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  • Null check error message as "is null" or "was null"

    - by Timo Westkämper
    When doing null checks in Java code, and you throw IllegalArgumentExceptions for null values, what kind of message template do you use? We tend to use something like this public User getUser(String username){ if (username == null){ throw new IllegalArgumentException("username is null"); } // ... } What is better : "is null" or "was null", and why? For me "is null" feels more natural.

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  • Midi Message need help

    - by Rinaldi
    hello sir.. i need your help Sir.. how to interpret dwParam1 from delegate midiInProc into midi status message like note-off, or note-on, control change.. because as long i try dwParam1 is 254, and is not equal to note-off or else...

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  • Keyboard Input & the Win32 message loop

    - by Tom J Nowell
    How do I handle key presses and key up events in the windows message loop? I need to be able to call two functions OnKeyUp(char c); and OnKeyDown(char c);. Current literature I've found from googling has lead me to confusion over WM_CHAR or WM_KEYUP and WM_KEYDOWN, and is normally targeted at PDA or Managed code, whereas I'm using C++.

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  • Symfony Forms - trigger a custom error message in a form

    - by Martin Sikora
    Hello, in my frontend application I'm using my own login form (just email and password fields) and in the login action I'm trying to check whether the user was logged in successfuly or not. My question is: If the user wasn't logged in successfuly is there a simple way how can I add an error message to my login form? Do I have to write my own validator?

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  • PHP & MySQL submit error message problem

    - by peakUC
    When I submit a new name and not a new avatar I get the following avatar error message Please upload a .gif, .jpeg, .jpg or .png image!. I want to be able to send a new name only without having to upload a new avatar each time I submit the form without getting the avatar error message Please upload a .gif, .jpeg, .jpg or .png image! can someone help me fix this problem? Here is the php code. if (isset($_POST['submitted'])) { $mysqli = mysqli_connect("localhost", "root", "", "sitename"); $dbc = mysqli_query($mysqli,"SELECT users.* FROM users WHERE user_id=3"); $first_name = mysqli_real_escape_string($mysqli, htmlentities(strip_tags($_POST['first_name']))); $user_id = '3'; if(isset($_FILES["avatar"]["name"]) && $_FILES['avatar']['size'] <= 5242880) { if($_FILES["avatar"]["type"] == "image/gif" || $_FILES["avatar"]["type"] == "image/jpeg" || $_FILES["avatar"]["type"] == "image/jpg" || $_FILES["avatar"]["type"] == "image/png" || $_FILES["avatar"]["type"] == "image/pjpeg") { if (file_exists("../members/" . $user_id . "/images/" . $_FILES["avatar"]["name"])) { echo '<p class="error">' . mysqli_real_escape_string($mysqli, htmlentities(strip_tags(basename($_FILES["avatar"]["name"])))) . ' already exists! '; } else if($_FILES["avatar"]["name"] == TRUE) { move_uploaded_file($_FILES["avatar"]["tmp_name"], "../members/" . $user_id . "/images/" . mysqli_real_escape_string($mysqli, htmlentities(strip_tags(basename($_FILES["avatar"]["name"]))))); $avatar = mysqli_real_escape_string($mysqli, htmlentities(strip_tags(basename($_FILES["avatar"]["name"])))); } } else if($_FILES["avatar"]["type"] != "image/gif" || $_FILES["avatar"]["type"] != "image/jpeg" || $_FILES["avatar"]["type"] != "image/jpg" || $_FILES["avatar"]["type"] != "image/png" || $_FILES["avatar"]["type"] != "image/pjpeg") { echo '<p class="error">Please upload a .gif, .jpeg, .jpg or .png image!</p>'; } } else if($_FILES['avatar']['size'] >= 5242880) { echo '<p class="error">Please upload a smaller pic!</p>'; } else if($_FILES["avatar"]["name"] == NULL) { $avatar = NULL; } if(isset($_FILES["avatar"]["name"]) && $_FILES['avatar']['size'] <= 5242880) { if (mysqli_num_rows($dbc) == 0) { $mysqli = mysqli_connect("localhost", "root", "", "sitename"); $dbc = mysqli_query($mysqli,"INSERT INTO users (user_id, first_name, avatar) VALUES ('$user_id', '$first_name', '$avatar')"); } if ($dbc == TRUE) { $dbc = mysqli_query($mysqli,"UPDATE users SET first_name = '$first_name', avatar = '$avatar' WHERE user_id = '$user_id'"); echo '<p class="changes-saved">Your changes have been saved!</p>'; } if (!$dbc) { print mysqli_error($mysqli); return; } } }

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  • I am geting message when i am loading VS

    - by kumar
    when loading up a solution in VS2008 I get: An error was encountered while opening associated documents the last time this solution was loaded. Document load is being skipped during this solution load in order to avoid that error. First time when i open it shout down immediatlym then next time when I open it popups this message box it is not shouting down, once I click any usercotrols or ASPX page it is shutting off again.. How can I find which document is causing the problem? Thanks...

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  • iPhone SDK simple alert message question

    - by Paul
    char asd='a'; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Are you sure?" message:asd delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil]; [alert show]; [alert release]; above code not compiling in iPhone simulator. Why is that? :)

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  • jax-ws: how to get a handle to start/end of processing incoming soap message

    - by Gerard
    Situation: jax-ws web service on Weblogic appserver; wsdl first development, jaxb customizations in external binding file. I would like to get a handle to the actual jaxb context that will process the incoming soap xml message, before it has been unmarshalled into java objects. Then I would like to get the unmarshaller of this jaxb context - the one that actually will be used during the unmarshalling. And then setup some properties of this unmarshaller (e.g. listener and idresolver).

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  • Ajax message best practices

    - by hhj
    Say I need to use ajax to asynchronously ask the server for an xml file containing relevant data. What is the best practice on what this message should look like? Should it be a string like get_data or something similar? Should it be xml? I don't really need long polling since its a one-time (or close to it) request. Thanks.

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  • How to avoid "message superview sent to freed object" iphone

    - by Giovanni
    I have this code: CardView *aCardView = [self prendiCartaDalMazzo]; [aCardView removeFromSuperview]; [self.mieCarte addSubview:aCardView]; when i try to add aCardView as as subview of mieCarte then i get this error: objc[4800]: FREED(id): message superview sent to freed object=0x393f130 Program received signal: “EXC_BAD_INSTRUCTION”. Thanks at all can help.

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  • How to handle the pylint message: Warning: Method could be a function

    - by biffabacon
    Being new to Python, I decided to get some feedback on a class I'd written ASAP so I ran it against pylint. Is the message it gave "Warning: Method could be a function" telling me that it would be better to move this method out of the class because it doesn't use any instance variables? In c# I would make this a static method. What's the most pythonic thing to do here?

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  • Sending multiline message via sockets without closing the connection

    - by Yasir Arsanukaev
    Hello folks. Currently I have this code of my client-side Haskell application: import Network.Socket import Network.BSD import System.IO hiding (hPutStr, hPutStrLn, hGetLine, hGetContents) import System.IO.UTF8 connectserver :: HostName -- ^ Remote hostname, or localhost -> String -- ^ Port number or name -> IO Handle connectserver hostname port = withSocketsDo $ do -- withSocketsDo is required on Windows -- Look up the hostname and port. Either raises an exception -- or returns a nonempty list. First element in that list -- is supposed to be the best option. addrinfos <- getAddrInfo Nothing (Just hostname) (Just port) let serveraddr = head addrinfos -- Establish a socket for communication sock <- socket (addrFamily serveraddr) Stream defaultProtocol -- Mark the socket for keep-alive handling since it may be idle -- for long periods of time setSocketOption sock KeepAlive 1 -- Connect to server connect sock (addrAddress serveraddr) -- Make a Handle out of it for convenience h <- socketToHandle sock ReadWriteMode -- Were going to set buffering to LineBuffering and then -- explicitly call hFlush after each message, below, so that -- messages get logged immediately hSetBuffering h LineBuffering return h sendid :: Handle -> String -> IO String sendid h id = do hPutStr h id -- Make sure that we send data immediately hFlush h -- Retrieve results hGetLine h The code portions in connectserver are from this chapter of Real World Haskell book where they say: When dealing with TCP data, it's often convenient to convert a socket into a Haskell Handle. We do so here, and explicitly set the buffering – an important point for TCP communication. Next, we set up lazy reading from the socket's Handle. For each incoming line, we pass it to handle. After there is no more data – because the remote end has closed the socket – we output a message about that. Since hGetContents blocks until the server closes the socket on the other side, I used hGetLine instead. It satisfied me before I decided to implement multiline output to client. I wouldn't like the server to close a socket every time it finishes sending multiline text. The only simple idea I have at the moment is to count the number of linefeeds and stop reading lines after two subsequent linefeeds. Do you have any better suggestions? Thanks.

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  • Python SUDS - problem with sending a message encoded not in UTF-8

    - by bartekb
    I need to send a SOAP message (with Python SUDS) with strings encoded in 'iso-8859-2'. Does anybody know how to do it? SUDS raises the following exception when I invoke a method on a client with parameters encoded in 'iso-8859-2': File "/home/bartek/myenv/lib/python2.5/site-packages/suds/sax/text.py", line 43, in __new__ result = super(Text, cls).__new__(cls, *args, **kwargs) UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 10: ordinal not in range(128)

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  • Updating Commit Message in Mercurial MQ extension

    - by Jerub
    After using hg qnew and hg qrefresh to create and update a patch that I want to apply to my repository, but the commit message that I wrote when I did hg qnew was not very good, it did not reference the ticket number from trac, and I would like to say something in it about some of the issues that my commit addresses. How do I do something like hg qrewritemycommitmessage. I have examined the docs on the website (starting here: http://mercurial.selenic.com/wiki/MqExtension ) and I have come up blank.

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  • WinAPI magic (TCM_ADJUSTRECT message) and MONO runtime

    - by Luca
    I'm trying to get the same result of a .NET application (see the link Hide TabControl buttons to manage stacked Panel controls for details), but using the MONO runtime instead of the MS .NET runtime. Pratically, when the custom control is executed using the MONO runtime, the underlying message is not sent to the control, causing the tab pages to be shown... There is a portable solution which is elegant as the linked one? If it is not possible, what are possible workarounds (apart from removing/adding tabs at runtime)?

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