[Haskell-cafe] Having trouble with zip12..

[Paul Visschers]

You're zipping 12 lists here, so how about testing each list
individually? This will narrow down the problem considerably.

Michael Feathers wrote:
> 
> 
> I have some code that looks like this and I'm having trouble with it:
> 
> 
> zip12 ((tails . nub) flightPaths) wayPoints etopsPackets (hd geoCaches)
>   groundSpeeds headings (map windShift headings) (regulations !! 2)
>   (foldr (\|/) (tail pathDistances)) [ghy x | x <- [1..], full x]
>   (nub . nub) arrivalSchedule
> 
> 
> The domain is air traffic control and I need to generate 12-tuples for
> aircraft that are within a particular radius of the tower.
> 
> When I evaluate that expression with 'take 4' it works fine.  When I
> evaluate it with 'take 6' it works as well.  But, when I evaluate it
> with 'take 5' I get the following runtime error from H# in Visual Studio
> (it runs fine on the command line).  This is particularly odd because
> I'm not using Sql.
> 
> 
> 
> The type initializer for 'System.Data.SqlClient.SqlConnection' threw an
> exception.
> Exception (TypeInitializationException): Source="System.Data";
> Target=null; Tag=null; TypeName="System.Data.SqlClient.SqlConnection";
> Message = "The type initializer for
> 'System.Data.SqlClient.SqlConnection' threw an exception."
> InnerException (TypeInitializationException): Source="System.Data";
> Target=null; Tag=null;
> Message = "The type initializer for
> 'System.Data.SqlClient.SqlConnectionFactory' threw an exception."
> StackTrace = " at System.Data.SqlClient.SqlConnection..cctor()"
> InnerException (TypeInitializationException): Source="System.Data";
> Target=null; Tag=null;
> Message = "The type initializer for
> 'System.Data.SqlClient.SqlPerformanceCounters' threw an exception."
> StackTrace =
> " at System.Data.SqlClient.SqlConnectionFactory..ctor()
> at System.Data.SqlClient.SqlConnectionFactory..cctor()"
> InnerException (ConfigurationErrorsException):
> Source="System.Configuration"; Target=null; Tag=null; Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Paey\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> StackTrace =
> " at System.Configuration.BaseConfigurationRecord.EvaluateOne(String[]
> keys, SectionInput input, Boolean isTrusted, FactoryRecord
> factoryRecord, SectionRecord sectionRecord, Object parentResult)
> at System.Configuration.BaseConfigurationRecord.Evaluate(FactoryRecord
> factoryRecord, SectionRecord sectionRecord, Object parentResult, Boolean
> getLkg, Boolean getRuntimeObject, Object& result, Object&
> resultRuntimeObject)
> at
> System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
> configKey, Boolean getLkg, Boolean checkPermission, Boolean
> getRuntimeObject, Boolean requestIsHere, Object& result, Object&
> resultRuntimeObject)
> at
> System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
> configKey, Boolean getLkg, Boolean checkPermission, Boolean
> getRuntimeObject, Boolean requestIsHere, Object& result, Object&
> resultRuntimeObject)
> at
> System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
> configKey, Boolean getLkg, Boolean ch... (truncated) ...olean
> checkPermission)
> at System.Configuration.BaseConfigurationRecord.GetSection(String
> configKey)
> at
> System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String
> sectionName)
> at System.Configuration.ConfigurationManager.GetSection(String sectionName)
> at System.Configuration.PrivilegedConfigurationManager.GetSection(String
> sectionName)
> at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection()
> at System.Diagnostics.DiagnosticsConfiguration.Initialize()
> at System.Diagnostics.Switch.InitializeConfigSettings()
> at System.Diagnostics.Switch.InitializeWithStatus()
> at System.Diagnostics.Switch.get_SwitchSetting()
> at System.Diagnostics.TraceSwitch.get_Level()
> at System.Data.ProviderBase.DbConnectionPoolCounters..ctor(String
> categoryName, String categoryHelp)
> at System.Data.SqlClient.SqlPerformanceCounters..ctor()
