server and need to test it performance. Not sure issue is server side. Need to investigate. NB:Better to have convenient UI

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• what's the difference between GdipBitmapLockBits and CreateDIBSection

  - by Naveen

  GdipBitmapLockBits works on pBitmaps, requires locking ? CreatDIBSection gives you a DIBsection, doesn't require locking ? which method is better for working with raw pixel data ? Here are two implementations for finding the difference between two images using each method.

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