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• Python - Why ever use SHA1 when SHA512 is more secure?

  - by orokusaki

  I don't mean for this to be a debate, but I'm trying to understand the technical rationale behind why so many apps use SHA1, when SHA512 is more secure. Perhaps it's simply for backwards compatibility. Besides the obvious larger size (128 chars vs 40), or slight speed differences, is there any other reason why folks use the former? Also, SHA-1 I believe was first cracked by a VCR's processor years ago. Has anyone cracked 512 yet (perhaps with a leaf blower), or is it still safe to use without salting?

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• overwriting arguments in t-sql functions

  - by chuck taylor

  I was playing around with some code and realized that it is possible to overwrite the argument to a t-sql function. i.e., create function someFn(@date date) as begin if @date is null set @date = getdate() will set @date to be today's date if the argument was null. This appears only to make any sense if t-sql is treating their arguments as references not values. I realized that I don't actually know what the t-sql rules are for cases like this and was hoping someone could elaborate what is going on here. (I don't ever recall seeing any value vs. reference discussion with respect to t-sql code for that matter actually..)

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• Drawing with GDI+ under IIS

  - by Zac

  I'm running a web application under IIS that we draw graphs with that are sent to the clients. We were previously running under iis6, while migrating to 2008 ( iis7 ) we have encountered some very weird issues with the graphing. I stumbled across the msdn docs for GDI+ stating that "GDI+ functions and classes are not supported for use within a Windows service." I suspect that my issues are probably related to further isolation of services http://msdn.microsoft.com/en-us/library/ms533798%28VS.85%29.aspx My question is how the heck are we supposed to draw graphics? Raw GDI? OpenGL - but doesn't that still require a DC?

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• Shortcut to get all private field names combined with && operator as a generated line of code?

  - by burak ozdogan

  Hi, Is it possible to use reflection when we write a code-template? I was just thinking if it is possible to write a piece of code-template that will return me a list of all private field in the class separated by && operator in Visual Stuudio? Let's say, I will enter "getAllPrivates&&" (or press a shortcut key) in the VS editor and it will return me something like this: private bool _privateFiel1 = false; private bool _privateFiel2 = true; private bool _privateFiel3 = false; private bool _privateFiel4 = false; private bool _privateFiel5 = true; // Here I press the shortcut or call the code-template and get his: _privateFiel1 && _privateFiel2 && _privateFiel3 && _privateFiel4 && _privateFiel5

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• Android app using 2.x APIs that will also run on 1.x

  - by Adam Haile

  I'm working on an Android app in which I would like to use multi-touch. However, I do not want to completely leave out those still running a 1.x OS phone. How do you program the app so that you can use the 2.x multi-touch APIs (or any other higher level API for that matter) and still allow it to gracefully degrade on 1.x systems. If you create a project in Eclipse for 1.x can you even still access the 2.x APIs? Basically I want it to show up in the marketplace and work on all 1.6 and higher phones and just allow access to the higher level functionality if available. Also, if anyone can point me to any data on the number of 1.x devices vs. 2.x devices in use, it would be greatly appreciated.

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• Opening up TCP Sockets in j2ee Webapplication

  - by Gvenez

  Hello, We have to communicate with a C++ component from a J2ee web application and my proposal involved using JMS server to communicate with the C++ component which is located on other machine. However the developer of the C++ component wants me to open up TCP/IP sockets from the webapplication and communicate over XML. My view is that socket programming in web application is error prone and will not scale well since there is a limited amount of sockets that can be opened up. Please let me have your architecture/design preference on using JMS vs TCP/IP sockets. Thank you

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• Determine version of dll linked against

  - by ron

  According to this article, the version of a referenced dll is embedded in the exe file. Using ProcExp, I can see that the runtime loaded dll is indeed the latest dll available on my machine, but I'm interested to know the linked version. As a side note, I built the project using the VS9 msbuild, and interested in the VC runtime (msvcr90.dll) version. In the VC9 redist folder it is 9.0.30729.1, runtime the .4926 is loaded. My questions are: Is there any tool with which I can extract the dll version linked to (from the dll/exe)? Which version does VS link to by default? The one found in its redist folder? Thank you.