> at System.Data.SqlClient.SqlPerformanceCounters..cctor()"
> BareMessage = "The value of the property 'traceOutputOptions' cannot be
> parsed. The error is: The enumeration value must be one of the
> following: None, LogicalOperationStack, DateTime, Timestamp, ProcessId,
> ThreadId, Callstack."
> Filename = "C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pey\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config line
> 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 (ConfigurationErrorsException): Source=null; Target=null; Tag=null;
> StackTrace=null; BareMessage=(->BareMessage); Filename=(->Filename);
> Line=21;
> Message =
> "The value of the property 'traceOutputOptions' cannot be parsed. The
> error is: The enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId,
> Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21)"
> Errors (ConfigurationException[]): Length=1; Rank=1; Count=1;
> #0 =
> {System.Configuration.ConfigurationErrorsException: The value of the
> property 'traceOutputOptions' cannot be parsed. The error is: The
> enumeration value must be one of the following: None,
> LogicalOperationStack, DateTime, Timestamp, ProcessId,
> ThreadId, Callstack. (C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\bin\Debug\RPMC.vshost.exe.config
> line 21) ---> UJ.ExceptionManagement.Classes.EmsInnerException: (This is
> EmsInnerException helper object)
> --- End of inner exception stack trace ---}
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> Values = System.Configuration.ConfigurationException[]
> TypeName = "System.Data.SqlClient.SqlPerformanceCounters"
> TypeName = "System.Data.SqlClient.SqlConnectionFactory"
> Environment: ThreadIdentity="" DateTime=["2008-06-27 13:02:08.709"]
> ThreadName=null WindowsIdentity="STRUSS\Pley" ThreadId="10"
> DomainName="RPMC.vshost.exe" OSVersion=["Microsoft Windows NT 5.1.2600
> Service Pack 3"] MachineName="1LPPley"
> UserName="Pley"
> Remaining Stack Trace - - - - - - - - - - - - - - - - - - - - - - - - -
> - - - - - - - - - - - - - - - - - - - - - -
> at System.Data.SqlClient.SqlConnection..ctor()
> at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
> at MicroFour.StrataFrame.Data.SqlDataSourceItem.CreateBlankDbConnection()
> at MicroFour.StrataFrame.Data.DbDataSourceItem.GetDataTable(DbCommand
> Command, OnChangeEventHandler CallBack)
> at MicroFour.StrataFrame.Data.SqlDataSourceItem.GetDataTable(DbCommand
> Command, OnChangeEventHandler CallBack)
> at MicroFour.StrataFrame.Data.DataLayer.GetDataTable(DbCommand Command,
> Boolean RegisterNotification)
> at MicroFour.StrataFrame.Business.BusinessLayer.FillDataTable(DbCommand
> CommandToExecute)
> at
> MicroFour.StrataFrame.Security.BusinessObjects.SFSUsersBO.FillByUserName(String
> UserName)
> at MicroFour.StrataFrame.Security.Login.AuthenticateUser(String
> Username, String Password, String Domain, SFSUsersBO& User)
> at MicroFour.StrataFrame.Security.Login.AttemptLogin(Object sender,
> EventArgs e)
> at RPMC.LoginForm.OnAttemptLogin() in C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\Forms\LoginForm.vb:line 30
> at RPMC.LoginForm.cmdOk_Click(Object sender, EventArgs e) in
> C:\Documents and
> Settings\Pley\Desktop\Projects\RPMC\Forms\LoginForm.vb:line 285
> at System.Windows.Forms.Control.OnClick(EventArgs e)
> at System.Windows.Forms.Button.OnClick(EventArgs e)
> at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
> at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
> button, Int32 clicks)
> at System.Windows.Forms.Control.WndProc(Message& m)
> at System.Windows.Forms.ButtonBase.WndProc(Message& m)
> at System.Windows.Forms.Button.WndProc(Message& m)
> at System.Windows.Forms.Control.ControlNativewindow.OnMessage(Message& m)
> at System.Windows.Forms.Control.ControlNativewindow.WndProc(Message& m)
> at System.Windows.Forms.Nativewindow.Callback(IntPtr hWnd, Int32 msg,
> IntPtr wparam, IntPtr lparam)
> Comments:
> EMS warning: maximum number of iterations reached when processing objects.
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