Returns True when the value is an empty string, empty list, zero UUID, etc.

Returns the field value for a field name

Example:

data Project = Project { name :: Text, isPublic :: Bool }

let project = Project { name = "Hello World", isPublic = False }

>>> get #name project
"Hello World"

>>> get #isPublic project
False

Sets a field of a record and returns the new record.

Example:

data Project = Project { name :: Text, isPublic :: Bool }

let project = Project { name = "Hello World", isPublic = False }

>>> set #name "New Name" project
Project { name = "New Name", isPublic = False }

>>> set #isPublic True project
Project { name = "Hello World", isPublic = True }

Like set but wraps the value with a Just. Useful when you want to set a Maybe field

Example:

data Project = Project { name :: Maybe Text }

let project = Project { name = Nothing }

>>> setJust #name "New Name" project
Project { name = Just "New Name" }

Plus 1 on record field.

Example:

data Project = Project { name :: Text, followersCount :: Int }

let project = Project { name = "Hello World", followersCount = 0 }

>>> project |> incrementField #followersCount
Project { name = "Hello World", followersCount = 1 }

Minus 1 on a record field.

Example:

data Project = Project { name :: Text, followersCount :: Int }

let project = Project { name = "Hello World", followersCount = 1337 }

>>> project |> decrementField #followersCount
Project { name = "Hello World", followersCount = 1336 }

Example: forEach users user -> putStrLn (tshow user)

Example: forEachWithIndex users (index, user) -> putStrLn (tshow user)

Parses a text to an int. Returns Nothing on failure.

Example:

>>> textToInt "1337"
Just 1337

>>> textToInt "bad input"
Nothing

Returns True when day is Saturday or Sunday.

Example:

>>> isWeekend $ fromGregorian 2019 10 7
False

>>> isWeekend $ fromGregorian 2020 6 13
True

Returns True when today is Saturday or Sunday.

Example:

do
    todayIsWeekend <- isWeekend
    when todayIsWeekend (putStrLn "It's weekend!")

Debug-print a value during evaluation

Alias for traceShowId

Removes all html tags from a given html text

>>> stripTags "This is <b>Bold</b>"
"This is Bold"

Returns the value of a type level symbol as a text

>>> symbolToText @"hello"
"hello"

>>> symbolToText @(GetTableName User)
"users"

Returns the value of a type level symbol as a bytestring

>>> symbolToByteString @"hello"
"hello"

>>> symbolToByteString @(GetTableName User)
"users"

Used by nonEmpty and isEmptyValue to check for emptyness