Moduleekg-core-0.1.2.0Haskell2010

System.Metrics.Label

This module defines a type for mutable, string-valued labels. Labels are variable values and can be used to track e.g. the command line arguments or other free-form values. All operations on labels are thread-safe.

1 type
4 values

Packageekg-core-0.1.2.0
Exports5
LanguageHaskell2010
LicenceBSD-3-Clause
SourceLabel.hs

newtypenewtype Label

A mutable, text-valued label.

valuenew :: IO Label

Create a new empty label.

valueread :: Label -> IO Text

Get the current value of the label.

valueset :: Label -> Text -> IO ()

Set the label to the given value.

valuemodify :: (Text -> Text) -> Label -> IO ()

Set the label to the result of applying the given function to the value.