storage

问题 My application requires that when a snapshot is taken it must store in memory and next time when I restart the phone I must get a thumbnail of that photo in list of photos and the full scale photo when I click on it. There are 2 ways I know. Store images directly. Concern here is every time it has to hit directory to get image which takes some time. Store all images in single xml. Concern here is XML will be too big and takes time to parse Which is more efficient ? 回答1: Definitely store the

问题 I'm making a content script extension for Google Chrome, it adds functionality to a website's page. I want to add a couple of options, not big deal really, I'd just need two strings (none of which are sensitive user data). From this answer, I assume I need a background page, which I'd rather not add to my extension - I don't want it to gain unnecessary weight. Do I really need a background page, or I could have an options page without it (and which storage could I use)? 回答1: UPDATE As of

问题 Using laravel 5.3, I am trying to retrieve an image in a view. How I could do this? folder structure: storage/app/avatard Here is the code: public function storeAvatar(Request $request, $username) { $user = User::where('name', $username)->first(); $avatar = $request->file('avatar')->store('avatars'); $avatar = explode('avatars/', $avatar); $user->user_setting()->updateOrCreate( ['user_id' => $user->id], ['avatar' => $avatar[1]] ); return back(); } This is how the image path is saved in the

问题 I have an app where the users of my app can upload/download files, I don't want them to authorize every time they want to upload a file. So I came to know that Service Account is the solution to it, and that is exactly what I was looking for. I followed the the instructions given in this page: https://developers.google.com/drive/service-accounts It all works good, but the problem is the limit, i.e only 5GB, Isn't there any way where I can buy some Additonal Storage for my service Account(It

问题 I want to store a letter into a variable so that whenever the program starts again it can use the variable in further program execution. What is the way to achieve this? 回答1: No, you cannot achieve this using variables . variables only exist untill the program finishes execution. Once the program is finished, no variable is retained . You need to make use of file i/o . You can write the end (final) data of one execution to a file, the next time program runs, it can read the file contains and

问题 I know that my question is a duplicate of this question and this one. But still I have some problems, so don't try to close or downvote my question friends. Please go through the question fully. In my app I want to store Images into the same folder as where the device native Camera stores them. As per my research, I have found out that each device stores the Images into a different name and in different folder. That is: Nexus-One stores its camera files into a folder named Camera (/sdcard

问题 What is default storage class of a global variable? While searching on web I found, some sites say it is static . But, static means internal linkage and the variable can not be available outside the file scope i.e it should not be available to other object files. But, they still can be accessed to other files using declarations like extern int i . And, if I explicitly mention static to global variable then it is not available outside the file scope. Then, what is correct default storage class

问题 The attack One possible threat model, in the context of credential storage, is an attacker which has the ability to : inspect any (user) process memory read local (user) files AFAIK, the consensus on this type of attack is that it's impossible to prevent (since the credentials must be stored in memory for the program to actually use them), but there's a couple of techniques to mitigate it: minimize the amount of time the sensitive data is stored in memory overwrite the memory as soon as the

问题 I'm not sure how to use the XMPPFramework's core data to store incoming messages. Does anyone have any tutorials on how to do this? I see User objects, which in turn can have many "resources". Is each message received supposed to be a new resource that I create and persist? I do not know what part is my responsibility and what part the framework provides regarding message history. I can intercept every incoming message. Then am I supposed to create and store each message inside a Messages

问题 How can data written to a file really be flushed/synced with the block device by Java. I tried this code with NIO: FileOutputStream s = new FileOutputStream(filename) Channel c = s.getChannel() while(xyz) c.write(buffer) c.force(true) s.getFD().sync() c.close() I supposed that c.force(true) togehter with s.getFD().sync() should be sufficient because the doc for force states Forces any updates to this channel's file to be written to the storage device that contains it. If this channel's file