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• simple python file writing question

  - by aharon

  I'm learning Python, and have run into a bit of a problem. On my OSX install of Python 3.1, this happens in the console: >>> filename = "test" >>> reader = open(filename, 'r') >>> writer = open(filename, 'w') >>> reader.read() '' >>> writer.write("hello world\n") 12 >>> reader.read() '' And calling more test in BASH confirms that there is nothing in test. What's going on? Thanks.

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• Typed Arrays in Gecko 2: Float32Array concatenation and expansion.

  - by janesconference

  Hi all, I'm a bit confused with Javascript Typed Arrays. What I have several *Float32Array*s, that have no concat method. I'd like to concatenate them all inside another Float32Array, but: as I said before, there is no concatenation method if I try to write past the array length, the array is not expanded (aka this won't work - please note that event.frameBuffer and buffer are both Float32Array and that I don't know what the final length of my buffer will be): var length_now = buffer.length; for (var i = 0; i < event.frameBuffer.length; i += 1) { buffer [length_now + i] = event.frameBuffer[i]; } The only solution I found is to copy the Float32Array in a regular array, that's definitely not what I want. How would you do, stackoverflowers?

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• How can you write a function that accepts multiple types?

  - by matthy

  I have a function that should work on int[] and on String[] now i have made the same function with a int parameter and an String parameter however if it has to go this way its a bit copy paste work and doesn't look very organized is there a way to solve this and put these 4 functions in 2? static public void print(String s) { System.out.println(s); } static public void print(int s) { System.out.println(s); } static public void printArray(String[] s) { for (int i=0; i<s.length; i++) print(s[i]); } static public void printArray(int[] s) { for (int i=0; i<s.length; i++) print(s[i]); } Thanks Matthy

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• w3c validation error with utf-8

  - by ian

  When I try to validate a certain page I get the below error: Sorry, I am unable to validate this document because on line 136 it contained one or more bytes that I cannot interpret as utf-8 (in other words, the bytes found are not valid values in the specified Character Encoding). Please check both the content of the file and the character encoding indication. The error was: utf8 "\xFF" does not map to Unicode What exactly does this mean and how can I find out what character is causing the problem? The page is generated dynamically in PHP and a bit large and I am not sure what to look for.

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• Choosing between YUI Charts or Google Visualization API

  - by r2b2

  Hello , I'm a bit stuck with which charting library I will use in my project. Im stuck with this two (but also open for other suggestions) For YUI Charts : Pro : - Very robust and configurable Cons : - Uses flash 9 , which might potentially be inaccessible for users without up to date flash version - Does not support export to image (for flash versions < 10 only) For Google Visualization API pros: - small file size for the libraries, - can be exported to static image charts (via separate API call) Cons - limited configuration options So there, please help me decide. YUI charts has the edge over configuration options but Google Visualization API has the edge in terms of accessibility as it uses SVG to render the grapsh instead of Flash. For users that are hand-cuffed by corporate IT prohibitions , they cant just upgrade their Flash version and the page will not work. Thanks!

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• How can I put text from a multi-line text box into one string?

  - by Kevin van Zanten

  Dear reader, I'm faced with a bit of an issue. The scenario is that I have a multi-line text box and I want to put all that text into one single string, without any new lines in it. This is what I have at the moment: string[] values = tbxValueList.Text.Split('\n'); foreach (string value in values) { if (value != "" && value != " " && value != null && value != "|") { valueList += value; } } The problem is that no matter what I try and what I do, there is always a new line (at least I think?) in my string, so instead of getting: "valuevaluevalue" I get: "value value value". I've even tried to replace with string.Replace and regex.Replace, but alas to no avail. Please advise. Yours sincerely, Kevin van Zanten

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• Is removing unused functionality a bad thing?

  - by Andrew Grimm

  Is it possible for YAGNI to apply in the past tense? You created some functionality, it was used a little bit a while ago, but you aren't using it any more, and you don't want to maintain it, so you'd rather delete it. Is getting rid of unused or rarely-used functionality neccessarily a bad thing? Background: I use source control, so if I need the functionality again, I can get it. I'm the only user of my software (I'm a bioinformatician analyzing a data set). One scenario where I came across this was that I was using inheritance, with a parent class, and two child classes. One was handling files generated by 454 sequencing (next-generation sequencing), and the other was handling files generated by Sanger sequencing (previous-generation sequencing). I was actively maintaining the latter, but not the former. Maybe my mistake was using inheritance rather than composition, but that's a slightly different story.

