messages

问题 I have this situation: ActorA sends ActorB start/stop messages every 30-40 seconds ActorA sends ActorB strings to print (always) ActorB must print the strings he receive, but only if ActorA sent just a start message Now i wonder if i can do the following things: Can ActorB read messages only under a certain condition (if a boolean is set as true) without losing the messages he receives while that boolean is set as false? Can ActorB read a start/stop message from ActorA before the other string

问题 I have a private messages table on my site and for a while now I have had an inbox and sentbox separate. I want to combine the inbox/sentbox only showing the latest message either to or from a specific user. TLDR: I want to show the latest message grouped by sent to or from each user. Example of table | id | fromuser | fromid | touser | toid | message | timestamp | -------------------------------------------------------------------------------- | 1 | user1 | 1 | user2 | 2 | Hello.. | 2015-01

问题 When writing Ruby (client scripts) I see three ways to build longer strings, including line-endings, all of which "smell" kind of ugly to me. Are there any cleaner and nicer ways? The variable-incrementing. if render_quote? quote = "Now that there is the Tec-9, a crappy spray gun from South Miami." quote += "This gun is advertised as the most popular gun in American crime. Do you believe that shit?" quote += "It actually says that in the little book that comes with it: the most popular gun in

问题 I know that javascript, for example supports functions inside of functions, like so: function doSomething(){ function doAnothingThing(){ //this function is redefined every time doSomething() is called and only exists inside doSomething() } //you can also stick it inside of conditions if(yes){ function doSomethingElse(){ //this function only exists if yes is true } } } Does objective-c support this? Theoretical example: -(void) doSomething:(id) sender{ -(void) respondToEvent: (id) sender{ /

问题 can you please help me understand how to customize error messages in a form with Symfony2? I want to change the HTML layout, adding div, class, etc... Reading the guide, it gives a piece of code to put in a file called fields_errors.html.twig but it doesn't tells where to put this file and if some extra configuration is needed. Can somebody help me? 回答1: You have to put the template in Resourses/views/ folder of your bundle. For example, {# Vendor/YourBundle/Resourses/views/form_fields.html

问题 I'm using AllocateHWnd in a class I'm writing to receive system messages with a TWndMethod and the messages I'm receiving need to handle a 4-byte WPARAM, which specifically references a pointer. But I'm only getting 2 bytes in return. How do I set up things so I can correctly receive these messages within the class? Edit: Specific code. I'm setting a message event up using SHChangeNotifyRegister, based on a Microsoft sample I downloaded. The proc works enough to pull back events (in lEvent)

问题 Does anyone know why there is some hesitation when you hold down a keyboard key and try to process it? I'm calling a function right in my WinProc(...) that will move an image on the screen (OpenGL) when a key is held down. I press it and get a single response, then there is about .5 seconds of nothing, then it behaves as normal (moves 1 pixel every WinMain loop). I'm wondering if the Windows messages are being delayed somehow because of some feature I need to disable??? Here's my code: int

问题 I want to store WCF messages in some storage and read them later on in order to "replay" them again. Attached some code parts: private void WriteMessage(Message message, string path) { FileStream fileStream = new FileStream(path, FileMode.Create); using (XmlDictionaryWriter writer = XmlDictionaryWriter.CreateBinaryWriter(fileStream)) { using (XmlDictionaryReader reader = message.GetReaderAtBodyContents()) { message.WriteBodyContents(writer); writer.Flush(); } } } private Message ReadMessage

问题 I am trying to make a notification message appear when I click the menu item, it shows me the indicator but I don't see the message, can someone explain where i did wrong : private MenuItem AMenu = new MenuItem("Notify", 101, 10) { public void run() { ReadableListImpl mylist= new ReadableListImpl(); ApplicationMessageFolder folder = null; if(ApplicationMessageFolderRegistry.getInstance().getApplicationFolder(0x33c7ce29883abe5fL)==null){ folder = ApplicationMessageFolderRegistry.getInstance()

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: What are the i18n message ids for field infos and errors? Using Annotations like @Required on a @Entity -class, a message attribute can be set easily. But how to set / overwrite the "Invalid value" message that is shown when a member of type Double is filled with a string on the form? The form.errors() -map contains an error with key "field name" and value "error.invalid", but I can't figure out the correct key