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• BOOST program_options: parsing multiple argument list.

  - by Arman

  Hello, I would like to pass the multiple arguments with positive or negative values. Is it possible to parse it? Currently I have a following initialization: vector<int> IDlist; namespace po = boost::program_options; po::options_description commands("Allowed options"); commands.add_options() ("IDlist",po::value< vector<int> >(&IDlist)->multitoken(), "Which IDs to trace: ex. --IDlist=0 1 200 -2") ("help","print help") ; and I would like to call: ./test_ids.x --IDlist=0 1 200 -2 unknown option -2 So,the program_options assumes that I am passing -2 as an another option. Can I configure the program_options in such a way that it can accept the negative integer values? Thanks Arman.

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• DAL without web2py

  - by Jay

  I am using web2py to power my web site. I decided to use the web2py DAL for a long running program that runs behind the site. This program does not seem to update its data or the database (sometimes). from gluon.sql import * from gluon.sql import SQLDB from locdb import * # contains # db = SQLDB("mysql://user/pw@localhost/mydb", pool_size=10) # db.define_table('orders', Field('status', 'integer'), Field('item', 'string'), # migrate='orders.table') orderid = 20 # there is row with id == 20 in table orders #when I do db(db.orders.id==orderid).update(status=6703) db.commit() It does not update the database, and a select on orders with this id, shows the correct data. In some circumstances a "db.rollback()" after a commit seems to help. Very strange to say the least. Have you seen this, more importantly do you know the solution? Jay

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• Retrieving inline images from Lotus notes using lotusscript

  - by Nazrul

  I have some NotesDocument where some RichText fields have both text and inline images. I can get text part of that items but can't retrieve inline images using lotusscript. Could any one please suggest me a way to retrieve inline images from that documents. LotusScript code: Sub Click(Source As Button) Dim session As New NotesSession Dim db As NotesDatabase Dim mainDoc As NotesDocument Dim v As NotesView Set db = session.CurrentDatabase Dim fileName As String Dim fileNum As Integer fileNum% = Freefile() fileName$ = "D:\data.txt" Open FileName$ For Append As fileNum% Set v = db.GetView("MyView") Set mainDoc = v.GetFirstDocument While Not ( mainDoc Is Nothing ) Forall i In mainDoc.Items If i.Type = RICHTEXT Then Write #fileNum% , i.Name & ":" & i.text 'how the images?? End If End Forall Set mainDoc = v.GetNextDocument( mainDoc ) Wend End Sub Thanks.

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• Why 'initWithObjectsAndKeys:' doesn't throw a casting warning? (NSDictionary)

  - by rubdottocom

  Sorry if the question isn't correct, I'm very new in Objective-C. I understand why this code throw the Warning: "warning: passing argument 1 of 'initWithObjectsAndKeys:' makes pointer from integer without" NSDictionary *dictNames = [[NSDictionary alloc] initWithObjectsAndKeys: 3, @"", 4, @"", 5, @"",nil]; Keys and Values of a NSDictionary must be NSObject and not fundamental types, like the integers 3, 4 and 5. (Correct me if necessary). But I don't understand why this warning dissapears with the only "correct typing" of the first Key. NSDictionary *dictNames = [[NSDictionary alloc] initWithObjectsAndKeys: [NSNumber numberWithInteger:3], @"", 4, @"", 5, @"",nil]; It's because NSDictionary assumes the type of the other Keys? Is correct this manner of initialization?

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• Is there a way to get programmatic access to the columns of a ActiveReports detail section?

  - by Seth Spearman

  Hello, I have a report in Data Dynamics ActiveReports for .NET. In this report I am programmatically setting the ColumnCount property of the detail section to X. The detail section has one databound textbox. The ColumnDirection property of the detail section is set to AcrossDown and the and then the data binding mechanism automatically fills across with data after setting the DataSource and DataMember. Here is the code... Public Sub RunReport Dim count As Integer = 0 ' ... get count Detail1.ColumnCount = count Me.DataSource = ds Me.DataMember = ds.Tables(0).TableName End Sub That code works fine and the data is automatically filled across the report. Now I need to alter the report and circle or highlight one of the items that is auto-filled across columns in the report. I cannot find any way to programmatically access the auto-generated columns so I can turn on a border or draw a circle or something. Any ideas how I would do that? Seth

