dynamic

问题 I have a Dynamc array of Records and I wish to pass one of the items in the array to a function by reference So for example one of the array items - AArray[1].arecorditem is a string of 6 characters String[6] the function would be - function dosomething(var AStringVal:string):Integer; So I would execute Aresult:= dosomething(AArray[1].arecorditem); however when I try to compile I get the Error Type of actual and formal var parameters must be identical. Is this possible to do or should I

问题 Basically when I create this DataGridView I have this code to fill it up public void fillDataGrid(IQueryable<PatientInfo> patients) { dgvMyPatients.DataSource = patients; dgvMyPatients.Columns["Pat_Last_Name"].DisplayIndex = 0; dgvMyPatients.Columns["Pat_First_Name"].DisplayIndex = 1; dgvMyPatients.Columns["Pat_Middle_Name"].DisplayIndex = 2; dgvMyPatients.Columns["Pat_First_Name"].HeaderText = "First Name"; dgvMyPatients.Columns["Pat_Last_Name"].HeaderText = "Last Name"; dgvMyPatients

问题 I'm considering making limited use of C#'s dynamic keyword. My initial time trials were astonishing - a performance hit of less than a second for 100,000 iterations (likely due to DLR caching). I don't have access to a memory profiler, though, and Eric Lippert wrote: Then it starts up the DLR [...] The DLR then starts up a special version of the C# compiler... What's the memory footprint of this, and is it unloaded when the dynamic code is garbage-collected? 回答1: is it unloaded when the

问题 I keep getting this error and not sure how to correct it Error 1 Cannot use 'Callback' as an argument to a dynamically dispatched operation because it is a method group. Did you intend to invoke the method? //... if (e.Status == LiveConnectSessionStatus.Connected) { client = new LiveConnectClient(e.Session); LiveOperationResult operationResult = await client.GetAsync("me"); try { dynamic meResult = operationResult.Result; var openId = meResult.id; var email = meResult.emails.preferred; /

问题 I'm reading from a boost::asio::ip::udp::socket like this: using boost::asio::ip::udp; // ... char recv_buf[128]; udp::endpoint sender_endpoint; size_t len = socket.receive_from(boost::asio::buffer(recv_buf), sender_endpoint); Now, this works perfectly fine, but the maximum amount of characters that I am able to recieve is now 127. However I am facing a problem because I need to accept some data input of which the length can greatly vary (and is not of well-defined length with prefixed

问题 I would like to see if a property exist in a C# Expando Class. much like the hasattr function in python. I would like the c# equalant for hasattr. something like this... if (HasAttr(model, "Id")) { # Do something with model.Id } 回答1: Try: dynamic yourExpando = new ExpandoObject(); if (((IDictionary<string, Object>)yourExpando).ContainsKey("Id")) { //Has property... } An ExpandoObject explicitly implements IDictionary<string, Object> , where the Key is a property name. You can then check to

问题 I would like my page to display a progress bar that fills up as the user selects options on drop-down lists. So far I've been able to set variables to contain the value of the drop-down, and functions that alter the bar's value, but nothing that works together. Here's one of the drop-downs: <select id="optionA"> <option value=" " disabled selected>Choose One...</option> <option value="mike">Mike</option> <option value="ryce">Andrew</option> <option value="michael">Michael</option> <option

问题 hai am new in android i have created a dynamically button and edit text creation i have two pages 1 for entering how many button and edit text should be created. (in that page ihave only one edit text filed and button if i enter 3 .three edittext and 3 button will create on next page dynamically) if i press three the next page will be like three button and three edittext i have want to print hello on the first edit text on pressing enter ur1st time button but when i press that button the

问题 I looked into two different method to allocate memory for the elements of a matrix Method n.1 int** matrix = new int*[rows]; for (int i = 0; i < rows; ++i) matrix[i] = new int[cols]; Method n.2 int** matrix = new int*[rows]; if (rows) { matrix[0] = new int[rows * cols]; for (int i = 1; i < rows; ++i) matrix[i] = matrix[0] + i * cols; } I can figure out what Method n.1 does, but I can't figure out what exactly is supposed to do the if clause in Method n.2 (I would implement it without and it

问题 I have a query regarding how to track milestones(Video) in brightcove player by using html 5. There is already predefined events available for PLAY, PAUSE, STOP, but for the tracking the milestones i am unable to track it via DTM. Below mentioned is the code,which i have written for PLAY & PAUSE - CODE - videojs('te-brightcove-trigger-video_html5_api').on('play',function(){ var myPlayer = this; console.log('play'); s.linkTrackVars='events,eVar21,prop21'; s.linkTrackEvents='event22'; s.eVar21