foundation-0.0.29: Alternative prelude with batteries and no dependencies
License BSD-style
Maintainer foundation
Stability experimental
Portability portable
Safe Haskell None
Language Haskell2010

Foundation.System.Info

Description

Synopsis

Operation System info

data OS Source #

Instances

Instances details
Bounded OS Source #
Instance details

Defined in Foundation.System.Info

Enum OS Source #
Instance details

Defined in Foundation.System.Info

Eq OS Source #
Instance details

Defined in Foundation.System.Info

Data OS Source #
Instance details

Defined in Foundation.System.Info

Methods

gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> OS -> c OS Source #

gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c OS Source #

toConstr :: OS -> Constr Source #

dataTypeOf :: OS -> DataType Source #

dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c OS ) Source #

dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c OS ) Source #

gmapT :: ( forall b. Data b => b -> b) -> OS -> OS Source #

gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> OS -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> OS -> r Source #

gmapQ :: ( forall d. Data d => d -> u) -> OS -> [u] Source #

gmapQi :: Int -> ( forall d. Data d => d -> u) -> OS -> u Source #

gmapM :: Monad m => ( forall d. Data d => d -> m d) -> OS -> m OS Source #

gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> OS -> m OS Source #

gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> OS -> m OS Source #

Ord OS Source #
Instance details

Defined in Foundation.System.Info

Show OS Source #
Instance details

Defined in Foundation.System.Info

os :: Either [ Char ] OS Source #

get the operating system on which the program is running.

Either return the known OS or a strict String of the OS name.

This function uses the base 's os function.

CPU info

data Arch Source #

Enumeration of the known GHC supported architecture.

Instances

Instances details
Bounded Arch Source #
Instance details

Defined in Foundation.System.Info

Enum Arch Source #
Instance details

Defined in Foundation.System.Info

Eq Arch Source #
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Defined in Foundation.System.Info

Data Arch Source #
Instance details

Defined in Foundation.System.Info

Methods

gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> Arch -> c Arch Source #

gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c Arch Source #

toConstr :: Arch -> Constr Source #

dataTypeOf :: Arch -> DataType Source #

dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c Arch ) Source #

dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c Arch ) Source #

gmapT :: ( forall b. Data b => b -> b) -> Arch -> Arch Source #

gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> Arch -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> Arch -> r Source #

gmapQ :: ( forall d. Data d => d -> u) -> Arch -> [u] Source #

gmapQi :: Int -> ( forall d. Data d => d -> u) -> Arch -> u Source #

gmapM :: Monad m => ( forall d. Data d => d -> m d) -> Arch -> m Arch Source #

gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> Arch -> m Arch Source #

gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> Arch -> m Arch Source #

Ord Arch Source #
Instance details

Defined in Foundation.System.Info

Show Arch Source #
Instance details

Defined in Foundation.System.Info

arch :: Either [ Char ] Arch Source #

get the machine architecture on which the program is running

Either return the known architecture or a Strict String of the architecture name.

This function uses the base 's arch function.

cpus :: IO Int Source #

returns the number of CPUs the machine has

endianness :: Endianness Source #

endianness of the current architecture

Compiler info

compilerName :: String Source #

get the compiler name

get the compilerName from base package but convert it into a strict String

compilerVersion :: Version Source #

The version of compilerName with which the program was compiled or is being interpreted.

data Version Source #

A Version represents the version of a software entity.

An instance of Eq is provided, which implements exact equality modulo reordering of the tags in the versionTags field.

An instance of Ord is also provided, which gives lexicographic ordering on the versionBranch fields (i.e. 2.1 > 2.0, 1.2.3 > 1.2.2, etc.). This is expected to be sufficient for many uses, but note that you may need to use a more specific ordering for your versioning scheme. For example, some versioning schemes may include pre-releases which have tags "pre1" , "pre2" , and so on, and these would need to be taken into account when determining ordering. In some cases, date ordering may be more appropriate, so the application would have to look for date tags in the versionTags field and compare those. The bottom line is, don't always assume that compare and other Ord operations are the right thing for every Version .

Similarly, concrete representations of versions may differ. One possible concrete representation is provided (see showVersion and parseVersion ), but depending on the application a different concrete representation may be more appropriate.

Constructors

Version

Fields

  • versionBranch :: [ Int ]

    The numeric branch for this version. This reflects the fact that most software versions are tree-structured; there is a main trunk which is tagged with versions at various points (1,2,3...), and the first branch off the trunk after version 3 is 3.1, the second branch off the trunk after version 3 is 3.2, and so on. The tree can be branched arbitrarily, just by adding more digits.

    We represent the branch as a list of Int , so version 3.2.1 becomes [3,2,1]. Lexicographic ordering (i.e. the default instance of Ord for [Int] ) gives the natural ordering of branches.

  • versionTags :: [ String ]

    A version can be tagged with an arbitrary list of strings. The interpretation of the list of tags is entirely dependent on the entity that this version applies to.

Instances

Instances details
IsList Version

Since: base-4.8.0.0

Instance details

Defined in GHC.Exts

Associated Types

type Item Version Source #

Eq Version

Since: base-2.1

Instance details

Defined in Data.Version

Data Version

Since: base-4.7.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> Version -> c Version Source #

gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c Version Source #

toConstr :: Version -> Constr Source #

dataTypeOf :: Version -> DataType Source #

dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c Version ) Source #

dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c Version ) Source #

gmapT :: ( forall b. Data b => b -> b) -> Version -> Version Source #

gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> Version -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> Version -> r Source #

gmapQ :: ( forall d. Data d => d -> u) -> Version -> [u] Source #

gmapQi :: Int -> ( forall d. Data d => d -> u) -> Version -> u Source #

gmapM :: Monad m => ( forall d. Data d => d -> m d) -> Version -> m Version Source #

gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> Version -> m Version Source #

gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> Version -> m Version Source #

Ord Version

Since: base-2.1

Instance details

Defined in Data.Version

Read Version

Since: base-2.1

Instance details

Defined in Data.Version

Show Version

Since: base-2.1

Instance details

Defined in Data.Version

Generic Version

Since: base-4.9.0.0

Instance details

Defined in Data.Version

type Rep Version
Instance details

Defined in Data.Version

type Item Version
Instance details

Defined in GHC.Exts