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• Parsing C# code to evaluate expressions (basically, implementing Intellisense)

  - by halivingston

  I'm trying to evaluate C# code as it gets typed, think of it as if I'm trying to write an IDE. So a person types code, I want to find out what code did he just write: String x = ""; I want to now register that x is a type of String. And now everytime the user types x again, and I want to show him all the things he can do with x, basically like Visual Studio Intellisense. Will I need some lexers or parsers for this? Will that make it easier? I've heard VS 2010 has some features around this that Microsoft has released. Any ideas?

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• vcxproj file won't load into solution.

  - by John C

  We've just recently switched to VS 2010 and i had a solution that was working fine. This moring when i try to load the solution i get the error: "An item with the same key has already been added." This occurs when it is trying to load one of our main projects and it is not loaded. I assumed the problem was with my solution so i created a brand new empty solution and tried to load the same vcxproj and got exactly the same error. When i revert the project file to a previous version it works, so apparently it's something in the vcxproj file. However it also appears that i'm the only one in the office that is affected. So some combination of the vcxproj file and my computer seems to be the issue. Has anyone seen anything like this before? Any ideas on a solution? Thanks

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• Can you have a web application project produce multiple DLLS?

  - by chris

  I have a VS 2008 web application project that is getting large. My structure looks like: - WebRoot - Common/ - Foo/ - Bar/ - Baz/ so I end up with a single Webroot.dll that contains the code for common, foo, bar, and baz. Is it possible to set it so that I end up with common/ in webroot.dll, and code in foo ends up in foo.dll, bar in bar.dll, etc? Update: A couple of suggestions to move some stuff into class libraries. We already have a dozen or so separate class library projects as part of the solution; Foo, Bar and Baz contain nothing but web forms and the associated code-behinds, so moving them into separate class library projects is not feasible.

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• In Visual Studio 2010, intellisense isn't showing for long method signatures

  - by sohtimsso1970

  The problem is exactly as asked in the question title. When I'm typing in the text editor and referencing a public method that has a long signature (lots of parameters, usually 10 or more) the intellisense just stops working. It will sometimes flicker; other times it will not show at all. Only seen this happen with C#, but I don't use anything else. It might happen in VB too. Don't know. Anyone else seeing this? I've Googled for an hour but can't seem to iron it out. I've restarted VS, rebooted the machine, enabled/disabled intellisense in Tools - Options. NOTHING works.

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• How to build a Main Menu screen

  - by flow overstack

  Good day (and happy New Year), I'm a beginner VB.Net programmer using VS 2008. I'm planning a new winform project whose main form should look more or less like this: MAIN MENU 1. DoSomething1 2. DoSomething2 3. DoSomething3 ... Please choose: [TextBox] The user can either choose from the Main Menu (by clicking an item) or enter the item number in the textbox. For example, if the user clicks DoSomething3 in the Main Menu (or alternatively enters 3 in the textbox), another form will be opened and hide the main form. What would be the best way to implement it? Specifically, I would like to know how I make so that choosing from the menu and entering a number in the textbox fire the same event. Any help or hints will be appreciated.

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• Why Resource (.resx) file added on merely changing Form size and on adding button which is not resou

  - by Muhammad Kashif Nadeem

  1- Resource files suppose to be added on adding some resource in application like image or audio or video etc. But if I just change size of form a .resx file under that particular form. Changing size of form does not add any resource so why this .resx file. 2- I dropped a button on form and a resource file is included again this button is not some kind of resource, it is object created and having information in designer file. 3- A resource file added on dropping button on form but if I delete this resource file and run application it compile and run with NO error and button is still there. If this button has any relation with resource file then there must by some kind of compile or runtime error AND if .resx file has nothing to do with button then why it was added? I am using VS 2008. Thanks in advance for the help

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• Debug startup program behavior

  - by iceman

  I want to Debug a program called Freecall in my Windows 7 Professional laptop. Now it shows as a Startup item in "System Configuration" console. I tried to uncheck it in the Startup item and restart, but it keeps on adding itself to HKCU\Software|Microsoft\Windows\CurrentVersion\Run. i think its the same for Yahoo messenger..these programs keep on adding to startup even after I manually deleted the entry from the registry. I want to debug and find out if after starting the executable, the program writes to the registry. How can I do that? Is there a way I can run the binary in Sandbox mode? Are there any VS tools for this?

