| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Text.Format
Description
Format string with named args
-- Named args
"My name is {name}, I am {age} years old" ~~ ("name" %= "Joe") ~~ ("age" %= 24) ≡ "My name is Joe, I am 24 years old"
-- Arg can have default value
"{var:x} = {val:10}" ~~ ("var" %= y) ≡ "y = 10"
-- Numeric position can be used
"{0} {1} {0}" ~~ "foo" ~~ "bar" ≡ "foo bar foo"
-- Positions can be omitted
"{} {}" ~~ "foo" ~~ 10 ≡ "foo 10"
-- Double braces to escape them
"{} and {{}}" ~~ 10 ≡ "10 and {}"- data FormatArg
- data Format = Format {
- formatString :: String
- formatArgs :: [FormatArg]
- data Formatter = Formatter {}
- build :: Format -> Text
- class FormatBuild a where
- formatBuild :: a -> Builder
- class Hole a where
- fmt :: Hole a => a -> [FormatArg]
- class FormatResult r where
- formatResult :: Format -> r
- format :: FormatResult r => String -> r
- (~~) :: (Hole a, FormatResult r) => Format -> a -> r
- (%=) :: FormatBuild a => String -> a -> [FormatArg]
Documentation
Constructors
| FormatNamed String Builder | |
| FormatPos Builder |
Constructors
| Format | |
Fields
| |
class FormatBuild a where Source
FormatBuild class, by default using show
Minimal complete definition
Nothing
Methods
formatBuild :: a -> Builder Source
format :: FormatResult r => String -> r Source
(~~) :: (Hole a, FormatResult r) => Format -> a -> r infixl 7 Source
(%=) :: FormatBuild a => String -> a -> [FormatArg] infixr 8 Source