identifier

There are two tables: table A and table B. They have the same columns and the data is practically identical . They both have auto-incremented IDs, the only difference between the two is that they have different IDs for the same records. Among the columns, there is an IDENTIFIER column which is not unique , i.e. there are (very few) records with the same IDENTIFIER in both tables. Now, in order to find a correspondence between the IDs of table A and the IDs of table B, I have to join these two tables (for all purposes it's a self-join) on the IDENTIFIER column, something like: SELECT A.ID, B.ID

I am actually creating an iOS app, and want to store some details about Photo Library pictures in an SQLite database. I also would like to be able to share this data across the different devices the user has (imagine someone wanted to reorganize pictures on his iPhone, and wants to retrieve the same order in his iPad). I have searched across the Apple documentation, but did not find any PHAsset identifier that is shared across devices. I also tried to check if the PHImageFileURLKey , hashValue , or localIdentifier of the PHAsset where shared, but none of them are. Has someone already done

I want to be able to detect whether an image is transparent or not using the Imagick PHP extension. So far, the only luck I've been having is to run the exec() / some other command, and use the ImageMagick command line tool to achieve this. Here's what I mean: exec("identify -verbose example_transparent_image.png | grep \"Alpha\"", $output); $is_transparent = !empty($output) ? true : false; The logic is simple. Do a verbose check on the image in question: if the output contains any alpha information, that means it uses transparency. It seems that the PHP imagick extension should have this as

I've got a name clash between two different Haskell modules that want to use the same infix operator ( <*> ). The Haskell 98 report says that modid.varsym is permitted, but I can't get it to work. In their entirety here are Test.hs : module Test where import qualified Test2 as T three = T.<*> and Test2.hs : module Test2 where (<*>) = 3 But trying to compile results in an error message: Test.hs:6:12: parse error on input `T.<*>' I tried T.(<*>) but that doesn't work either. How can I refer to a symbolic name defined in a module imported by import qualified ? try three = (T.<*>) It's weird to

I read this about class in the C++ standard document: A class is a type. Its name becomes a class-name (9.1) within its scope. class-name: identifier template-id I found this grammar for an identifier in the C++ Standard: 2.10 Identifiers identifier: nondigit identifier nondigit identifier digit nondigit: one of universal-character-name _ a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z digit: one of 0 1 2 3 4 5 6 7 8 9 Now I tried doing this: class { public: int i; }; and it compiles fine without any name. Can anyone give me an

My app has just been rejected with the following message: PLA 3.3.12 We found that your app uses the iOS Advertising Identifier but does not include ad functionality. This does not comply with the terms of the iOS Developer Program License Agreement, as required by the App Store Review Guidelines. Specifically, section 3.3.12 of the iOS Developer Program License Agreement states: "You and Your Applications (and any third party with whom you have contracted to serve advertising) may use the Advertising Identifier, and any information obtained through the use of the Advertising Identifier, only