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. > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe