I wonder if any of you out there working with the Play Framework, has came across a module that is displaying a timestamp for a, let's say as an example, a blogpost , in the form (once again an example) "Yesterday at 11:23" and so on. Although using joda time (builtin in Play Framework), i have actually managed to build something working in this direction.
Still just curious if there exists a module...
Sinc. Kalle
not a module, but a JavaExtension for the Date object called since(). Its part of core.
http://www.playframework.org/documentation/1.2.4/javaextensions#date
Its not exact, but close. To create exactly this functionality should be a simple JavaExtension.
Related
Regarding to the solution described in this post, a third assembly is required to forward the type resolution to the correct assembly.
When adding this reference to the Android class library project using the type, the forwarding seems to not be done. The reference needs to be added in the Android application project which is the end point of the build process.
Does any solution exist to add the reference embedding the forwarding in the project requiring it ?
I mean, if in my solution architecture I use :
MyApp.Core - PCL
MyApp.Core.Droid - Android class library
MyApp.UI.Droid - Android Application
The usage of System.Net namespace (System.Net.Socket.AddressFamily for example) is done in my ViewModel, which is located in MyApp.Core.Droid (redirection of MyApp.Core with some plugins). In this case, it is more logical (and readable) to have the reference in the MyApp.Core.Droid. But in the fact, the assembly resolution is done (from what I understand) when packaging the application, so in MyApp.UI.Droid. So in this case, the reference needs to be added to MyApp.UI.Droid in order to be found (failed if added to MyApp.Core.Droid).
In this case the solution works, but its quite obvious to understand for a new programmer joining the team which, has not been facing the trouble and understands why this reference needs to be added to the UI project...
I'm not sure my thought is easy to understand by the way I introduce it. Let me know if you need more explanation.
Thanks,
Guillaume.
I'm not entirely sure why this 'fails if added to MyApp.Core.Droid' - it feels like this should be added. However, I know that Xamarin have tweaked and changed the dependency resolution scripts a few times.
With that said, I think the best answer to your question is 'don't worry about it too much' - this is only a small inconveneinve right now and it will be resolved by Xamarin's updates 'soon'.
The current PCL support is something that I and a number of others have worked on in order to make things work. This set of 'hacks' is a workaround for the lack of 'proper PCL' support - it simulates what the Microsoft PCL build platform does on WindowsPhone, WPF, etc, but it isn't a perfect implementation.
Xamarin have now committed to 'proper PCL' support. When that happens then these type-forwarding dependencies will automatically be added. The good news is that this support is perhaps now only days, weeks or at most months away.
I'm creating a plugin in Quantum GIS that is using Postgres as the back end and QT Designer to make the GUI. I'm using psycopg2 to run scripts in the database and even fetch results of queries to set the values of labels in the GUI. This stuff is working fine for me.
What I would like to do now after some queries are run by clicking a 'calculate' button is for the resulting table to be shown in the plugin as a TableView. I know there widget exists expressly for the purpose of viewing tables but I can't quite figure out how to go about it. I'm not sure if I should be using psycopg2 or PySide, since most examples I have seen online use the latter.
I am wondering if someone can tell me which between psycopg2 and PySide should be used to create the TableView. Second, I am wondering what the 'signal' should be to the TableView widget to display the results of a query in Postgres. Lastly, is anyone can offer some instruction as to how to set up the code it would be hugely appreciated!
Cheers,
Roman
I've gone ahead and tried following the PyQt documentation, but as it's provided in C++ and I'm only a beginner programmer using Python I'm not sure if I've caught all the necessary amendments to the code syntax. Anyways, this is what I have so far:
db = QSqlDatabase.addDatabase("database")
db.setHostName("localhost")
db.setUserName("postgres")
db.setPassword("password")
#Not sure what to do to set the connection. The C++ documentation says to put "bool ok = db.open();"
model = QSqlQueryModel()
model.setQuery("SELECT name, density, deveff FROM public." +str(filename)+ "_rezoning ORDER BY gid;")
model.setHeaderData(0, Qt.Horizontal, "Name")
model.setHeaderData(1, Qt.Horizontal, "Density")
model.setHeaderData(2, Qt.Horizontal, "DevEff")
view = QTableView()
view.setModel(model)
view.show()
What happens when I click the button in my GUI to run the calculations, a small blank QGIS window briefly flashes and goes away. At least I'm not getting an error, but it's obviously not complete. I assume part of the issue is the connection to the database that is missing and that I do not know how to set. The other issue is that I would like this to show in the tableView widget in the GUI, but I'm not sure how to specify this...
Any further tips? I really appreciate it.
Roman
If you're planning to use Qt widgets and models, PySide (PyQt, or plain Qt/C++) is the way to go.
With bare psycopg2 you'll have a lot more work to do, and you'll need to implement your own model in order to leverage Qt's model/view classes. This is simply not the Qt way of doing things. PySide (and PyQt) has it own means to connect to a supported database, there's no need for pure Python database adapters like psycopg2. It uses the underlying libqt4-sql library (C++) and the installed plugins (QPSQL, QMYSQL, QSQLITE, etc).
Essentially you need to:
Connect to a database.
Instantiate a model (QSqlQueryModel, QSqlTableModel or a custom QAbstractTableModel derived class)
Attach that model to a view (ie. QTableView).
Take a look at the PySide QtSql Documentation and the PyQt documentation to get an idea. They're mostly compatible/interchangeable, but at a glance I see that the PyQt documentation looks more complete.
EDIT (after your edit):
A Qt GUI application requires an event loop to run, and that's provided by a QApplication instance. Before going any further with the specifics of your app, take the time to understand a few basic concepts first. Here's a nice Getting Started with PyQt Guide.
I've been trying to use the JFace ProjectionViewer to implement folding in a standalone Java app. I got the idea from this article:
http://www.eclipse.org/articles/Article-Folding-in-Eclipse-Text-Editors/folding.html
However the source code provided with the article is for an Eclipse plug-in, not for a standalone.
The particular problem I'm having is that I can't get the VerticalRuler to respond and cause folding/unfolding.
Since I get the expected results, i.e. line numbers in the ruler, when I change from using a VerticalRuler to a LineNumberRuler while leaving everything else the same, I think my problem is specific to the implementation of the relationship among the ProjectionViewer, the VerticalRuler, and the Annotations.
My exact question is whether anyone has gotten this to work in a stand-alone code and, if so, how?
this is my first post, and it covers something which I've been trying to get working on and off for about a year now.
Essentially it boils down to the following: I have a copy of newlib which I'm trying to get working on an LPC2388 (an ARM7TDMI from NXP). This is on a linux box using arm-elf-gcc
The question I have is that I've been looking at a lot of the tutorials talking about porting newlib, and they all talk about the stubs (like exit, open, read/write, sbrk), and I have a pretty good idea of how to implement all of these functions. But where should I put them?
I have the newlib distribution from sources.redhat.com/pub/newlib/newlib-1.18.0.tar.gz and after poking around I found "syscalls.c" (in newlib-1.18.0/newlib/libc/sys/arm) which contains all of the stubs which I have to update, but they're all filled in with rather finished looking code (which does NOT seem to work without the crt0.S, which itself does not work with my chip).
Should I just be wiping out those functions myself, and re-writing them? Or should I write them somewhere else. Should I make a whole new folder in newlib/libc/sys with the name of my "architecture" and change the target to match?
I'm also curious if there's proper etiquette on distribution of something like this after releasing it as an open source project. I currently have a script which downloads binutils, arm-elf-gcc, newlib, and gdb, and compiles them. If I am modifying files which are in the newlib directory, should I hand a patch which my script auto-applies? Or should I add the modified newlib to the repository?
Thanks for bothering to read! Following this is a more detailed breakdown of what I'm doing.
For those who want/need more info about my setup:
I'm building a ARM videogame console based loosely on the Uzebox project ( http://belogic.com/uzebox/ ).
I've been doing all sorts of things pulling from a lot of different resources as I try and figure it out. You can read about the start of my adventures here (sparkfun forums, no one responds as I figure it out on my own): forum.sparkfun.com/viewtopic.php?f=11&t=22072
I followed all of this by reading through the Stackoverflow questions about porting newlib and saw a few of the different tutorials (like wiki.osdev.org/Porting_Newlib ) but they also suffer from telling me to implements stubs without mentioning where, who, what, when, or how!
But where should I put them?
You can put them where you like, so long as they exist in the final link. You might incorporate them in the libc library itself, or you might keep that generic, and have the syscalls as a separate target specific object file or library.
You may need to create your own target specific crt0.s and assemble and link it for your target.
A good tutorial by Miro Samek of Quantum Leaps on getting GNU/ARM development up and running is available here. The examples are based on an Atmel AT91 part so you will need to know a little about your NXP device to adapt the start-up code.
A ready made Newlib porting layer for LPC2xxx was available here, but the links ot teh files appear to be broken. The same porting layer is used in Martin Thomas' WinARM project. This is a Windows port of GNU ARM GCC, but the examples included in it are target specific not host specific.
You should only need to modify the porting layer on Newlib, and since it is target and application specific, you need not (in fact probably should not) submit your code to the project.
When I was using newlib that is exactly what I did, blew away crt0.s, syscalls.c and libcfunc.c. My personal preference was to link in the replacement for crt0.s and syscalls.c (rolled the few functions in libcfunc into the syscalls.c replacement) based on the embedded application.
I never had an interest in pushing any of that work back into the distro, so cannot help you there.
You are on the right path though, crt0.S and syscalls.c are where you want to work to customize for your target. Personally I was interested in a C library (and printf) and would primarily neuter all of the functions to return 0 or 1 or whatever it took to get the function to just work and not get in the way of linking, periodically making the file I/O functions operate on linked in data in rom/ram. Basically without replacing or modifying any other files in newlib I had a fair amount of success, so you are on the right path.
I found great cocoa calendar control at googlecode — http://code.google.com/p/calendarcontrol/ . Looks great , but unfortunately i can't build sources of example project. I've try resolve dependencies problem with amber.framework for several hours, but no success. Does anyone tried this control?
Maybe someone have fully read build&go example?
Please read index poge of the site you put here
Blockquote
CalendarControl is dependent on a framework (AmberKitAdditions) contained inside another one of my projects Amber found at http://code.google.com/p/amber-framework which must be available at compile time.