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• Calling next value of a sequence in jpa

  - by Javi

  Hello, I have a class mapped as an Entity to persist it in a database. I have an id field as the primary key so every time the object is persisted the value of the id is retrieved from the sequence "myClass_pk_seq", a code like the following one. @Entity @Table(name="myObjects") public class MyClass { @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="sequence") @SequenceGenerator(name="sequence", sequenceName="myClass_pk_seq", allocationSize=1) @Column(name="myClassId") private Integer id; ... } I need to get the next value of the sequence myClass_pk_seq to reserve that value (get the next value of the sequence and the current value is incremented), but without saving the object. How can I call the next value of a sequence when it's defined like this? Thanks.

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• Why won't this Schema validate this XML file? [Source of both included - quite small]

  - by Sergio Tapia

  The XML file: <Lista count="3"> <Pelicula nombre="Jurasic Park 3"> <Genero>Drama</ Genero> <Director sexo="M">Esteven Spielberg</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano<Semestre> </Temporada> </Pelicula> <Pelicula nombre="Maldiciones"> <Genero>Ficcion</ Genero> <Director sexo="M">Pedro Almodovar</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano<Semestre> </Temporada> </Pelicula> <Pelicula nombre="Amor en New York"> <Genero>Romance</Genero> <Director sexo="F">Katia Hertz</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano<Semestre> </Temporada> </Pelicula> </Lista count="3"> And here's the XML Schema file I made, it's not working. :\ <xsd:complexType name="Lista"> <xsd:attribute name="count" type="xsd:integer" /> <xsd:complexContent> <xsd:element name="Pelicula" type="xsd:string"> <xsd:attribute name="nombre" type="xsd:string" /> <xsd:complexType> <xsd:sequence> <xsd:element name="Genero" type="generoType"/> <xsd:element name="Director" type="directorType"> <xsd:attribute name="sexo" type="sexoType"/> </xsd:element> </xsd:element name="Temporada"> <xsd:complexType> <xsd:sequence> <xsd:element name="Anho" type="anhoType" /> <xsd:element name="Semestre" type="semestreType" /> </xsd:sequence> </xsd:complexType> <xsd:element> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:complexContent> </xsd:complexType> <xsd:simpleType name="sexoType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="F"/> <xsd:enumeration value="M"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="directorType"> <xsd:restriction base="xsd:string" /> </xsd:simpleType> <xsd:simpleType name="generoType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Drama"/> <xsd:enumeration value="Accion"/> <xsd:enumeration value="Romance"/> <xsd:enumeration value="Ficcion"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="semestreType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Verano"/> <xsd:enumeration value="Invierno"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="anhoType"> <xsd:restriction base="xsd:integer"> <xsd:minInclusive value="1970"/> <xsd:maxInclusive value="2020"/> </xsd:restriction> </xsd:simpleType>

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• ADD COLUMN to sqlite db IF NOT EXISTS - flex/air sqlite?

  - by Adam

  I've got a flex/air app I've been working on, it uses a local sqlite database that is created on the initial application start. I've added some features to the application and in the process I had to add a new field to one of the database tables. My questions is how to I go about getting the application to create one new field that is located in a table that already exists? this is a the line that creates the table stmt.text = "CREATE TABLE IF NOT EXISTS tbl_status ("+"status_id INTEGER PRIMARY KEY AUTOINCREMENT,"+" status_status TEXT)"; And now I'd like to add a status_default field. thanks! Thanks - MPelletier I've add the code you provided and it does add the field, but now the next time I restart my app I get an error - 'status_default' already exists'. So how can I go about adding some sort of a IF NOT EXISTS statement to the line you provided?

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• Memory efficient way of inserting an array of objects with Core Data

  - by randombits

  I'm working on a piece of code for an iPhone application that fetches a bunch of data from a server and builds objects from it on the client. It ends up creating roughly 40,000 objects. They aren't displayed to the user, I just need to create instances of NSManagedObject and store them to persistent storage. Am I wrong in thinking that the only way to do this is to create a single object, then save the context? is it best to create the objects all at once, then somehow save them to the context after they're created and stored in some set or array? If so, can one show some example code for how this is done or point me in the direction to code where this is done? The objects themselves are relatively straight forward models with string or integer attributes and don't contain any complex relationships.

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• Display empty textbox using Html.TextBoxFor on a not-null property in an EF entity.

  - by hungster

  I am using Entity Framework (v4) entities. I have an entity called Car with a Year property of type integer. The Year property does not allow NULL. I have the following in my Create view: <%= Html.TextBoxFor(model => model.Year) %> I am required to return a new Car object (due to other requirements) in my HttpGet Create action in the CarController. Currently, a zero is displayed in the Year textbox because the Year property does not allow NULL. I would like to display an empty textbox in the Create view. How do I do this?

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• Mapping Enums to Database with NHibernate/Castle ActiveRecord

  - by Mike

  There's a few other posts on mapping Enums to the DB with ActiveRecord, but none of them answer my question. I have an enum called OrderState: public enum OrderState {InQueue, Ordered, Error, Cancelled} And I have the following property on the table: [Property(NotNull = true, SqlType = "orderstate", ColumnType = "DB.EnumMapper, WebSite")] public OrderState State { get { return state; } set { state = value; } } And I have the following type class: public class EnumMapper : NHibernate.Type.EnumStringType<OrderState> { public EnumMapper() { } public override NHibernate.SqlTypes.SqlType SqlType { get { return new NHibernate.SqlTypes.SqlType(DbType.Object); } } } Now this actually works the way I want, but the problem is I have tons of enums and I don't want to create a EnumMapper class for each one of them. Isn't there some way to just tell ActiveRecord to use DbType.Object for any enum? It seems to either want to be an integer or a string, but nothing else. This one's been driving me crazy for the last 2 hours.. Mike

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• What is The Loop Variable After a For Loop in Delphi?

  - by Andreas Rejbrand

  In Delphi, consider var i: integer; begin for i := 0 to N do begin { Code } end; One might think that i = N after the for loop, but does the Delphi compiler guarantee this? Can one make the assumption that the loop variable is equal to its last value inside the loop, after a Delphi if loop? Update After trying a few simple loops, I suspect that i is actually equal to one plus the last value of i inside the loop after the loop... But can you rely on this?

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• Seekbar: two instances of OnSeekBarChangeListener issues

  - by fordays

  Hi, I'm using two SeekBar widgets and I am encountering some trouble having them coexist at the same time. Can anyone suggest how to modify my code to work on the same Activity? SeekBar ageSeek = (SeekBar)findViewById(R.id.ageSeek); ageSeek.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if(fromUser) { age = progress; EditAge.setText(Integer.toString(age)); } } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onStopTrackingTouch(SeekBar seekBar) { } }); SeekBar serumSeek = (SeekBar)findViewById(R.id.serumSeek); serumSeek.setOnSeekBarChangeListener(new OnSeekBarChangeListener(){ @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if(fromUser) { serum = progress; EditSerum.setText(Double.toString(serum)); } } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onStopTrackingTouch(SeekBar seekBar) { } }); }

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• Generating Entity Keys

  - by David Veeneman

  I have run into my first dissapointment with Entity Framework 4. It turns out that SQL CE, when used with EF4, does not support autogenerated primary keys. I get a System.Data.UpdateException from OnjectContext.SaveChanges() with this message: Server-generated keys and server-generated values are not supported by SQL Server Compact. So, now I have to manually generate keys for my entities. Assuming I want to use auto-incremented integer keys, what is the best way to go about generating and keeping track of the keys when using Entity Framework? Thanks for your help.

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• Why won't this Schema validate this XML file?

  - by Sergio Tapia

  The XML file: <Lista count="3"> <Pelicula nombre="Jurasic Park 3"> <Genero>Drama</Genero> <Director sexo="M">Esteven Spielberg</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano</Semestre> </Temporada> </Pelicula> <Pelicula nombre="Maldiciones"> <Genero>Ficcion</Genero> <Director sexo="M">Pedro Almodovar</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano</Semestre> </Temporada> </Pelicula> <Pelicula nombre="Amor en New York"> <Genero>Romance</Genero> <Director sexo="F">Katia Hertz</Director> <Temporada> <Anho>2002</Anho> <Semestre>Verano</Semestre> </Temporada> </Pelicula> </Lista> And here's the XML Schema file I made, it's not working. :\ <xsd:complexType name="Lista"> <xsd:attribute name="count" type="xsd:integer" /> <xsd:complexContent> <xsd:element name="Pelicula" type="xsd:string"> <xsd:attribute name="nombre" type="xsd:string" /> <xsd:complexType> <xsd:sequence> <xsd:element name="Genero" type="generoType"/> <xsd:element name="Director" type="directorType"> <xsd:attribute name="sexo" type="sexoType"/> </xsd:element> </xsd:element name="Temporada"> <xsd:complexType> <xsd:sequence> <xsd:element name="Anho" type="anhoType" /> <xsd:element name="Semestre" type="semestreType" /> </xsd:sequence> </xsd:complexType> <xsd:element></xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:complexContent> </xsd:complexType> <xsd:simpleType name="sexoType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="F"/> <xsd:enumeration value="M"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="directorType"> <xsd:restriction base="xsd:string" /> </xsd:simpleType> <xsd:simpleType name="generoType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Drama"/> <xsd:enumeration value="Accion"/> <xsd:enumeration value="Romance"/> <xsd:enumeration value="Ficcion"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="semestreType"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Verano"/> <xsd:enumeration value="Invierno"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="anhoType"> <xsd:restriction base="xsd:integer"> <xsd:minInclusive value="1970"/> <xsd:maxInclusive value="2020"/> </xsd:restriction> </xsd:simpleType>

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• Return extra data besides tree data from ExtJS TreeLoader dataUrl?

  - by Chad Johnson

  I asked this question in the Ext JS forums, but I received no responses, so I am asking here. I have a TreePanel (code below) that uses a TreeLoader and an AsyncTreeNode. In my API method specified by the TreeLoader's dataUrl, I return a JSON array to populate the tree. This works great, of course. However, I need to return an additional item--an integer--in addition to the array, and I need to display that value somewhere else in my UI. Is this possible? If not, what else would be a good solution? Here's the code I have currently: tree = new Ext.tree.TreePanel({ enableDD: true, rootVisible: false, useArrows: true, loader: new Ext.tree.TreeLoader({ dataUrl: '/api/method' }), root: new Ext.tree.AsyncTreeNode() });

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• Casting in MVVM Light CommandParameterValue

  - by user275561

  here is my Problem, I want to pass the integer 1 when this canvas is pressed. Every time I click the canvas, I get a An unhandled exception of type 'System.InvalidCastException' occurred in GalaSoft.MvvmLight.dll. Now I could make my life easier and just do the RelayCommand to accept a String instead of int but for the sake of learning. How would i go about doing it this way, <i:Interaction.Triggers> <i:EventTrigger EventName="MouseLeftButtonDown"> <cmd:EventToCommand Command="{Binding ButtonPress}" CommandParameterValue="1" </i:EventTrigger> </i:Interaction.Triggers>

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• Stop the screen saver and hibernation temporarily in VB.Net

  - by Tim Santeford

  I have a very long running syncronization task that cannot be interrupted by the screen saver or aggressive power saving modes. I want to make a single api call to stop power save mode and then restore it once the task is done. The following code is peaced together from various other posts but it has no effect on XP's power management settings. What am I doing wrong? TIA! Private Declare Function SetThreadExecutionState Lib "kernel32" (ByVal esFlags As Long) As Long Public Enum EXECUTION_STATE As Integer ES_CONTINUOUS = &H80000000 ES_DISPLAY_REQUIRED = &H2 ES_SYSTEM_REQUIRED = &H1 ES_AWAYMODE_REQUIRED = &H40 End Enum Public Shared Sub PowerSaveOff() SetThreadExecutionState(EXECUTION_STATE.ES_DISPLAY_REQUIRED Or EXECUTION_STATE.ES_CONTINUOUS) End Sub Public Shared Sub PowerSaveOn() SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS) End Sub Here are the systems screensaver and powermode settings:

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• Hashing words to numbers with respect to definition

  - by thornate

  As part of a larger project, I need to read in text and represent each word as a number. For example, if the program reads in "Every good boy deserves fruit", then I would get a table that converts 'every' to '1742', 'good' to '977513', etc. Now, obviously I can just use a hashing algorithm to get these numbers. However, it would be more useful if words with similar meanings had numerical values close to each other, so that 'good' becomes '6827' and 'great' becomes '6835', etc. As another option, instead of a simple integer representing each number, it would be even better to have a vector made up of multiple numbers, eg (lexical_category, tense, classification, specific_word) where lexical_category is noun/verb/adjective/etc, tense is future/past/present, classification defines a wide set of general topics and specific_word is much the same as described in the previous paragraph. Does any such an algorithm exist? If not, can you give me any tips on how to get started on developing one myself? I code in C++.

