Kernel:
In [0]:
That above is an infix function, but you can also define your own function like that:
In [2]:
In [3]:
4
In [4]:
1090
Reduce operations (reduce()
in python, etc.) are foldl
.
This function takes the first function, the starting value, and folds the function by adding it from the left.
In [5]:
5050
Here, the tutorial shows me how to define the infamous fib
function … otherwise
is actually just true
and hence always the last fallthrough case.
In [6]:
5-th fibonacci number is 8 (well, we're the cool guys, and count from 0)
In [7]:
8
Use show
to print a string and "."-combine this via a $
-sign (for lowering the precedence) to apply the argument to the fib
function.
In [8]:
"1"
"1"
"2"
map
applies a function over a list -- where the ..
create it in a lazy fashion ...
In [9]:
[1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946]
In [0]:
Linear Algebra via hmatrix
In [10]:
In [11]:
2x2
1 2
3 4
In [12]:
2x1
5
6
In [13]:
Just (2><1)
[ -3.9999999999999987
, 4.499999999999999 ]
In [14]:
(5><3)
[ 1.0, 2.0, 3.0
, 4.0, 5.0, 6.0
, 7.0, 8.0, 9.0
, 10.0, 11.0, 12.0
, 13.0, 14.0, 15.0 ]
In [15]:
In [16]:
5x5
-0.101 0.768 0.614 -0.105 0.110
-0.249 0.488 -0.696 0.185 0.426
-0.396 0.208 -0.274 -0.453 -0.721
-0.543 -0.072 0.180 0.770 -0.274
-0.690 -0.352 0.176 -0.397 0.460
In [0]:
Installed Libraries
In [17]:
* Cabal
Synopsis: A framework for packaging Haskell software
Default available version: 2.2.0.1
Installed versions: 1.24.2.0
Homepage: http://www.haskell.org/cabal/
License: BSD3
* array
Synopsis: Mutable and immutable arrays
Default available version: 0.5.2.0
Installed versions: 0.5.1.1
License: BSD3
* base
Synopsis: Basic libraries
Default available version: 4.11.1.0
Installed versions: 4.9.1.0
License: BSD-3-Clause
* binary
Synopsis: Binary serialisation for Haskell values using lazy ByteStrings
Default available version: 0.8.6.0
Installed versions: 0.8.3.0
Homepage: https://github.com/kolmodin/binary
License: BSD3
* bytestring
Synopsis: Fast, compact, strict and lazy byte strings with a list interface
Default available version: 0.10.8.2
Installed versions: 0.10.8.1
Homepage: https://github.com/haskell/bytestring
License: BSD3
* containers
Synopsis: Assorted concrete container types
Default available version: 0.6.0.1
Installed versions: 0.5.7.1
License: BSD3
* deepseq
Synopsis: Deep evaluation of data structures
Default available version: 1.4.3.0
Installed versions: 1.4.2.0
License: BSD3
* directory
Synopsis: Platform-agnostic library for filesystem operations
Default available version: 1.3.3.1
Installed versions: 1.3.0.0
License: BSD3
* filepath
Synopsis: Library for manipulating FilePaths in a cross platform way.
Default available version: 1.4.2.1
Installed versions: 1.4.1.1
Homepage: https://github.com/haskell/filepath#readme
License: BSD3
* ghc
Synopsis: The GHC API
Default available version: 8.4.3
Installed versions: 8.0.2
Homepage: http://www.haskell.org/ghc/
License: BSD3
* ghc-boot
Synopsis: Shared functionality between GHC and its boot libraries
Default available version: 8.4.3
Installed versions: 8.0.2
License: BSD3
* ghc-boot-th
Synopsis: Shared functionality between GHC and the @template-haskell@
library
Default available version: 8.4.3
Installed versions: 8.0.2
License: BSD3
* ghc-prim
Synopsis: GHC primitives
Default available version: 0.5.2.0
Installed versions: 0.5.0.0
License: BSD-3-Clause
* ghci
Synopsis: The library supporting GHC's interactive interpreter
Default available version: 8.4.3
Installed versions: 8.0.2
License: BSD3
* haskeline
Synopsis: A command-line interface for user input, written in Haskell.
Default available version: 0.7.4.3
Installed versions: 0.7.3.0
Homepage: https://github.com/judah/haskeline
License: BSD3
* hoopl
Synopsis: A library to support dataflow analysis and optimization
Default available version: 3.10.2.2
Installed versions: 3.10.2.1
Homepage: https://github.com/haskell/hoopl
License: BSD3
* hpc
Synopsis: Code Coverage Library for Haskell
Default available version: 0.6.0.3
Installed versions: 0.6.0.3
License: BSD3
* integer-gmp
Synopsis: Integer library based on GMP
Default available version: 1.0.2.0
Installed versions: 1.0.0.1
License: BSD3
* pretty
Synopsis: Pretty-printing library
Default available version: 1.1.3.6
Installed versions: 1.1.3.3
Homepage: http://github.com/haskell/pretty
License: BSD3
* process
Synopsis: Process libraries
Default available version: 1.6.4.0
Installed versions: 1.4.3.0
License: BSD3
* rts
Default available version: [ Not available from any configured repository ]
Installed versions: 1.0
License: BSD3
* template-haskell
Synopsis: Support library for Template Haskell
Default available version: 2.13.0.0
Installed versions: 2.11.1.0
License: BSD3
* terminfo
Synopsis: Haskell bindings to the terminfo library.
Default available version: 0.4.1.2
Installed versions: 0.4.0.2
Homepage: https://github.com/judah/terminfo
License: BSD3
* time
Synopsis: A time library
Default available version: 1.9.2
Installed versions: 1.6.0.1
Homepage: https://github.com/haskell/time
License: BSD3
* transformers
Synopsis: Concrete functor and monad transformers
Default available version: 0.5.5.0
Installed versions: 0.5.2.0
License: BSD3
* unix
Synopsis: POSIX functionality
Default available version: 2.7.2.2
Installed versions: 2.7.2.1
Homepage: https://github.com/haskell/unix
License: BSD3
* xhtml
Synopsis: An XHTML combinator library
Default available version: 3000.2.2.1
Installed versions: 3000.2.1
Homepage: https://github.com/haskell/xhtml
License: BSD3
In [0]: