Question

通过api将表达式发送到ghci进行评估和打印结果的最简单的例子是什么？我无法找到一个可行的完整示例。是的，我已经尝试了https://wiki.haskell.org/GHC/As_a_library，但我一直收到的错误并没有告诉我多少：setSessionDynFlags。无论我在哪里尝试使用任何参数setContext，或setXYZ，我总是会遇到错误。我目前有（没有import GHC import GHC.Paths ( libdir ) import GhcMonad import Debugger import DynFlags import Outputable import Language.Haskell.HsColour import Language.Haskell.HsColour.Colourise colour :: String -> String colour = hscolour TTY defaultColourPrefs True True "" False ghci :: IO () ghci = runGhc (Just libdir) $ do r <- runStmt "[1, 2, 3]" RunToCompletion case r of RunOk ns -> do mapM_ ( \n -> do mty <- lookupName n case mty of Just (AnId id) -> do t <- obtainTermFromId maxBound True id fl <- getSessionDynFlags liftIO $ putStrLn $ colour $ show $ withPprStyleDoc fl defaultUserStyle $ ppr t return () otherwise -> return () ) ns otherwise -> return () main :: IO () main = ghci）：

SELECT (COUNT(*)-(COUNT(*)%3)) FROM tbl_name INTO @lim;

SELECT @rownum := 0;

SELECT t.*, @rownum := @rownum + 1 AS rowno FROM tbl_name t WHERE rowno <= @lim;

Answer 1

所以当我在tv1.setText(ccObj1.getIssuer() + "\n" +ccObj1.getName()+"\n" +ccObj1.getCardnum()+"\n" +ccObj1.getExpire()+"\n" +Double.toString(ccObj1.getBal())+"\n" +Double.toString(ccObj1.getLimit()+"\n");表达式的开头添加此初始化时，我的问题就解决了：{/ 1}}

SELECT * FROM myTab WHERE TO_CHAR(startDate,'dd.mm.yyyy') LIKE '%01.2015'

使用GHC作为库

1 个答案: