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  • Migrating from Forms to WPF

    - by Jason Williams
    We're considering migrating a WinForms app to WPF, but are just starting on the WPF learning curve now that 4.0 is out. What I'd like to do is migrate our application commands (cut, copy, paste, etc) to a WPF-like command-binding system, while still running as a WinForms app - but in such a way as to make the migration easy when we go ahead with WPF. The ideal approach would be to implement our commands using the WPF command interfaces, classes and events directly, and simply hooking the WinForms events up to them with our own dispatcher. Has anyone tried something like this or know if it might be possible?

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  • python interactive web data/forms/interface communicating with remote server

    - by decipher
    What's an efficient method (preferably simple as well) for communicating with a remote server and allowing the user to 'interact' with it (IE submit commands, user interface) via the web browser (IE a text box to input commands, and an text area for output, or various command-less abstracted interfaces)? I have the 'standalone' python code finished for communicating and working(terminal/console based right now). My primary concern is with re-factoring the code to suite the web, which involves establishing a connection (python sockets), and maintaining the connection while the user is logged on. some further details: currently using django framework for the basic back end/templates.

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  • Developing "Command Line" in .NET?

    - by Sergey Malyan
    Imagine a "search box" on the right top side of the UI Windows Application. When user types a desired action, a matching functionality is executed. Screen gets opened, or action gets performed. For example: user types "create" and intellisence offered next word options "client"/"product", user picks "client", and "Create New Client" screen opens up. So what I am looking for if there is a framework support for this. I assume that framework shall bind together text commands names, commands and show in intellisense. Same framework possibly could have been used in alternative "Command Line interface". I recall Microsoft had some recent framework that helps to setup "command Line Interface" environmental. It is hard to search on web for this keywords, so relying on intelligent help from you guys. Thanks in advance.

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  • python - sys.argv and flag identification

    - by tekknolagi
    when I accept arguments how do I check if two show up at the same time without having a compound conditional i.e. #!/usr/bin/python import random, string import mymodule import sys z = ' '.join(sys.argv[2:]) q = ''.join(sys.argv[3:]) a = ''.join(sys.argv[2:]) s = ' '.join(sys.argv[1:]) flags = sys.argv[1:5] commands = [["-r", "reverse string passed next with no quotes needed."], ["-j", "joins arguments passed into string. no quotes needed."], ["--palindrome", "tests whether arguments passed are palindrome or not. collective."],["--rand","passes random string of 10 digits/letters"]] try: if "-r" in flags: if "-j" in flags: print mymodule.reverse(q) if not "-j" in flags: print mymodule.reverse(z) if "-j" in flags: if not "-r" in flags: print a if "--palindrome" in flags: mymodule.ispalindrome(z) if (not "-r" or not "-j" or not "--palindrome") in flags: mymodule.say(s) if "--rand" in flags: print(''.join([random.choice(string.ascii_letters+"123456789") for f in range(10)])) if not sys.argv[1]: print mymodule.no_arg_error if "--help" in flags: print commands except: print mymodule.no_arg_error i just want to be able to say if "-r" and "-j" in flags in no particular order: do whatever

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  • Does an updated 'vimtutor' exist?

    - by Glennular
    vim comes with a nice built-in interactive tutorial. You can access this tutorial by just running: $ vimtutor It is very easy to use because it creates working cases for basic commands. Is there a more advanced tutorial? Has any one though to build one to help uses take their VIM skills to the next level. Most tutorial and cheat-sheet sites out there for vim only show commands but not necessarily specific uses and examples. Is there an advance tutorial out there? Is this the type of project that could be an open source document that everyone can add examples to? Like a Vim Interactive Wiki or similar to the RegEx sites that have the built in regex testers.

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  • Gotchas INSERTing into SQLite on Android?

    - by paul.meier
    Hi friends, I'm trying to set up a simple SQLite database in Android, handling the schema via a subclass of SQLiteOpenHelper. However, when I query my tables, the columns I think I've inserted are never present. Namely, in SQLiteOpenHelper's onCreate(SQLiteDatabase db) method, I use db.execSQL() to run CREATE TABLE commands, then have tried both db.execSQL and db.insert() to run INSERT commands on the tables I've just created. This appears to run fine, but when I try to query them I always get 0 rows returned (for debugging, the queries I'm running are simple SELECT * FROM table and checking the Cursor's getCount()). Anybody run into anything like this before? These commands seem to run on command-line sqlite3. Are they're gotchas that I'm missing (e.g. INSERTS must/must not be semicolon terminated, or some issue involving multiple tables)? I've attached some of the code below. Thanks for your time, and let me know if I can clarify further. @Override public void onCreate(SQLiteDatabase db) { db.execSQL("CREATE TABLE "+ LEVEL_TABLE +" (" + " "+ _ID +" INTEGER PRIMARY KEY AUTOINCREMENT," + " level TEXT NOT NULL,"+ " rows INTEGER NOT NULL,"+ " cols INTEGER NOT NULL);"); db.execSQL("CREATE TABLE "+ DYNAMICS_TABLE +" (" + " level_id INTEGER NOT NULL," + " row INTEGER NOT NULL,"+ " col INTEGER NOT NULL,"+ " type INTEGER NOT NULL);"); db.execSQL("CREATE TABLE "+ SCORE_TABLE +" (" + " level_id INTEGER NOT NULL," + " score INTEGER NOT NULL,"+ " date_achieved DATE NOT NULL,"+ " name TEXT NOT NULL);"); this.enterFirstLevel(db); } And a sample of the insert code I'm currently using, which gets called in enterFirstLevel() (some values hard-coded just to get it running...): private void insertDynamic(SQLiteDatabase db, int row, int col, int type) { ContentValues values = new ContentValues(); values.put("level_id", "1"); values.put("row", Integer.toString(row)); values.put("col", Integer.toString(col)); values.put("type", Integer.toString(type)); db.insertOrThrow(DYNAMICS_TABLE, "col", values); } Finally, query code looks like this: private Cursor fetchLevelDynamics(int id) { SQLiteDatabase db = this.leveldata.getReadableDatabase(); try { String fetchQuery = "SELECT * FROM " + DYNAMICS_TABLE; String[] queryArgs = new String[0]; Cursor cursor = db.rawQuery(fetchQuery, queryArgs); Activity activity = (Activity) this.context; activity.startManagingCursor(cursor); return cursor; } finally { db.close(); } }

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  • Good workflow with emacs+swank+slime+clojure?

    - by grm
    I just wanted opinion on good workflow using the emacs environment with clojure+swank+slime. I often find myself doing very repetitive keycommands and wonder if there is an obvious better way. I include swank with lein and start my project using lein swank from shell. Then I connect with emacs and do the correct use commands so that I can start to use (run-tests ). Then I do some coding and then want to test. To run the test I need to change buffer in emacs to the swank-repl C-x o, then I need to go to the prompt M-, then repeat the command M-p, then enter, maybe with an exception, then back to the code buffer and continue all over again with all the emacs commands. I find it a bit repetitive. I guess the solution would be to start hack on emacs and maybe add a shortcut for doing this repetitive task, but I would love to hear some suggestions because I can't be the only one who find this tedious?

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  • How can I identifying control characters in Perl?

    - by sganesh
    I want to implement the command line features like in a linux terminal. I saw this in ftp command also. If I press tab I need to list the commands. If I press control characters I need to get that characters based on that I will do some action. And if I give any commands it should execute. For this I tried with Term::ReadKey that is in non-canonical mode. But here I am facing more problems like if I press any control character or arrow I got three characters. For the up arrow I got ASCII 27 91 65. Can anyone help me out of this problem?

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  • Subversion commit failed on Mac OS X with error "no such table: rep_cache"

    - by arun
    I created a subversion repository, imported an empty structure, checked out the repo, added a file to the working copy and tried commiting the working copy with the following commands: svnadmin create mysvn svn import -m "initial empty structure" test/ file:///tmp/mysvn svn co file:///tmp/mysvn mywc svn ci -m "test" The commit failed with the following error: Transmitting file data .svn: Commit failed (details follow): svn: While preparing '/tmp/mywc' for commit svn: no such table: rep_cache I am running Mac OS X 10.6.3 and subversion 1.6.5. Did I miss any steps or Mac specific commands? Thanks for your help.

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  • Operant conditioning algorithm?

    - by Ken
    What's the best way to implement real time operant conditioning (supervised reward/punishment-based learning) for an agent? Should I use a neural network (and what type)? Or something else? I want the agent to be able to be trained to follow commands like a dog. The commands would be in the form of gestures on a touchscreen. I want the agent to be able to be trained to follow a path (in continuous 2D space), make behavioral changes on command (modeled by FSM state transitions), and perform sequences of actions. The agent would be in a simulated physical environment.

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  • Creating standalone, console (shell) for domain-specific operations

    - by mr.b
    Say that I have a system service, and I want to offer a low-level maintenance access to it. For that purpose, I'd like to create a standalone, console application that somehow connects to server process and lets user type in commands, allow it to use auto-completion and auto-suggestion on single/double TAB press (just like linux bash shell, mysql cli, cmd.exe, and countless others), allow command line editing capabilities (history, cursor keys to move around text..), etc. Now, it's not that much of a problem to create something like that by rolling my own from scratch, handling user input, scanning pressed keys, and doing correct actions. But, why reinvent the wheel? Is there some library/framework that helps with this kind of problems, just like readline library that offers improved command-line editing capabilities under linux? Of course, this new "shell" would respond only to valid, domain-specific commands, and would suggest valid arguments, options, switches... Any ideas? Thanks!

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  • How to Redirect a Python Console output to a QTextBox

    - by krishnanunni
    Hello, I'm working on developing a GUI for the recompilation of Linux kernel. For this I need to implement 4-5 Linux commands from Python. I use Qt as GUI designer. I have successfully implemented the commands using os.system() call. But the output is obtained at the console. The real problem is the output of command is a listing that takes almost 20-25 min continuous printing. How we can transfer this console output to a text box designed in Qt. Can any one help me to implement the setSource() operation in Qt using source as the live console outputs.

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  • OpenNETCF.Net.Ftp Behaving Flaky

    - by gnomixa
    I tried posting on their boards (authors of this library), however it literally takes months for them to reply when it comes to the free software (can't blame them). But anyways I have found that this library is behaving weirdly - for instance, a major problem with my application is when someone is trying to sign in (through FTP), they provide a correct login and mistype the password, no reply is received from FTP server. I tried doing the same from command window just to verify that it's not the FTP server's fault; and FTP commands were received instantaneously. It almost looks as though this library eats the commands. The same actions often times will yield different results. Can anyone recommend a stable, reliable library to use with Compact framework? Or shed some light on this issue...?

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  • vim - how am I suppose to read this command to remove all blanks at the end of a line

    - by whaley
    I happened across this page full of super useful and rather cryptic vim tips at http://rayninfo.co.uk/vimtips.html. I've tried a few of these and I understand what is happening enough to be able to parse it correctly in my head so that I can possibly recreate it later. One I'm having a hard time getting my head wrapped around though are the following two commands to remove all spaces from the end of every line :%s= *$== : delete end of line blanks :%s= \+$== : Same thing I'm interpreting %s as string replacement on every line in the file, but after that I am getting lost in what looks like some gnarly variation of :s and regex. I'm used to seeing and using :s/regex/replacement. But the above is super confusing. What do those above commands mean in english, step by step?

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  • Reading Values Returned by SQLDataSource Before Binding to FormView

    - by peter.newhook
    I have a FormView that shows posts by users. I'd like to add Edit and Delete commands to the post to let the original author edit or delete their post. I'd like these commands to be available to only the author. The FormView is populated by a SqlDataSource that uses a stored procedure. I was thinking I would set the Edit and Delete hyperlink to Visible=False, then compare the currently signed in user guid to the guid of the post's author, and make the hyperlinks visible if the two guids are the same. I've tried using the Selected event of the SqlDataSource to capture the guid (which is returned by the stored procedure) however I can't find way to get the values returned by this datasource. How do I access the values returned by a SqlDataSource before they get databound?

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  • CLI design and implementation?

    - by Majid
    I am developing a time management tool for my personal use. I prefer using keyboard over mouse, and on the interface have a general purpose text box which will act like a command line. I have just started thinking about what commands I need, what to use for the command names, how to pass in switches and parameters, and so forth. I wonder if some of you have come across a good read along these lines; something that describes the choices you have for designing a cli, and how those affect the complexity of the interpreter, and extendability of the commands. It makes no difference if the descriptions are language-specific or in general terms. However, my implementation will be with javascript. Thank you.

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  • capistrano deployment with use_sudo=true - permissions problem

    - by Pavel K.
    i am trying to do a deployment with capistrano to newly installed Ubuntu server i am deploying to directory /var/www, owned by root, so i need to set use_sudo to true while i execute commands with run "#{try_sudo} command" without problem, svn checkout doesn't work with sudo prefix i try set :deploy_via, :export and it throws Can't make directory '/var/www/pr_name/releases/20091217171253': Permission denied during checkout i imagine adding "try_sudo" prefix to "svn export" would help, but where can i edit the one it uses in deploy_via? -- if on other hand i don't use use_sudo, and set /var/www/ directory ownership to myuser, i still cannot deploy - some of my deployment commands set folders ownership to apache user www-data and then i get something like: changing ownership of `/var/www/pr_name/current/specificdirectory': Operation not permitted which, if i understand correctly, has to be done with sudo

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  • TimeOuts with HttpWebRequest when running Selenium concurrently in .NET

    - by domsom
    I have a download worker that uses ThreadPool-threads to download files. After enhancing these to apply some Selenium tests to the downloaded files, I am constantly experiencing TimeOut-exceptions with the file downloaders and delays running the Selenium tests. More precisely: When the program starts, the download threads start downloading and a couple of pages are seamlessly processed via Selenium Shortly after, the first download threads start throwing TimeOut exceptions from HttpWebRequest. At the same time, commands stop flowing to Selenium (as observed in the SeleniumRC log), but the thread running Selenium is not getting any exception This situation holds as long as there are entries in the download list: new download threads are being started and terminate after receiving TimeOuts (without trying to lock Selenium) As soon as no more download threads are being started, Selenium starts receiving commands again and the threads waiting for the lock are processed sequentially as designed Now here's the download code: HttpWebRequest request = null; WebResponse response = null; Stream stream = null; StreamReader sr = null; try { request = (HttpWebRequest) WebRequest.Create(uri); request.ServicePoint.ConnectionLimit = MAX_CONNECTIONS_PER_HOST; response = request.GetResponse(); stream = response.GetResponseStream(); // Read the stream... } finally { if (request != null) request.Abort(); if (response != null) response.Close(); if (stream != null) { stream.Close(); stream.Dispose(); } if (sr != null) { sr.Close(); sr.Dispose(); } } And this is how Selenium is used afterwards in the same thread: lock(SeleniumLock) { selenium.Open(url); // Run some Selenium commands, but no selenium.stop() } Where selenium is a static variable that is initialized in the static constructor of the class (via selenium.start()). I assume I am running into the CLR connection limit, so I added these lines during initalization: ThreadPool.GetMaxThreads (out maxWorkerThreads, out maxCompletionPortThreads); HttpUtility.MAX_CONNECTIONS_PER_HOST = maxWorkerThreads; System.Net.ServicePointManager.DefaultConnectionLimit = maxWorkerThreads + 1; The + 1 is for the connection to the SeleniumRC, due to my guess that the Selenium client code also uses HttpWebRequest. It seems like I'm still running into some kind of deadlock - although the threads waiting for the Selenium lock do not hold any resources. Any ideas on how to get this working?

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  • Aspect Oriented Programming vs List<IAction> To execute methods based on conditions

    - by David Robbins
    I'm new to AOP so bear with me. Consider the following scenario: A state machine is used in a workflow engine, and after the state of the application is changed, a series of commands are executed. Depending on the state, different types of commands should be executed. As I see it, one implementation is to create List<IAction> and have each individual action determine whether it should execute. Would a Aspect Oriented process work as well? That is, could you create an aspect that notifies a class when a property changes, and execute the appropriate processes from that class? Would this help centralize the state specific rules?

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  • Using PowerShell class to invoke a "[namespace.class]::method" style command

    - by Marco
    Hello, I created a powershell object via .net to invoke commands. When I invoke normal commands like 'Get-Process' I had no problems: ps.AddCommand("Get-Process").AddParameter(...).Invoke() but I'm not able to invoke a .net method with the syntax "[namespace.class]::method", just to make an example to invoke [System.IO.File]::Exists("c:\boo.txt"). I tried with ps.AddCommand("[System.IO.File]::Exists(\"c:\\boo.txt\")").Invoke() ps.AddCommand("[System.IO.File]::Exists").AddArgument("c:\\boo.txt").Invoke() and some others. It always throws an exception which says that the command specified is not recognized. There is a way to invoke that type of command? Thanks

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  • "set -e" in shell and command substitution

    - by ivant
    In shell scripts set -e is often used to make them more robust by stopping the script when some of the commands executed from the script exits with non-zero exit code. It's usually easy to specify that you don't care about some of the commands succeeding by adding || true at the end. The problem appears when you actually care about the return value, but don't want the script to stop on non-zero return code, for example: output=$(possibly-failing-command) if [ 0 == $? -a -n "$output" ]; then ... else ... fi Here we want to both check the exit code (thus we can't use || true inside of command substitution expression) and get the output. However, if the command in command substitution fails, the whole script stops due to set -e. Is there a clean way to prevent the script from stopping here without unsetting -e and setting it back afterwards?

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  • How can I set my deployment options to script the incremental release of a Visual Studio 2010 databa

    - by littlechris
    I've just started using a VS2010 database project to manage the release of an update to an existing database. I want the deployment option to generate a script that will contain the commands to change my existing database rather than create an entirely new one. E.g I have 10 existing tables - one of which I drop in the new version and I create some new sprocs. I only want the deploy to script the Drop table and Create Procedure commands. I am using VS2010 Premium. Thanks!

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