Difference between revisions of "Z^3 Language Documentation"
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Revision as of 11:47, 21 November 2019
Motivation
The power of a language is almost entirely in the notations and simplifications that are provided. Kenneth Iverson in his paper (http://www.eecg.toronto.edu/~jzhu/csc326/readings/iverson.pdf Notation as a Tool of Thought) details the importance of good notation to assist making thought easier.
z^3 expands on Javascript notations, and then enhances the notation to allow easy expression and simplicity.
Apart from a rich operator and notation set, the motivation of the z^3 language is to be as close to normally used mathematical notation (such as Σ, !, .. ,etc.) as commonly used.
Assignment Operators
z^3 allows assigning values to the left as well as to the right using <== and ==> operators. This allows better expressivity for more logical thinking.
a <== 23; 23 ==> a;
a <== 23; is equivalent to a=23; and both notations are equivalent in z^3.
:= : Quick Function Creation Operator
The quick function creation operator in z^3 ( := ) is similar to the => operator in Javascript. However, the advantage of := operator is that the parameters are not named explicitly (and is autodetected). For example to define a function such as v=u+a*t, v:=u+a*t is sufficient, and the parameters u, a and t are auto detected.
Any variable names with lowercase (such as ab, cde, etc) with less than 3 characters in length, is considered to be a local variable. All other names (including any longer variable lowercase names) are checked to see if there is a similar name already in a higher or global scope, and in which case, will not be treated as a local variable.
The => function definition operator in normal Javascript, differs slightly. Hence to define a function such as v=u+a*t, in Javascript (as well as z^3), it would require us to indicate it as v=(u,a,t)=>u+a*t;
The := operator in z^3 hence allows avoiding explicitly repeating the parameter names again in the argument list and function body.
v:=u+a*t and v=(u,a,t)=>u+a*t; both are equivalent to
function v(u,a,t) { return(u+a*t) }
@: Function Apply Operator
1..100@SIN
~: Transpose Operator
[[[1..10]~]~]~
↑ and ↓: Ascending and Descending Operator
MAGICSQUARE(5)! (1..100)↓ (1..100)↑
⧓,⧒,⧒ and ⋈: Between Operators
a=-1; ⧓(1,a,30) a=29; ⧓(1,a,30) //between g a=31; ⧒(1,a,30) //xlbetween g a=30; ⧒(1,a,30) //xlbetween g ⧒(1,2,30) // xlb g ⧒(1,1,30) a=29; ⋈(1,-1..31,30); ⧓(1,-1..5,4); [ ⧓(1,1,30), ⧓(1,0,30), ⧓(1,10,30), ⧓(1,31,30), ⧑(1,29,30), ⧑(1,30,30), ⧑(1,1,30), ⧑(1,30,30), ⋈(1,1,30), ⋈(1,3,30) ]
√: Square Root, Cube Root, Fourth Root and Nth Root Operators
√(3+34) ∛(27.01) √√64 ROOTNTH(1..10,4) // root is first parameter NTHROOT(1..10,4) // root is second parameter NTHROOT(1..100,2) NTHROOT(1..100,4) ROOTNTH(1..100,2) ROOTNTH(1..100,4) 3√81
Logical Statements
If Statements
a=3; (a<0)::{"whatever"}, { !(a>4):: {"whateverelse"}, {"whateverelseleft"} } (a>4):: {"whateverelse"}, {"whateverelseleft"} (b<0)::b=34,b=345; is equivalent to if(b<0) { b=34; } else { b=345; } Both notations are equivalent and will work in z^3.
Switch Statements
Apart from the conventional Javascript switch statement syntax, z^3 enhances language simplicity with a new style.
The new z^3 switch statements syntax is as follows.
discriminant::: { x, y:: /*statements to be executed if x or y is true*/ /*Break is automatically added. */ /*Simply add an empty statement using a simple extra semicolon (;)) */ , z:: /*statements to be executed if z is true*/ , default:: }
For example, b=0; c=343; fruits="mango"; fruits::: { "apple","tomato":: b++; c=3.4; , "mango":: b=34905; , default:: b=45.6; } [b,c]; switch(a) { case b: case c: break; default: break; } Both notations work in z^3
Loops
a=1; do { a++ } until(a>20); // do while(!condition) a; // here this will be 21, since !condition is checked like a do while loop. a=11; b=45; because(a<b) { a++ OUTPUT(a) } a=11; do { a++ } unless(a==11); a;
Function Declarations
function y(x) { ∵(x<345) { ∴(x+3434) } ∵(x>345) { ∴(x-3434) } } y(13); The letter Ƒ can also be used instead of the full term function. Ƒ y(x) { ∵(x<345) { ∴(x+3434) } ∵(x>345) { ∴(x-3434) } } y(13);
Existential Quantification
a=1..100; ∀a("x<810") ∃a("x<810") ∄a("x<810") a=1..100; [∀a("x<810"),∃a("x<810"),∄a("x<810")] a=1..100; [∀a("x<810"),∃a("x<810"),(!∄a("x<0"))] a=1..100; b= ∀a("y*2<200"); b.result a=1..100; b= ∀a("y*2<=50"); a.pick(b.result) //make a pick operator based on a similar array of true false. or non-existant to get the values out. //PICK a=1..100; b= ∀a("y*2<50"); a.pick(b.result)
List of Operators
+, -, *, /, ^, % - Arithmetic Operators | | - Array Function and Creation Operator .. - Arithmetic and Geometric Series Creation ... - Arithmetic and Geometric Series Creation @ - apply to # - Series or Special Case Qualifier for Dates, Calci Cells, and Sequences, etc. ## - Prefix used to indicate long variable names with spaces. (e.g., ##Speed of the Car=34, which gets translated to SpeedoftheCar = 34;) <<< - Member or Variable Assignment () - Function Call [] - Set Creation - Object Set - Set Object Membership . - Member Function Dereferencing. . mf - Member Function .$ mf(function, parameters) - Element-wise Function Application .$$ mf (special – Row-wise Function Application .$$$ mf (special) – Column-wise Function Application .$_ mf (special) - Cumulative Function Application (all) :: - If ::: - switch = - Assignment to the left <== - Assignment to the left ==> - Assignment to the right := - Quick function definition operator. All operators in Javascript, also have the same meaning in z^3, except binary operators such as |, & and ~. Binary | is used to indicate matrix boundaries, and is replaced with |||. Binary & is used to indicate matrix boundaries, and is replaced with &&&. Binary ~ is used to indicate matrix boundaries, and is replaced with ~~~.
Short Cut Keys
CTRL+G - to convert into Greek Code CTRL+U - Converts SIGMA to Σ SHIFT+ENTER- Gives Parameter Expansion Double tap SHIFT - Toggle Capital and Small Letter [Ex: Convert FRACTAL to fractal and vice verse] CTRL+SPACE - Function Listing