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• OnClickListener - x,y location of event?

  - by Mark

  Hi, I have a custom view derived from View. I'd like to be notified when the view is clicked, and the x,y location of where the click happened. Same for long-clicks. Looks like to do this, I need to override onTouchEvent(). Is there no way to get the x,y location of the event from an OnClickListener instead though? If not, what's a good way of telling if a motion event is a 'real' click vs a long-click etc? The onTouchEvent generates many events in rapid succession etc. Thanks

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• MVC 3 Razor PopUp Window

  - by Vipul

  I need to open a new pop up window on click of a button in a view. The new window should be redirect to a specific actionmethod in a specific controller. I also need to provide attributes for size of the new pop up window. I have been trying the following code: <input type="button" name = "ClickMe" Value="ClickMe" onclick= "javascript:window.open('/Home/Create/','Customer Search',height='window.screen.height - 100', width='200',left='window.screen.width - 250' ,top='10',status='no',toobar='no',resizable='yes',scrollbars='yes')"/> On click of button, nothing happens. I get following Javascript error: Line: 19 Char: 1 Error: Invalid argument. Code: 0 When I check the ViewSource of the HTML rendered, I find the line to be the one which is rendering the button. I am using Windows Vista with IE 7. I am working on MVC 3 with Razor Engine in VS 2010

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• Which one is better to have auto-implemented property with private setter or private field and property just getter?

  - by PLB

  My question may be a part of an old topic - "properties vs fields". I have situation where variable is read-only for outside class but needs to modified inside a class. I can approach it in 2 ways: First: private Type m_Field; public Type MyProperty { get { return m_Field; } } Second: public Type MyProperty { get; private set; } After reading several articles (that mostly covered benefits of using public properties instead of public fields) I did not get idea if the second method has some advantage over the first one but writing less code. I am interested which one will be better practice to use in projects (and why) or it's just a personal choice. Maybe this question does not belong to SO so I apologize in advance.

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• Declared Properties and assigning values with self

  - by Shaun Budhram

  I understand how declared properties work - I just need a clarification on when Objective C is using the accessor method vs. when it is not. Say I have a property declared using retain: @property (nonatomic, retain) NSDate *date; ... and later... @synthesize date If I say: date = x Is that calling the accessor method? Or is it just setting the variable? self.date = x This seems to call the accessor method (I think but I'm not sure, since it seems like the retain count is increasing). Can anyone clarify this issue? I'm curious because i have some variables that seem to become invalid before I need them (and I have to specifically call retain), and I suspect this is why.

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• calling resize on std vector of pointers crashed

  - by user11869

  The problem can be reproduced using VS 2013 Express. It crashed when internal vector implementation tried to deallocate the original vector. However, the problem can solved by using 'new' instead of 'malloc'. Anyone can shed some light on this? struct UndirectedGraphNode { int label; vector<UndirectedGraphNode *> neighbors; UndirectedGraphNode(int x) : label(x) {}; }; int main(int argc, char** argv) { UndirectedGraphNode* node1 = (UndirectedGraphNode*)malloc(sizeof(UndirectedGraphNode)); node1->label = 0; node1->neighbors.resize(2); return 0; }

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• In R draw two lines, with slopes double and half the value of the best fit line

