array

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an array like this $data = array( "163", "630", "43", "924", "4", "54" ); How can I select the smallest and largest values from it according to string length NOT number value. (for this example it is 1 (smallest) and 3 (largest) . 回答1: Seems like you should use an array_map() // Convert array to an array of string lengths $lengths = array_map('strlen', $data); // Show min and max string length echo "The shortest is " . min($lengths) . ". The longest is " . max($lengths); Note that the $lengths array is unsorted, so you can easily

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: As described here , a quick way to append array b to array a in javascript is a.push.apply(a, b) . You'll note that the object a is used twice. Really we just want the push function, and b.push.apply(a, b) accomplishes exactly the same thing -- the first argument of apply supplies the this for the applied function. I thought it might make more sense to directly use the methods of the Array object: Array.push.apply(a, b) . But this doesn't work! I'm curious why not, and if there's a better way to accomplish my goal. (Applying the push

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I get a String data from Cursor, but I don't know how to convert it to Array. How can I do that? String[] mString; for(cursor.moveToFirst(); cursor.moveToNext(); cursor.isAfterLast()) { mTitleRaw = cursor.getString(cursor.getColumnIndex(SBooksDbAdapter.KEY_TITLE_RAW)); } mString = mTitleRaw ???? 回答1: You could just wrap mTitleRaw into a single element array like so: mString = new String[] { mTitleRaw }; Update: What you probably want is to add all the rows to a single array, which you can do with an ArrayList, and mutate back to a String[]

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I know this has been asked before but in my opinion there are still no answers that explain what is going on and don't happen to work for my case. I have a matlab v7.3 file that is structured like so, ---> rank ---> each element is f.mat ---> compare ---> each element is I hope this is straight forward enough. So what I am trying to do is read all 454 arrays with dimensions 53x54 from the cell array named 'rank', into a list of numpy arrays in python using the h5py library like so: import h5py with h5py.File("f.mat") as f: data = [np.array

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Does anyone know of a .NET array class/library which will page its contents out to disk? The idea is to be able to use it as a normal array but the class uses less RAM (to avoid getting out-of-memory exceptions with more than 2GB of data). Ideally the class will implement one of: System.Collections.Generic.IList System.Collection.IList Any ideas much appreciated! 回答1: I haven't come across anything like that, but I guess that's because it's rarely needed. After all, a database table (in SQL Server or any other database) is in essence a disk

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: WHAT AM I TRYING TO DO I want to make a Native Android APP (Not HTML5/Jquery mobile) for my Woocommerce website. I am trying to setup the APIs using kloon/WooCommerce-REST-API-Client-Library . So far I managed to retrieve the lists of products, coupons, customers, orders etc... which I could use to display in my Android app. Now I want to replicate add to cart/checkout process in the android app, but it seems this library dosen't provide functions for such workflow. MY QUESTION How can I achieve the follwing workflow with REST APIs in my

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Suppose that I have a serie of documents with the following format: { "_id": "3_0", "values": ["1", "2"] } and I would want to obtain a projection of the values in the array concatenated in a single field. I would want to obtain each document with the following format. { "_id": "3_0", "values": "1_2" } Is this possible? I have tried with $concat but I guess that I can't use $values as the array for $concat . 回答1: In Modern MongoDB releases you can. You still cannot "directly" apply an array to $concat , however you can use $reduce to work

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Official Laravel documentation has this on sync() function: $user->roles()->sync( array( 1, 2, 3 ) ); You may also associate other pivot table values with the given IDs: $user->roles()->sync( array( 1 => array( 'expires' => true ) ) ); In the latter example only a single pivot row is being added. What I don't understand is how can I associate other pivot table records if there are more than one rows to be synced? Thanks in advance. 回答1: In order to sync multiple models along with custom pivot data, you need this: $user->roles()->sync( array(

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have always had this one issue with arrays of ArrayLists. Maybe you can help. //declare in class private ArrayList<Integer>[] x; //in constructor x=new ArrayList[n]; This generates a warning about unchecked conversion. But x=new ArrayList<Integer>[n]; is a compiler error. Any idea? Thanks! 回答1: You can't make a array of generics lists. Fortunately, there are workarounds. And even more fortunately, there is a nice site about Generics with more information than you'd ever want to know. The link goes straight to the Arrays in Java Generics

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: i wonder if there is a easy way to convert my float array image to iplimage, which can be handled by opencv. Of course i could create an empty iplimage with the same size and just copy ever pixel from my float array image to the emplty iplimage, but is there more elegant solution to this. Maybe a faster less memory consuming method, since the source images are pretty large and the copy process would take a while. Best regards, Zhengtonic 回答1: You can do something like this (assuming 32 bit floats): float* my_float_image_data; CvSize size;