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  • Can ggplot2 work with R's canvas backend

    - by Casbon
    Having installed canvas from here http://www.rforge.net/canvas/files/ I try to plot: > canvas('test.js') > qplot(rnorm(100), geom='histogram') stat_bin: binwidth defaulted to range/30. Use 'binwidth = x' to adjust this. Error in grid.Call.graphics("L_setviewport", pvp, TRUE) : Non-finite location and/or size for viewport >

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  • Why One-to-one relationship dosen't work?

    - by eugenn
    I'm trying to create a very simple relationship between two objects. Can anybody explain me why I can't find the Company object via findBy method? class Company { String name String desc City city static constraints = { city(unique: true) } } class City { String name static constraints = { } } class BootStrap { def init = { servletContext -> new City(name: 'Tokyo').save() new City(name: 'New York').save() new Company(name: 'company', city: City.findByName('New York')).save() def c = Company.findByName('company') // Why c=null????! } def destroy = { } }

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  • Extend an entity to create a computed observable that requires a navigation property

    - by Julianyus
    I'm trying to extend an entity to create a computed observable that requires a navigation property: app.domain.indicador = function () { this.ValorMetaActual = ko.computed({ read: function () { console.log(this.ValoresMeta); //navigation property: undefined return 0; }, deferEvaluation: true }, this); }; The problem is that when the observable is created, the navigation property does not yet exist. What could I do to fix this?

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  • on facebook, how do i authenticate an application, using JavaScript?

    - by GilShalit
    I can only find samples using php or curl. I want to do something like https://graph.facebook.com/<app_id>/accounts/test-users? installed=true&permissions=read_stream and the response is: { "error": { "type": "OAuthException", "message": "An access token is required to request this resource." } } as well is should... so how do i get the access token in JavaScript (using the JavaScript SDK obviously). thanks!

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  • jquery ajax callback out of the function scope

    - by vasion
    function checkauth(){ jQuery.getJSON("/users/checkauthjson", null, function(xhr){ if(xhr.success){ return true;}else{ return false;} }); } Obviously, that does not work, but it illustrates what i want to achieve. I want checkauth to return a value which is checked against an ajax server script. How do i do this?

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  • In asp classic: How can I make sure that a variable can be cast as an int?

    - by Tchalvak
    The following function was suggested to me: ' Defines a forced casting function, which "casts" anything that it can't detect as a number to zero. Function MakeInteger(val) If IsNumeric(val) Then MakeInteger = CInt(val) Else MakeInteger = 0 End If End Function Unfortunately there appear to be some things that return true for IsNumeric() but still can't be cast as an int. Is there any better check to use?

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  • Approaching Java from a Ruby perspective

    - by Travis
    There are plenty of resources available to a Java developer for getting a jump-start into Ruby/Rails development. The reverse doesn't appear to be true. What resources would you suggest for getting up-to-date on the current state of java technologies? How about learning how to approach DRY (don't repeat yourself) without the use of metaprogramming? Or how to approach various scenarios where a ruby developer is used to passing in a function (proc/lambda/block) as an argument (callbacks, etc)?

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  • How to validate SSL certificate chain in ruby with net/http

    - by maledictus
    How can I verify the certificates of a site like https://processing.ukash.com/ in ruby with net/http? https = Net::HTTP.new('processing.ukash.com', 443) https.use_ssl = true https.verify_mode = OpenSSL::SSL::VERIFY_NONE Works so far, but how do I verify that it's the right cert now? I saved the certificate from within firefox, but the resulting .pem file has many certificates in it and net/http doesn't seem to like it.

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  • C++ compilation error when passing a function into remove_if

    - by garsh0p
    So here's a snippet of my code. void RoutingProtocolImpl::removeAllInfinity() { dv.erase(std::remove_if(dv.begin(), dv.end(), hasInfCost), dv.end()); } bool RoutingProtocolImpl::hasInfCost(RoutingProtocolImpl::dv_entry *entry) { if (entry-link_cost == INFINITY_COST) { free(entry); return true; } else { return false; } } I'm getting the following error when compiling: RoutingProtocolImpl.cc:368: error: argument of type bool (RoutingProtocolImpl::)(RoutingProtocolImpl::dv_entry*)' does not matchbool (RoutingProtocolImpl::*)(RoutingProtocolImpl::dv_entry*)' Sorry, I'm kind of a C++ newb.

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  • Neccessity of push and pop operands on CPUs

    - by Hawken
    Why do we have commands like push and pop? From what I understand pop and push are basically the same as doing a (mov then add) and (sub then mov) on esp respectively. For example wouldn't: pushl %eax be equivalent to: subl $4, %esp movl %eax, (%esp-4) please correct me if stack access is not (%esp-4), I'm still learning assembly The only true benefit I can see is if doing both operation simultaneously offers some advantage; however I don't see how it could.

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  • Database concurrency issue in .NET application

    - by MC.
    If userA deleted OrderA while userB is modifying OrderA, then userB saves OrderA then there is no order in the database to be updated. My problem is there is no error! The SqlDataAdapter.Update succeeds and returns a "1" indicating a record was modified when this is not true. Does anybody know how this is supposed to work, thanks.

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  • Convert byte to boolean string in HyperLinkField.DataNavigateUrlFormatString

    - by abatishchev
    I have a asp:GridView with a HyperLinkField. It's DataNavigateUrlFormatString property is set to View.aspx?id={0}&isTechnical={1} Select command of appropriate SqlDataSource returns columns of type INT and BYTE (from SQL Server 2008). So displayed string becomes something like View.aspx?id=1&isTechnical=1. But I want to display isTechnical=true|False, i.e. Convert.ToBoolean(row["isTechnical"]).ToString().ToLowerInvariant(). How to implement such conversion in page markup?

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  • AJAX Calendar extender select month and year

    - by nCdy
    Is it real and how can I think about it. To make so the user will select only the month and year, not date, because he need a period on full month, not some date. here is simple control ... <asp:TextBox ID="TextBox3" runat="server" /> <asp:CalendarExtender ID="TextBox3_CalendarExtender" runat="server" Enabled="True" TargetControlID="TextBox3" />

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  • Prototype set selected option based on other select

    - by xain
    Hi, how can I "copy" the selected option between two s that have the same options using prototype ? I tried getting the selected option from the "master" combo using function getSelectedArea() { $$('#areacont1 option').find(function(ele){return !!ele.selected}) } which returns null And setting the second combo using var c2ROptions = $$('select#areacont2 option') c2ROptions[getSelectedArea()].selected = true That obviously doesn't work because the function returns null. Any hints? Thanks.

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  • Detecting Enter KeyPress on VB.NET 2008

    - by Tareq
    I am using 3.5 framework of VB.NET 2008. I have some textboxes in my form. I want the tab like behavior when my user presses ENTER on one of my textboxes. I used the following Code: Private Sub txtDiscount_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtDiscount.KeyPress If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then SendKeys.Send("{TAB}") e.Handled = True End If End Sub But It doen't work for me. Please give me a solution.

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  • Django model help

    - by dotty
    Does anyone have any clue why this doesn't work as expected. If i use the python shell and do team.game_set or team.games It returns an error AttributeError: 'Team' object has no attribute 'game' If i create a Game object and call game.home_team it returns the correct team object Heres my model class Team(models.Model): name = models.CharField(blank=True, max_length=100) class Game(models.Model): home_team = models.ForeignKey(Team, related_name="home_team")

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