cloud-filesystem | Cloud FileSystem is an attempted RESTful web API | REST library

void foo() {
    int i = 0; // complete object, but not most-derived (not class type)
}

class A {
   int i = 0; // non complete object, not most-derived
}

void bar() {
    A a; // complete object, but not derived, so can't be "most derived"
}

class B : A { }

void biz() {
   B b; // complete object, derived object, and most-derived object
}

MostDerived md;

from itertools import dropwhile

p = [4,9,10,4,20,13,29,3,39]

p = dropwhile(lambda x: x <= 18, p)
print(*p) # 20 13 29 3 39

exceeded = False
p = [x for x in p if (exceeded := exceeded or x > 18)]
print(p) # [20, 13, 29, 3, 39]

for i, x in enumerate(p):
    if x > 18:
        output = p[i:]
        break
else:
    output = [] # alternatively just put output = [] before for

for event in data:
    match event:
        case {'id': x} if x.startswith("matchme"): # guard
            print(event["message"])
        case {'id':'anotherid'}:
            print(event["message"])

match point:
     case Point(x, y) if x == y:
         print(f"The point is located on the diagonal Y=X at {x}.")
     case Point(x, y):
         print(f"Point is not on the diagonal.")

const CustomRoute = ({ isLoggedIn, ...props }) => {
  const location = useLocation();
  return isLoggedIn? (
    
  ) : (
    
  );
};

const CustomWrapper = ({ isLoggedIn, ...props }) => {
  const location = useLocation();
  return isLoggedIn? (
    
  ) : (
    
  )
};

} >
  } />

from django.test import TestCase, Client


def TestCase():
   client.login(username=self.username, password=self.password)

    def login(self, **credentials):
        """
        Set the Factory to appear as if it has successfully logged into a site.
        Return True if login is possible or False if the provided credentials
        are incorrect.
        """
        from django.contrib.auth import authenticate
        user = authenticate(**credentials)
        if user:
            self._login(user)
            return True
        return False

    def force_login(self, user, backend=None):
        def get_backend():
            from django.contrib.auth import load_backend
            for backend_path in settings.AUTHENTICATION_BACKENDS:
                backend = load_backend(backend_path)
                if hasattr(backend, 'get_user'):
                    return backend_path

        if backend is None:
            backend = get_backend()
        user.backend = backend
        self._login(user, backend)

    def _login(self, user, backend=None):
        from django.contrib.auth import login

        # Create a fake request to store login details.
        request = HttpRequest()
        if self.session:
            request.session = self.session
        else:
            engine = import_module(settings.SESSION_ENGINE)
            request.session = engine.SessionStore()
        login(request, user, backend)
        # Save the session values.
        request.session.save()
        # Set the cookie to represent the session.
        session_cookie = settings.SESSION_COOKIE_NAME
        self.cookies[session_cookie] = request.session.session_key
        cookie_data = {
            'max-age': None,
            'path': '/',
            'domain': settings.SESSION_COOKIE_DOMAIN,
            'secure': settings.SESSION_COOKIE_SECURE or None,
            'expires': None,
        }
        self.cookies[session_cookie].update(cookie_data)

   1,483,547,096 bytes allocated in the heap
         566,448 bytes copied during GC
      18,703,640 bytes maximum residency (3 sample(s))
       1,223,400 bytes maximum slop
              32 MiB total memory in use (0 MB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0      1399 colls,     0 par    0.009s   0.009s     0.0000s    0.0011s
  Gen  1         3 colls,     0 par    0.002s   0.002s     0.0006s    0.0016s

  TASKS: 4 (1 bound, 3 peak workers (3 total), using -N1)

  SPARKS: 0 (0 converted, 0 overflowed, 0 dud, 0 GC'd, 0 fizzled)

  INIT    time    0.001s  (  0.001s elapsed)
  MUT     time    0.484s  (  0.517s elapsed)
  GC      time    0.011s  (  0.011s elapsed)
  EXIT    time    0.001s  (  0.002s elapsed)
  Total   time    0.496s  (  0.530s elapsed)

import Control.Monad.ST
import Control.Monad
import qualified Data.ByteString as BS
import Data.Massiv.Array as A hiding (B)
import Data.Massiv.Array.Mutable.Algorithms (quicksortByM_)
import Control.Scheduler (trivialScheduler_)

main :: IO ()
main = do
  t <- Prelude.read <$> getLine
  when (t < 1 || t > 1000) $ error $ "Invalid t: " ++ show t
  replicateM_ t $ do
    dimsStr <- getLine
    case Prelude.map Prelude.read (words dimsStr) of
      -- Test file fails this check: && n * m <= 10 ^ (6 :: Int) -> do
      [n, m] | n >= 2 && m > 0 && m <= 5 * 10 ^ (5 :: Int) -> do
        mat <- readMatrix n m
        case solve mat of
          Nothing -> putStrLn "NO"
          Just (ix, cs) -> do
            putStrLn "YES"
            putStr $ foldMap show cs
            putStr " "
            print ix
      _ -> putStrLn $ "Unexpected dimensions: " ++ show dimsStr

type Val = Word

readMatrix :: Int -> Int -> IO (Matrix P Val)
readMatrix n m = createArrayS_ (Sz2 n m) readMMatrix

readMMatrix :: MMatrix RealWorld P Val -> IO ()
readMMatrix mat =
  loopM_ 0 (< n) (+ 1) $ \i -> do
    line <- BS.getLine
    --- ^ reads at most 10Mb because it is known that input will be at most
    -- 5*10^5 Words: 19 digits max per Word and one for space: 5*10^5 * 20bytes
    loopM 0 (< m) (+ 1) line $ \j bs ->
      let (word, bs') = parseWord bs
       in bs' <$ write_ mat (i :. j) word
  where
    Sz2 n m = sizeOfMArray mat
    isSpace = (== 32)
    isDigit w8 = w8 >= 48 && w8 <= 57
    parseWord bs =
      case BS.uncons bs of
        Just (w8, bs')
          | isDigit w8 -> parseWordLoop (fromIntegral (w8 - 48)) bs'
          | otherwise -> error $ "Unexpected byte: " ++ show w8
        Nothing -> error "Unexpected end of input"
    parseWordLoop !acc bs =
      case BS.uncons bs of
        Nothing -> (acc, bs)
        Just (w8, bs')
          | isSpace w8 -> (acc, bs')
          | isDigit w8 -> parseWordLoop (acc * 10 + fromIntegral (w8 - 48)) bs'
          | otherwise -> error $ "Unexpected byte: " ++ show w8

computeSortBy ::
     (Load r Ix1 e, Manifest r' e)
  => (e -> e -> Ordering)
  -> Vector r e
  -> Vector r' e
computeSortBy f vec = 
  withLoadMArrayST_ vec $ quicksortByM_ (\x y -> pure $ f x y) trivialScheduler_

solve :: Matrix P Val -> Maybe (Int, [Color])
solve a = runST $ do
  let sz@(Sz2 n m) = size a
      ord :: Vector P Int
      ord = computeSortBy 
              (\x y -> compare (a ! (y :. 0)) (a ! (x :. 0))) (0 ..: n)
  mxl <- newMArray @P sz minBound
  loopM_ (n - 1) (>= 0) (subtract 1) $ \ i ->
    loopM_ 0 (< m) (+ 1) $ \j -> do
      writeM mxl (i :. j) (a ! ((ord ! i) :. j))
      when (i < n - 1) $
        writeM mxl (i :. j) 
          =<< max <$> readM mxl (i :. j) <*> readM mxl (i + 1 :. j)
      when (j > 0) $
        writeM mxl (i :. j) 
          =<< max <$> readM mxl (i :. j) <*> readM mxl (i :. j - 1)
  mnr <- newMArray @P sz maxBound
  loopM_ (n - 1) (>= 0) (subtract 1) $ \ i ->
    loopM_ (m - 1) (>= 0) (subtract 1) $ \ j -> do
      writeM mnr (i :. j) (a ! ((ord ! i) :. j))
      when (i < n - 1) $
        writeM mnr (i :. j) 
          =<< min <$> readM mnr (i :. j) <*> readM mnr (i + 1 :. j)
      when (j < m - 1) $
        writeM mnr (i :. j) 
          =<< min <$> readM mnr (i :. j) <*> readM mnr (i :. j + 1)
  mnl <- newMArray @P (Sz m) maxBound
  mxr <- newMArray @P (Sz m) minBound
  let goI i
        | i < n - 1 = do
          loopM_ 0 (< m) (+ 1) $ \j -> do
            val <- min (a ! ((ord ! i) :. j)) <$> readM mnl j
            writeM mnl j val
            when (j > 0) $
              writeM mnl j . min val =<< readM mnl (j - 1)
          loopM_ (m - 1) (>= 0) (subtract 1) $ \j -> do
            val <- max (a ! ((ord ! i) :. j)) <$> readM mxr j
            writeM mxr j val
            when (j < m - 1) $
              writeM mxr j . max val =<< readM mxr (j + 1)
          let goJ j
                | j < m - 1 = do
                    mnlVal <- readM mnl j
                    mxlVal <- readM mxl (i + 1 :. j)
                    mxrVal <- readM mxr (j + 1)
                    mnrVal <- readM mnr ((i + 1) :. (j + 1))
                    if mnlVal > mxlVal && mxrVal < mnrVal
                      then pure $ Just (i, j)
                      else goJ (j + 1)
                | otherwise = pure Nothing
          goJ 0 >>= \case
            Nothing -> goI (i + 1)
            Just pair -> pure $ Just pair
        | otherwise = pure Nothing
  mAns <- goI 0
  Control.Monad.forM mAns $ \ (ansFirst, ansSecond) -> do
    resVec <- createArrayS_ @BL (Sz n) $ \res ->
        iforM_ ord $ \i ordIx -> do
          writeM res ordIx $! if i <= ansFirst then R else B
    pure (ansSecond + 1, A.toList resVec)

type Structure = {
    user: {
        name: string,
        surname: string
    }
}

type BlackMagic= T

// user.name | user.surname
type Result=BlackMagic

type Structure = {
    user: {
        arr: [1, 2],
    }
}

type BlackMagic = T

// "user.arr" | "user.arr.0" | "user.arr.1"
type Result = BlackMagic

type Structure = {
    user: {
        arr: number[],
    }
}

type BlackMagic = T

// "user.arr" | `user.arr.${number}`
type Result = BlackMagic

type Structure = {
    user: {
        arr: [],
    }
}

type BlackMagic = T

//  "user.arr" | "user.arr.-1"
type Result = BlackMagic

type Values = T[keyof T]
{
    // 1 | "John"
    type _ = Values<{ age: 1, name: 'John' }>
}

type IsNever = [T] extends [never] ? true : false;
{
    type _ = IsNever // true 
    type __ = IsNever // false
}

type IsTuple =
    (T extends Array ?
        (T['length'] extends number
            ? (number extends T['length']
                ? false
                : true)
            : true)
        : false)
{
    type _ = IsTuple<[1, 2]> // true
    type __ = IsTuple // false
    type ___ = IsTuple<{ length: 2 }> // false
}

type IsEmptyTuple> = T['length'] extends 0 ? true : false
{
    type _ = IsEmptyTuple<[]> // true
    type __ = IsEmptyTuple<[1]> // false
    type ___ = IsEmptyTuple // false

}

/**
 * If Cache is empty return Prop without dot,
 * to avoid ".user"
 */
type HandleDot<
    Cache extends string,
    Prop extends string | number
    > =
    Cache extends ''
    ? `${Prop}`
    : `${Cache}.${Prop}`

/**
 * Simple iteration through object properties
 */
type HandleObject = {
    [Prop in keyof Obj]:
    // concat previous Cacha and Prop
    | HandleDot
    // with next Cache and Prop
    | Path>
}[keyof Obj]

type Path =
    // if Obj is primitive
    (Obj extends PropertyKey
        // return Cache
        ? Cache
        // if Obj is Array (can be array, tuple, empty tuple)
        : (Obj extends Array
            // and is tuple
            ? (IsTuple extends true
                // and tuple is empty
                ? (IsEmptyTuple extends true
                    // call recursively Path with `-1` as an allowed index
                    ? Path>
                    // if tuple is not empty we can handle it as regular object
                    : HandleObject)
                // if Obj is regular  array call Path with union of all elements
                : Path>)
            // if Obj is neither Array nor Tuple nor Primitive - treat is as object    
            : HandleObject)
    )

// "user" | "user.arr" | `user.arr.${number}`
type Test = Extract, string>

type WithDot = T extends `${string}.${string}` ? T : never

type KeysUnion =
  T extends PropertyKey ? Cache : {
    [P in keyof T]:
    P extends string
    ? Cache extends ''
    ? KeysUnion
    : Level['length'] extends 1 // if it is a higher level - proceed
    ? KeysUnion
    : Level['length'] extends 2 // stop on second level
    ? Cache | KeysUnion
    : never
    : never
  }[keyof T]

type Acc = Record

type ReducerCallback =
    El extends keyof Accumulator ? Accumulator[El] : Accumulator

type Reducer<
    Keys extends string,
    Accumulator extends Acc = {}
    > =
    // Key destructure
    Keys extends `${infer Prop}.${infer Rest}`
    // call Reducer with callback, just like in JS
    ? Reducer>
    // this is the last part of path because no dot
    : Keys extends `${infer Last}`
    // call reducer with last part
    ? ReducerCallback
    : never

{
    type _ = Reducer<'user.arr', Structure> // []
    type __ = Reducer<'user', Structure> // { arr: [] }
}

type Structure = {
    user: {
        tuple: [42],
        emptyTuple: [],
        array: { age: number }[]
    }
}


type Values = T[keyof T]
{
    // 1 | "John"
    type _ = Values<{ age: 1, name: 'John' }>
}

type IsNever = [T] extends [never] ? true : false;
{
    type _ = IsNever // true 
    type __ = IsNever // false
}

type IsTuple =
    (T extends Array ?
        (T['length'] extends number
            ? (number extends T['length']
                ? false
                : true)
            : true)
        : false)
{
    type _ = IsTuple<[1, 2]> // true
    type __ = IsTuple // false
    type ___ = IsTuple<{ length: 2 }> // false
}

type IsEmptyTuple> = T['length'] extends 0 ? true : false
{
    type _ = IsEmptyTuple<[]> // true
    type __ = IsEmptyTuple<[1]> // false
    type ___ = IsEmptyTuple // false
}

/**
 * If Cache is empty return Prop without dot,
 * to avoid ".user"
 */
type HandleDot<
    Cache extends string,
    Prop extends string | number
    > =
    Cache extends ''
    ? `${Prop}`
    : `${Cache}.${Prop}`

/**
 * Simple iteration through object properties
 */
type HandleObject = {
    [Prop in keyof Obj]:
    // concat previous Cacha and Prop
    | HandleDot
    // with next Cache and Prop
    | Path>
}[keyof Obj]

type Path =
    (Obj extends PropertyKey
        // return Cache
        ? Cache
        // if Obj is Array (can be array, tuple, empty tuple)
        : (Obj extends Array
            // and is tuple
            ? (IsTuple extends true
                // and tuple is empty
                ? (IsEmptyTuple extends true
                    // call recursively Path with `-1` as an allowed index
                    ? Path>
                    // if tuple is not empty we can handle it as regular object
                    : HandleObject)
                // if Obj is regular  array call Path with union of all elements
                : Path>)
            // if Obj is neither Array nor Tuple nor Primitive - treat is as object    
            : HandleObject)
    )

type WithDot = T extends `${string}.${string}` ? T : never


// "user" | "user.arr" | `user.arr.${number}`
type Test = WithDot, string>>



type Acc = Record

type ReducerCallback =
    El extends keyof Accumulator ? Accumulator[El] : El extends '-1' ? never : Accumulator

type Reducer<
    Keys extends string,
    Accumulator extends Acc = {}
    > =
    // Key destructure
    Keys extends `${infer Prop}.${infer Rest}`
    // call Reducer with callback, just like in JS
    ? Reducer>
    // this is the last part of path because no dot
    : Keys extends `${infer Last}`
    // call reducer with last part
    ? ReducerCallback
    : never

{
    type _ = Reducer<'user.arr', Structure> // []
    type __ = Reducer<'user', Structure> // { arr: [] }
}

type BlackMagic = T & {
    [Prop in WithDot, string>>]: Reducer
}

type Result = BlackMagic