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• What is the best practise to create MSI with some other child MSI as prerequisite?

  - by sankar

  Currently we are using Innosetup as a bootstrapper to install the MSI prerequisites. It makes bit complex to maintain the setup. I found that burn tool which may help us to resolve this issue by having a single setup to install whatever we need. I could not find either documentation or sample for this tool. Is anyone have idea about this? or you can give me the alternate solution if you have. Looking for the alternate soltuion for the actions that we do with ISS bootstrapper now: Extract the files (Main setup, Prerequisite setup) Need to ensure prerequisites status and install on demand. Start main install.

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• Brew install pyqt mavericks

  - by user3722876

  I have some trouble installing PyQt on my Mac. HOMEBREW_VERSION: 0.9.5 ORIGIN: https://github.com/Homebrew/homebrew.git HEAD: d8af29d63a5b94ffee863788210c3a895315035f HOMEBREW_PREFIX: /usr/local HOMEBREW_CELLAR: /usr/local/Cellar CPU: quad-core 64-bit sandybridge OS X: 10.9.3-x86_64 Xcode: 5.1.1 CLT: 5.1.0.0.1.1396320587 Clang: 5.1 build 503 MacPorts/Fink: /opt/local/bin/port X11: 2.7.6 => /opt/X11 System Ruby: 2.0.0-451 Perl: /usr/bin/perl Python: /opt/local/bin/python => /opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 Ruby: /usr/bin/ruby sip installation ok qt installation ok brew install pyqt => make 1 error generated. make[1]: *** [qtlib.o] Error 1 1 error generated. make[1]: *** [siplib.o] Error 1 make: *** [all] Error 2 No idea what's happening...

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• What considerations should be made for a web app to be released on a cloud hosted system?

  - by Rhubarb

  I have a web app that is primarily a WordPress app, but it pulls content from a Django app, simply by calling a service that uses Django models. My understanding of cloud computing is a bit vague. If the site needs to scale up with short notice, does the cloud provider (Amazon, Rackspace, whomever) simply spin up new instances (copies) of my initially configured server? How is state managed between all of them? Are there any good primers on this subject? It's hard to find much out there without getting caught up in the marketing.

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• Cannot loop through Excel 2003 files in SSIS 2008

  - by Techspirit

  Hi, I am trying to execute a SSIS 2008 package on a 64-bit OS and import Excel 2003 files to SQL Server 2008. I have created an OLEDB Connection to the Excel file with a Connection String that retrieves the Excel file from a variable, inside the ForEach Loop Container. The Run64BitRunTime is set to false. I am not able to edit the SQL Command on the OLEDB Source in the Data Flow task. It returns an error : Error 2 Validation error. Load List Staged Table: Load List Staged Table: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "List OLEDB to Excel" failed with error code 0xC0202009. There may be error messages posted before this with more information on why the AcquireConnection method call failed. 0 0 Appreciate any help.

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• C: Expanding an array with malloc

  - by Mal Ock

  I'm a bit new to malloc and C in general. I wanted to know how I can, if needed, extend the size of an otherwise fixed-size array with malloc. Example: #define SIZE 1000 struct mystruct { int a; int b; char c; }; mystruct myarray[ SIZE ]; int myarrayMaxSize = SIZE; .... if ( i > myarrayMaxSize ) { // malloc another SIZE (1000) elements myarrayMaxSize += SIZE; } The above example should make clear what I want to accomplish. (By the way: I need this for an interpreter I write: Work with a fixed amount of variables and in case more are needed, just allocate them dynamically)

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• iphone: mechanical drawing & layers

  - by d_CFO

  I need to do a bit of mechanical drawing. I can (1) display the part’s image, [self.view addSubview:thePartAsImageView]; (2) implement two sliders (one horizontal for part’s width and one vertical for part’s height), heightSlider.transform = CGAffineTransformRotate(heightSlider.transform, 270.0/180*M_PI); (3) display the corresponding values (dimensions) as the user moves the sliders, and even (4) draw the dimensioning lines with arrowheads: CGContextAddLineToPoint What I can’t do is (5) remove those lines after I’ve drawn them. What I want is “if userTouchedTheHorizontalControl then eraseTheLinesForTheVerticalControl.” If I understand correctly – first, that Quartz composites everything to a single layer, and second, that CALayer, GeekGameBoard and so on only work on Mac -- then I have to do something different. But isn’t there something I can do other than switch to Open GL?

