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How to print and read at in the same line in Haskell?


By : aplcr
Date : October 16 2020, 08:10 PM
hope this fix your issue You can use putStr function to print message without newline at the end as:
code :
import System.IO

main = do hSetBuffering stdout NoBuffering
          putStr "Type your age: "
          age <- readLn::IO Int
          return ()


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How to read a file line by line, then print the line if it contains a string with a range of value in Python?


By : Udit Jain
Date : March 29 2020, 07:55 AM
it helps some times You have a CSV file; use the csv module:
code :
import csv

with open('filename.csv', 'rb') as f:
    reader = csv.reader(f, delimiter='#')
    for row in reader:
amount = float(row[7])
with open('filename.csv', 'rb') as f:
    reader = csv.reader(f, delimiter='#')
    for row in reader:
        amount = float(row[7])
        if amount <= 1500:
            print row

Haskell - Read a single int from a file and print it


By : Mhzel
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further First, observe that reading stuff and then immediately printing it can result in mysterious errors:
code :
GHCi, version 8.0.0.20160421: http://www.haskell.org/ghc/  :? for help
Prelude λ read "123"
*** Exception: Prelude.read: no parse
Prelude λ read "123" :: Integer
123
Prelude λ let readInteger = read :: String -> Integer
Prelude λ readInteger "123"
123
line <- hGetLine inputFile
let isbn = readInteger line

How to read/ add/ print a number string in Haskell


By : user2136043
Date : March 29 2020, 07:55 AM
seems to work fine It seems you either need an auxiliary recursive function for reading num integers, or some helper like replicateM, which makes writing the code a little easier.
replicateM num action runs action exactly num times, and collects all the action results in a list.
code :
main = do
    putStrLn "Enter how many numbers:" -- clearer
    num<-getLine
    numbers <- replicateM num $ do
       putStrLn("Enter a number: ")
       numberString <- getLine
       return (read numberString :: Int)
    -- here we have numbers :: [Int]
    ...
readInts :: Int -> IO [Int]
readInts 0 = return []
readInts n = do
    putStrLn("Enter a number: ")
    numberString <- getLine
    otherNumbers <- readInts (n-1)   -- read the rest
    return (read numberString : otherNumbers)

How to read through a file line by line and from each line selectively print the text based on the delimiters used


By : benfrencnchh
Date : March 29 2020, 07:55 AM
around this issue I have a file (application.txt) containing lines in the below format: , Assumes your file is strictly adhering to the format you posted.
code :
with open('application.txt') as f:
    for line in f:
        parts = line.split("|")
        print(f"{parts[0]}: {parts[2]}")

How do I read numbers from a file, sum them and print them in Haskell?


By : nawaz uddin
Date : March 29 2020, 07:55 AM
will help you There is sum in Data.List and the Prelude (http://hackage.haskell.org/package/base-4.8.2.0/docs/Prelude.html#v:sum)
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