Difference between revisions of "Pronunciation"
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−  +  There was a thread on HaskellCafe about [http://www.haskell.org/pipermail/haskellcafe/2008January/038756.html how to pronounce Haskell].  
−  +  Below are some notes for beginners on how to pronounce those strange Haskell operators and 'read' Haskell programs.  
−  This  +  This is meant to be a table with formal and informal ways of saying various operators and code snippets. 
{  {  
! Symbol  ! Symbol  
−  !  +  ! Pronunciation 
+  ! References  
    
−   <hask> > </hask>  +   <hask>::</hask> 
+   has type (in definitions); at type (in expressions or patterns)  
+    
+   <hask>></hask>  
 maps to, to   maps to, to  
    
−   <hask> = </hask>  +   <hask>=</hask> 
 is   is  
    
−   <hask> == </hask>  +   <hask>==</hask> 
 equals   equals  
+   [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3A6161 Prelude]  
    
−   <hask> /= </hask>  +   <hask>/=</hask> 
−   not  +   not equals 
+   [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3A6161 Prelude]  
    
−   <hask> => </hask>  +   <hask>=></hask> 
 is a witness for, implies   is a witness for, implies  
+   [http://www.haskell.org/tutorial/classes.html Type Classes and Overloading]  
    
−   <hask> . </hask>  +   <hask>.</hask> 
 dot (could be used anywhere, but especially in, for example, Data.Char.ord), ring, compose (for example, negate . (+1)), (silent) (for example, forall a. (Num a) => a)   dot (could be used anywhere, but especially in, for example, Data.Char.ord), ring, compose (for example, negate . (+1)), (silent) (for example, forall a. (Num a) => a)  
    
−   <hask> < </hask>  +   <hask><</hask> 
 drawn from, from   drawn from, from  
    
−   <hask> < </hask>  +   <hask><</hask> 
−    +   arrow application 
+   [http://haskell.org/arrows/syntax.html Arrows syntax]  
+    
+   <hask>&&&</hask>  
+   both, fanout  
+   [http://www.haskell.org/ghc/docs/latest/html/libraries/base/ControlArrow.html Control.Arrow]  
+    
+   <hask></hask>  
+   either, fanin  
+   [http://www.haskell.org/ghc/docs/latest/html/libraries/base/ControlArrow.html#v%3A%7C%7C%7C Control.Arrow]  
+    
    
−   <hask> ++ </hask>  +   <hask>++</hask> 
 append   append  
+   [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3A4343 Prelude]  
    
−   <hask> >>= </hask>  +   <hask>>>=</hask> 
 bind   bind  
+   [http://www.haskell.org/tutorial/monads.html About monads], [[Monads as containers]]  
+    
+   <hask>>></hask>  
+   then, sequence  
+   [http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v:6262 Prelude]  
    
−   <hask>  +   <hask><*></hask> 
−    +   applied over 
+   [http://www.haskell.org/haskellwiki/Applicative_functor Applicative Functors]  
    
−   <hask> \ </hask>  +   <hask><></hask> 
+   or/alternative  
+   [https://hackage.haskell.org/package/base4.12.0.0/docs/ControlApplicative.html#t:Alternative]  
+    
+   <hask>\</hask>  
 lambda   lambda  
+   [[Lambda abstraction]], [http://www.haskell.org/onlinereport/exps.html#sect3.3 Haskell 98 Report]  
+    
+   <hask>!</hask>  
+   bang; strict (in patterns or data definitions); index (in expressions)  
+   {{GHCUsersGuideexts/stricta section on Bang Patterns}}  
    
−   <hask> : </hask>  +   <hask>~</hask> 
+   irrefutable, lazy (in patterns)  
+    
+   <hask>:</hask>  
 cons   cons  
    
−  +   <hask>[]</hask>  
−  
−  
−   <hask> [] </hask>  
 nil   nil  
    
−   <hask> () </hask>  +   <hask>()</hask> 
 unit   unit  
    
−   <hask> (,) </hask>  +   <hask>(,)</hask> 
 2tuple, pair   2tuple, pair  
    
−   <hask> (a,b,c) </hask>  +   <hask>(a,b,c)</hask> 
 [3]tuple [of] a, b, and c   [3]tuple [of] a, b, and c  
+    
+   <hask>({)}</hask>  
+   just as inconvenient to convey grouping verbally, whether it's layout or punctuation  
}  }  
{  {  
! Example  ! Example  
−  !  +  ! Pronunciation 
    
 <hask>f :: Int > Int</hask>   <hask>f :: Int > Int</hask>  
Line 72:  Line 108:  
}  }  
−  +  Thoughts on improving this page:  
+  
+  The tables above would be best split into more columns to distinguish Informal, possibly bad suggestions like "then", "is", "gets", from Formal correct ways of saying the same thing. The Symbols could also be named in a literal way in another column, such as "arrow" or "doublecolon". The Description column can be quite brief and a link provided to the relevant wiki page for the operator.  
+  Some words, particularly the informal ones, may be good for several different symbols, but these can hopefully be arranged so that their context will make them unambiguous when reading a code snippet.  
[[Category:Syntax]]  [[Category:Syntax]] 
Latest revision as of 23:05, 24 July 2021
There was a thread on HaskellCafe about how to pronounce Haskell.
Below are some notes for beginners on how to pronounce those strange Haskell operators and 'read' Haskell programs.
This is meant to be a table with formal and informal ways of saying various operators and code snippets.
Symbol  Pronunciation  References  

::

has type (in definitions); at type (in expressions or patterns)  
>

maps to, to  
=

is  
==

equals  Prelude  
/=

not equals  Prelude  
=>

is a witness for, implies  Type Classes and Overloading  
.

dot (could be used anywhere, but especially in, for example, Data.Char.ord), ring, compose (for example, negate . (+1)), (silent) (for example, forall a. (Num a) => a)  
<

drawn from, from  
<

arrow application  Arrows syntax  
&&&

both, fanout  Control.Arrow  


either, fanin  Control.Arrow  
++

append  Prelude  
>>=

bind  About monads, Monads as containers  
>>

then, sequence  Prelude  
<*>

applied over  Applicative Functors  
<>

or/alternative  [1]  
\

lambda  Lambda abstraction, Haskell 98 Report  
!

bang; strict (in patterns or data definitions); index (in expressions)  The GHC Users Guide has a section on Bang Patterns.  
~

irrefutable, lazy (in patterns)  
:

cons  
[]

nil  
()

unit  
(,)

2tuple, pair  
(a,b,c)

[3]tuple [of] a, b, and c  
({)}

just as inconvenient to convey grouping verbally, whether it's layout or punctuation 
Example  Pronunciation 

f :: Int > Int

f has type Int to Int 
Thoughts on improving this page:
The tables above would be best split into more columns to distinguish Informal, possibly bad suggestions like "then", "is", "gets", from Formal correct ways of saying the same thing. The Symbols could also be named in a literal way in another column, such as "arrow" or "doublecolon". The Description column can be quite brief and a link provided to the relevant wiki page for the operator.
Some words, particularly the informal ones, may be good for several different symbols, but these can hopefully be arranged so that their context will make them unambiguous when reading a code snippet.