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• ASP.NET control event handler not firing on postback?

  - by Polaris878

  I have a control which has an ImageButton which is tied to an OnClick event... Upon clicking this control, a postback is performed and the event handler is not called. AutoEventWireup is set to true, and I've double checked spelling etc.... We haven't touched this control in over a year and it has been working fine until a couple of weeks ago. We have made changes to controls which load this control... so I'm wondering, what kind of changes could we have made to stop this event handler from being called? There is quite a bit of Javascript going on, so this could be the culprit too... Edit: Some clarification... we are dynamically loading the parent control of the ImageButton in the OnLoad event of the page... if that makes sense.

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• Oracle on Mac OS X Snow Leopard

  - by Steve

  Hi, I am trying to install oracle on snow leopard using these guidelines. http://blog.rayapps.com/2009/09/14/how-to-install-oracle-database-10g-on-mac-os-x-snow-leopard/ There is a step in the installation, where I have to change netca and dbca such that it runs in 32 bit mode. Can someone please tell me how to do it. I have pasted the exact step below –Now you need to modify $ORACLE_HOME/jdk/bin/java script and change “…java -Xbootclasspath…” to “…java -d32 -Xbootclasspath…”--

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• Swapping UIImages causing 'unrecognized selector sent to instance' ?

  - by user158103

  Error: [__NSCFDate drawAtPoint:]: unrecognized selector sent to instance 0xd251e0 Termininating app due to uncaught exception 'NSInvalidArgumentException' Scenario: for the most part this works. But I notice this error, even on the simulator, when I swapping UIImages, slowly, but consistently. For example, I have a retained reference to a UIImage that im drawing. By the click of a picker control I am changing the face image (this occurs in another view-controller). I can consistently recreate this error by continuously changing the faces. It usually crashes at about the 4th swap or more. My theory: It's not loading the image, therefore the image reference is nil. I know ive read a bit about UIImage being cached, so I wouldnt think im running out of memory. Any ideas? Thanks!

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• How do I consume a COM+ local server from C#?

  - by Mystere Man

  I have a web application from a company that has gone out of business. We're looking to extend the web app a bit with some asp.net functionality. The web app was written as an ISAPI application in Delphi, and uses COM+ to talk to the SQL Server and handles things like session management and authentication. So, in order to get the current user and other details, I have to use the undocument COM+ components. I was able to dig out the type library and auto generated IDL, but at this point i'm lost in creating a .NET proxy class for this. Is there a way to autogenerate the .net COM+ proxy either from the .dll itself (extracting the typelib info) or from the IDL? Note: These seem to be simple COM style objects hosted in COM+ servers, no subscriptions or transaction monitoring..

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• Replacing a class with Mono.Cecil

  - by icktoofay

  Say I have assembly A. It was modified with Mono.Cecil a little bit. Now say I have assembly B. It has a class named SomeClass. Assembly A also has a class named SomeClass. Now I want to replace SomeClass from assembly A with the one in assembly B. I tried a few things, but I know that for one of my attempts, it actually remapped a method call like this: Console.WriteLine("Test."); ...into this: int.WriteLine("Test."); That can't be right. What is the correct way to replace a class with Mono.Cecil?

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• CruiseControl modificationSet fails to execute when svn points to a url

  - by Woot4Moo

  In my current CruiseControl setup I am running the following target: <modificationset quietperiod="30"> <svn RepositoryLocation="http://my/url/repo/trunk" /> </modificationset> I do a simple checkin of a blank text file and subsequently the messages I receive in the CruiseControl log are as follows: [cc]May-13 15:53:56 Project - Project mine: bootstrapping [cc]May-13 15:53:56 jectController- mine Controller: build progress event: bootstrapping [cc]May-13 15:53:56 Project - Project mine: checking for modifications [cc]May-13 15:53:56 jectController- mine Controller: build progress event: checking for modifications [cc]May-13 15:53:59 Project - Project mine: No modifications found, build not necessary. [cc]May-13 15:53:59 Project - Project mine: idle [cc]May-13 15:53:59 jectController- connectfour Controller: build progress event: idle [cc]May-13 15:53:59 Project - Project mine: next build in 1 minutes [cc]May-13 15:53:59 Project - Project mine: waiting for next time to build [cc]May-13 15:53:59 jectController- mine Controller: build progress event: waiting for next time to build Tortoise: TortoiseSVN 1.6.8, Build 19260 - 32 Bit , 2010/04/16 20:20:11 CruiseControl: 2.8.3

