dynamic

问题 I'm new to assembly and I'm trying to figure out how C++ handles dynamic dispatch in assembly. When looking through assembly code, I saw that there were 2 unusual calls: call _Znwm call _ZdlPv These did not have a subroutine that I could trace them to. From examining the code, Znwm seemed to return the address of the object when its constructor was called, but I'm not sure about that. ZdlPv was in a block of code that could never be reached (it was jumped over). C++: Fruit * f; f = new Apple(

问题 I have an architecture where virtually everything is a plugin. This architecture underlies a graphic user interface where each plugin is represented by a "surface" (i.e. a UI control through which the user can interact with the plugin). These surfaces are also plugins. Whenever a new plugin is added, a thin host automatically determines which of the available surfaces is the best UI match for it. How that dynamic type matching can be accomplished in C++ is the subject of this question. At

问题 I am trying to create dynamic partitions in hive using following code. SET hive.exec.dynamic.partition = true; SET hive.exec.dynamic.partition.mode = nonstrict; create external table if not exists report_ipsummary_hourwise( ip_address string,imp_date string,imp_hour bigint,geo_country string) PARTITIONED BY (imp_date_P string,imp_hour_P string,geo_coutry_P string) row format delimited fields terminated by '\t' stored as textfile location 's3://abc'; insert overwrite table report_ipsummary

问题 I want create a html5 audio in dynamic and play it,here is the code: function playAnotherMusic(playUrl){ var audioElement = document.createElement('audio'); audioElement.setAttribute('src', playUrl); audioElement.setAttribute('controls', true); audioElement.setAttribute('preload', true); audioElement.setAttribute('type', 'audio/mpeg'); audioElement.addEventListener("load", function() { audioElement.play(); }, true); console.log(playUrl); audioElement.load(); } However it doesn't work,the

问题 Is it possible to execute string path on dynamic type? For example having dynamic type we can write dynamic d = myObj; var v = d.MyMethod(1,"text").SomeProperty.Name Now imagine I have string path string path = "MyMethod(1,\"text\").SomeProperty.Name"; var v = d. //How to applay string path to this type? 回答1: I have solution using extension method and reflection, you need to optimize and test for different scenario. EDIT Still dirty code, but supports overloaded method now. I will try to do

问题 Sorry, this became a 3-fold question regarding arrays I think (dynamic) arrays are truly powerful in D, but the following has been bothering me for a while: In C++ I could easily allocate an array with designated values, but in D I haven't found a way to do so. Surely the following is no problem: int[] a = new int[N]; a[] = a0; But it looks inefficient, since line one will initialize with 0 , and like 2 with a0 . Could something similar to the following be done in D? int[] a = new int(a0)[N];

问题 I want to dynamically create assemblies in the integration tests for the purpose of testing some assembly manipulation classes. If I use the following code to create the testing assemblies: var domain = AppDomain.CurrentDomain; var builder = domain.DefineDynamicAssembly( new AssemblyName(assemblyName), AssemblyBuilderAccess.Save, directory); builder.Save(fileName); then everything runs ok, the assemblies are created in the required location, but as part of this they are also loaded to the

问题 I'm creating DOM elements dynamically (more specifically, using jQuery to create a DIV containing some text with css "width:auto", and using a "font-face" font, in the page OnLoad event) but find that the width of the div is not the expected size (specifically, the width is wrong) immediately after I create it and add it to the DOM tree. I need to know the width/height of the element because I will be doing some dynamic layout on it. As a workaround, I use the following code after creating

问题 How to automatically reload Clojure code? I have watched the presentation. And in there they use some hot swap Clojure technology that reloads code whenever changes are made into source files. I can run the code, but I can not observe the effect of auto reload. How is it possible to reload the code? the source code. 回答1: There are many ways to reload code, depending on the situation: Emacs/CIDER shortcuts to reload a file. Probably Rich is doing something similar. Also see this: How to reload

问题 Hi I have a rails4 app using pagination with the will_paginate gem. Is there a way to handle pagination with objects created very often? If you call the first page and right after that the page 2, considering new objects are created in the meantime, it is going to mess data (the offset in the sql request is for example going to call almost the same data as the first page). Is there a way to use pagination with rapidly changing dynamic data? Thx for your suggestions 回答1: Also, you could use