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• SQLite3's dynamic typing

  - by Bradford Larsen

  SQLite3 uses dynamic typing rather than static typing, in contrast to other flavors of SQL. The SQLite website reads: Most SQL database engines (every SQL database engine other than SQLite, as far as we know) uses static, rigid typing. With static typing, the datatype of a value is determined by its container - the particular column in which the value is stored. SQLite uses a more general dynamic type system. In SQLite, the datatype of a value is associated with the value itself, not with its container. It seems to me that this is exactly what you don't want, as it lets you store, for example, strings in integer columns. The page continues: ...the dynamic typing in SQLite allows it to do things which are not possible in traditional rigidly typed databases. I have two questions: The use case question: What are some examples where sqlite3's dynamic typing is, in fact, beneficial? The historical/design question: What was the motivation for implementing sqlite with dynamic typing?

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• Dynamically building and updating Histograms with JFreeChart

  - by job

  I've got a stream of incoming data that I would like to plot using a simple histogram. I don't know the range of values, or the proper resolution or bin width to use for the histogram. SimpleHistogramDataset provides some of this functionality, but I don't want to have to deal with catching exceptions in order to add new bins if the new value isn't covered. In addition, it doesn't easily allow me to rebuild the histogram using a different bin width (perhaps an integer multiples of some initial set width). Is there an easy way to accomplish this with JFreeChart or some alternate charting library, or am I going to have to write my own class here?

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• Creating line graph/chart in vb.net (VS2008)

  - by typoknig

  I am reluctant to ask this question because a lot of similar questions have been asked, but after reading through them I am not getting the info I need. I am trying to follow this tutorial and I think it is going to work ok, but I have a lot of data to put in and the tutorial has the reader create the chart data points manually. I want the data points to be generated from an integer which can change while the program is running (thus the chart size needs to change) and the y coordinate of the data points needs to come from an array. I have attempted to "bind" the data but I am messing it up somehow and I don't even think that is the best way to do what I want. Also, I do not have to use the methods suggested in the tutorial, I am looking for the highest quality most efficient way to generate a line graph in vb.net (VS2008) based on the criteria I previously mentioned.

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• WPF DataGridTextColumn Can't type point for float data

  - by Alvin

  I had a WPF DataGrid and use DataGridTextColumn Binding to a Collection. The items in Collection had some float property. When my program launched, I modify the value of float property in DataGrid, if I type a integer value, it works well. But if I type char . for a float value, char . can't be typed. I had to type all the numbers first, and then jump to the . position to type char . to finish my input. So how can I type . in my situation? Thanks.

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• Can I programatically get hold of the Autos/local variables that is shown when debugging?

  - by Stefan

  Im trying to build an error-logger that loggs running values that is active in the function that caused the error. (just for fun so its not a critical problem) When going in break-mode and looking at the locals-tab and autos-tab you can see all active variables (name, type and value), it would be useful to get hold of that for logging purposes when an error occur and on some other occasions. For my example, I just want to find all local variables that are of type string and integer and store the name and value of them. Is this possible with reflection? Any tips or pointers that get me closer to my goal would be very appreciated. I have toyed with using expression on a specifik object (a structure) to create an automapper against a dataset, but I have not done anything like what I ask for above, so please make me happy and say its possible. Thanks.

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• CGBitmapContextCreate: unsupported parameter combination

  - by tarmes

  I'm getting this error when creating a bitmap context: CGBitmapContextCreate: unsupported parameter combination: 8 integer bits/component; 24 bits/pixel; 3-component color space; kCGImageAlphaNone; 7936 bytes/row. Here's the code (note that the context is based on the parameters of an existing CGImage: context = CGBitmapContextCreate(NULL, (int)pi.bufferSizeRequired.width, (int)pi.bufferSizeRequired.height, CGImageGetBitsPerComponent(imageRef), 0, CGImageGetColorSpace(imageRef), CGImageGetBitmapInfo(imageRef)); Width is 2626, height is 3981. I've leaving bytesPerRow at zero so that it gets calculated automatically for me, and it's chosen 7936 of its own accord. So, where on Earth is the inconsistency? It's driving me nuts.

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