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• Sql Server 2008 Cross-database table linking (relationships)

  - by Alex

  Hi guys, I have a bit of an issue, and to be honest I don't think there's an answer, but I'll give it a try anyway. So I have two databases [A]-Company and [B]-Product. Both databases have a Country table which is then linked to other tables in each individual database. The problem is that the data between the two Country tables is a complete duplicate. So, I essentially have to duplicate some of the relationships in each database, and maintenance on top of that is just difficult... So, I'm curious is there a way to create a cross-database relationship between tables so I can have only one set of Country+Helper tables that govern both databases? Thanks in advance!

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• Linux / C++: Get the IP Address of local computer

  - by BlaM

  This Question is almost the same as the previously asked Get the IP Address of local computer-Question. However I need to find the IP address(es) of a Linux Machine. So: How do I - programmatically in C++ - detect the IP addresses of the linux server my application is running on. The servers will have at least two IP addresses and I need a specific one (the one in a given network (the public one)). I'm sure there is a simple function to do that - but where? [EDIT] To make things a bit clearer: The server will obviously have the "localhost": 127.0.0.1 The server will have an internal (management) IP address: 172.16.x.x The server will have an external (public) IP address: 80.190.x.x I need to find the external IP address to bind my application to it. Obviously I can also bind to INADDR_ANY (and actually that's what I do at the moment). I would prefer to detect the public address, though.

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• How to schedule daily backup in MSSQL Server 2008 Web Edition

  - by Xenon

  In MSSQL Management Studio I created a maintenance plan but it won't work Error is; "Message Executed as user: LITESPELL-19C34\Administrator. Microsoft (R) SQL Server Execute Package Utility Version 10.0.1600.22 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. The SQL Server Execute Package Utility requires Integration Services to be installed by one of these editions of SQL Server 2008: Standard, Enterprise, Developer, or Evaluation. To install Integration Services, run SQL Server Setup and select Integration Services. The package execution failed. The step failed." But in Microsoft page http://www.microsoft.com/sqlserver/2008/en/us/web.aspx in Automate tasks and policies section it is written that backup can be scheduled in this edition but how?

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• change email address format with minimal disruption

  - by femi

  Hello, all the email addresses in my organization are in the format [email protected]. this was started when we were a small organization. Now we have grown and need to use something a bit more professional like [email protected] how can this change be implemented with minimal disruption? We currently only use smarteremail. Could recieving ONLY with the old and replying with the new be a solution..till we wean our recipients off the old email address? Any suggestions are welcome. How will moving to exchange help in this instance? Can it be configured to automatically send out using a different address? Thanks

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• Table View rotate, but not properly (shape change)

  - by Pencrace

  Hello everyone, Here is the thing. I have a ViewController which contain a view in full window. And the program run in landscape mode. I want to put an UITableView over the full screen view but only on right half part of the screen. So I add a UITableView in my view controller, I used the Interface Builder in order to set the Table View in the upper half of the screen so It will be on the right part in LandscapeLeft mode. I searched for on a lot of forum how to rotate my Table View. And so it does... except, It get stuck on the upper half of the landscape mode, it should stick on the right half. I'm not a iPhone coder since long, so I'm a bit confused on how to solve this problem. Do you have any idea on how to resize or make the TableView rotate properly. Thanks,

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• Is Win32_PerfFormattedData_PerfDisk_PhysicalDisk missing from WMI in Vista?

  - by Martin

  From what I understand, the following script should work in Windows XP and higher, but it doesn't work for me in Vista Business 32-bit Service Pack 2. Thus far I have been very unsuccessful googling for information about this performance class. strComputer = "." Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2") Set colApps = objWMIService.ExecQuery("Select * from Win32_PerfFormattedData_PerfDisk_PhysicalDisk") For Each objApp in colApps Wscript.Echo objApp.Caption Next Does this WMI class simply not exist in Vista? If it is just me, is there a way to fix WMI? I have already tried running winmgmt /resetrepository and winmgmt /resyncperf and neither helps.

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