clone

问题 I've a repo on https://bitbucket.org/ Few days ago by a mistake big number of image files were pushed in the repo. then files were deleted via another push. after that repo worked ok, but today when i try to pull from the repo: $ git pull Password for 'https://repo@bitbucket.org': warning: no common commits remote: Counting objects: 4635, done. remote: Compressing objects: 100% (1710/1710), done. fatal: Out of memory, malloc failed (tried to allocate 4266852665 bytes) fatal: index-pack failed

问题 How does deep copies (clones) of generic types T, E work in Java? Is it possible? E oldItem; E newItem = olditem.clone(); // does not work 回答1: The answer is no. Cause there is no way to find out which class will replace your generic type E during compile time, unless you Bind it to a type. Java way of cloning is shallow, for deep cloning, we need to provide our own implementation The work-around for it, is to create a contract like this public interface DeepCloneable { Object deepClone(); }

问题 What is meant when the results of __clone() is a "Shallow Clone"? 回答1: In short: A clone will remain the same references as the original object it is cloned from. Primitive types like strings, or integer are never references (in php) and if you change one reference completely (by replacing the object of a property with another one), this will also not affect the original object. Every property will contain the same and not only the identical object, than the same-named property of the other

问题 Consider this code for loading, modifying and saving a Bitmap image: using (Bitmap bmp = new Bitmap("C:\\test.jpg")) { bmp.RotateFlip(RotateFlipType.Rotate180FlipNone); bmp.Save("C:\\test.jpg"); } it runs without any exception. But consider this one: using (Bitmap bmp = new Bitmap("C:\\test.jpg")) { using (Bitmap bmpClone = (Bitmap)bmp.Clone()) { //You can replace "bmpClone" in the following lines with "bmp", //exception occurs anyway bmpClone.RotateFlip(RotateFlipType.Rotate180FlipNone);

问题 I want to clone a Canvas object, which contains a Degrafa Surface with several Geometry shapes. I tried the naive approach: return ObjectUtil.copy(graph_area) as Canvas; which resulted in errors: TypeError: Error #1034: Type Coercion failed: cannot convert Object@63b1b51 to com.degrafa.geometry.Geometry. TypeError: Error #1034: Type Coercion failed: cannot convert Object@63b1039 to com.degrafa.geometry.Geometry. TypeError: Error #1009: Cannot access a property or method of a null object

问题 The way jQuery's .clone() seems to work, once you insert a cloned object somewhere, you cannot insert it again another time without re-cloning the original object. For example, if you do this: var cloned = $('#elem1').clone(); $('#elem2').after(cloned); $('#elem2').after(cloned); Only one copy of elem1 will get copied and the second after call would have done nothing. Is there a way to not "clear the clipboard" after using a cloned object? Right now I am making do by cloning the object again

问题 I have a simple table: <table id='table_actions'"> <tbody class='actions_body'> <tr> <td colspan=2 class="taskname"><strong>1. </strong><span name='taskname'>name</span></td> </tr> <tr> <td>Действие: </td> <td> <select name='action_action'> <option value="1">Consult</option> <option value="2">Activate</option> <option value="3">Connect</option> </select> </td> </tr> <tr> <td><button id='addaction' class="btn">Добавить действие</button></td> <td></td> </tr> </tbody> </table> And JQuery code: $

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: How do I clone a generic list in C#? hey i have been trying to clone a list and so far i found the function addRange but i am pretty sure it does not clone the objects inside the list but doing a shallow copy of the list i would like to know how to clone the list thanks in advance. 回答1: To clone a list, each individual item has to be cloned. Provided a useful implementation of Clone() for the item class exists,

问题 I need to find a object in DB by some parameters, lets take ID as example then I have this entity: namespace AppBundle\Entity; use Doctrine\ORM\Mapping as ORM; use AppBundle\Model\IdentifierAutogeneratedEntityTrait; use DateTime; /** * @ORM\Entity * @ORM\Table(name="negocio.solicitud_usuario", schema="negocio") * @ORM\Entity(repositoryClass="AppBundle\Entity\Repository\SolicitudUsuarioRepository") */ class SolicitudUsuario { use IdentifierAutogeneratedEntityTrait; /** * @ORM\ManyToOne

问题 Is there an equivalent to "svnrdump dump --incremental" in GIT? I am trying to incrementally backup several svn and git repos from a remote server to a local server but it seems that there is no direct way to "dump" a remote GIT repo. Basically I perform either " git fetch --all " with already existing or " git clone --mirror " for all new repos followed by " git bundle create --all ". Is there any other/better solution than that? 回答1: Once a full bundle is created, you can create new