  - by D W

  I have data with a best fit line draw. I need to draw two other lines. One needs to have double the slope and the other need to have half the slope. Later I will use the region to differentially color points outside it as per: http://stackoverflow.com/questions/2687212/conditionally-colour-data-points-outside-of-confidence-bands-in-r Example dataset: ## Dataset from http://www.apsnet.org/education/advancedplantpath/topics/RModules/doc1/04_Linear_regression.html ## Disease severity as a function of temperature # Response variable, disease severity diseasesev<-c(1.9,3.1,3.3,4.8,5.3,6.1,6.4,7.6,9.8,12.4) # Predictor variable, (Centigrade) temperature<-c(2,1,5,5,20,20,23,10,30,25) ## For convenience, the data may be formatted into a dataframe severity <- as.data.frame(cbind(diseasesev,temperature)) ## Fit a linear model for the data and summarize the output from function lm() severity.lm <- lm(diseasesev~temperature,data=severity) # Take a look at the data plot( diseasesev~temperature, data=severity, xlab="Temperature", ylab="% Disease Severity", pch=16, pty="s", xlim=c(0,30), ylim=c(0,30) ) title(main="Graph of % Disease Severity vs Temperature") par(new=TRUE) # don't start a new plot abline(severity.lm, col="blue")

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• Java generic Interface performance

  - by halfwarp

  Simple question, but tricky answer I guess. Does using Generic Interfaces hurts performance? Example: public interface Stuff<T> { void hello(T var); } vs public interface Stuff { void hello(Integer var); <---- Integer used just as an example } My first thought is that it doesn't. Generics are just part of the language and the compiler will optimize it as though there were no generics (at least in this particular case of generic interfaces). Is this correct?

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• Odd toString behavior in javascript

  - by George

  I have this small function that's behaving oddly to me. Easy enough to work around, but enough to pique my curiosity. function formatNumber(number,style) { if (typeof style == 'number') { style = style.toString(); } return (number).format(style); } The return format part is based on another function that requires the style variable to be a string to work properly, so I'm just checking if style is a number and if it is to convert it to a string. When the function above is written as is, the format function format doesn't work properly. However when I write it as simply: return (number).format(style.toString()); Everything works. Is there a difference between putting the .toString function inside the format call vs performing it before hand and setting it as the variable style?

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• Hyperlinks in VS2008 Test Result Details

  - by Red XIII

  In case when resulting string in "Test Result Details" (TRD) is very long, the Visual Studio 2008 crashes. I fixed this by sending the result data into a file. There is a problem, however, because there isn't a simple way to open such file. Of course, I can manually open folder and then the file, but it isn't very efficient. Now, to the questions part. Is there a possibility to include in the "Error Message" part of TRD a hyperlink to a file? (something similar to what we can already find in the stack trace part) If not, is there any way to add such functionality (easy opening of a file) to TRD? If not, are there any ways to expand the default reporting of VS? Thanks for any help.

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• How do I create an editable databound combo box in a DataGrid in WinForm

  - by signaldev235

  I have a noob question. I have a WinForm (.net 2.0 in VS 2008) on my from I have a DataGrid One of the fields in that datagrid is a combo box that is bound to a separate table. this works, but I am unable to edit or add, I cannot add a value that is not on the list. I am looking to create a lookup box for lack of a better term. The form is for Parts Order Entry In the data Grid Data Source is PartsOrder_table, the Work order Field is a int in the PartsOrder_table, and the combo box is bound to the WorkOrder_table. The WorkOPRder_Table has WorkOrd_ID int and WrkOrd nvarchar(10) the Combo Box Data Source is WorkOrd_Table Display Member is WorkOrd Value Member is WorkOrder_ID This works great with the problem that I cannot add or select anything not in WorkOrder_table. Any Help would be greatly appreciated. Thanks

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• jQuery slider - set background color to show desired range

  - by David

  Howdy, I'm setting up a Filament Group jQuery UI slider and using it in a gradebook. We need to allow teachers to set a desired background range (to show the desirable values vs. the actual value for a given grade). I'm hoping to set a shaded area (as shown in this picture) that would indicate to people viewing the slider which values are desirable. If the handle is within the desired ranges, then the value is satisfactory. If the handle is out of the background shaded range, then some changes may need to happen. Any suggestions on how to accomplish this? Based on what I've experimented with using Firebug, it looks like a <div class="ui-slider"> is setup, but the values inside of it don't seem to allow setting background-colors (only the div allows for that). Thanks for your help.

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