Hello World in Angle is
"Hello World"

The deep formal reason why this is a valid program is that the last object in a block is its return value and the last result in the root block of the main file is printed.

«Data is Code and Code is Data»
Everything in Wasp is a node, when it has children it is a list, when the children are of type key it's a map:
1 == [1] ≈ [a:1]

[ 1 2 3 ] == ( 1 2 3 ) == { 1 2 3 } == 〔 1 2 3 〕== 1 2 3 …

All unicode brackets are parsed as lists〚…〛〖…〗『…』「…」 …

[ 1 2 3 ] + ( 4 5 ) = 1 2 3 4 5

data can be typed as classes or wit schema.

flags virtues={fast, safe, cheap}
virtues angle_goal = fast+safe
angle_goal.safe   # 1: a flags value is a record of bools (wit `flags`), {fast:1 safe:1 cheap:0}

{a:1 b:2}.b == 2

tree data as first class citizen
{a:1 b:2 c:{d:3 e:4}}.c.d == 3

lists have a 0 based []index and 1 based #number selector:

x='abcde';x[0] == 'a'
x='abcde';x#4 == 'd'

Functions operating on single elements are automatically applicable to lists

square x:=x*x
square [1 2 3] == [1 4 9]

Bare square 1 2 3 broadcasts too: [1 4 9]. x² may need x*x depending on input method. Behavior can be refined via overloading

sum := fold +; sum [1 2 3]

fold + takes one list argument (result 6). Bare sum 1 2 3 is planned as an auto-collected fold (card fold-bare-arguments); keep the definition and call on one evaluation unit (:=…; …).

⅓ ≈ .33333

use math sin π/2 == 1

Fibonacci in Angle is

fibonacci number = if number<2 : 1 else fibonacci(number - 1) + fibonacci it - 2

for more complete list of examples see syntax
https://github.com/pannous/wasp/tree/master/samples
https://github.com/pannous/wasp/blob/master/source/tests.cpp
https://github.com/pannous/wasp/blob/master/source/test_wasm.cpp
https://github.com/pannous/wasp/blob/master/source/test_angle.cpp
https://github.com/pannous/english-script-samples/tree/master
https://github.com/pannous/angle/tree/master/tests (old python tests)

The repository's samples/ folder holds runnable programs; warp samples/<name>.warp runs one. A few that show what a page of warp does:

• crontab.warp: reads the cron table (exec sh "crontab -l") and shows it as a page, schedules in words ("every 10 minutes", "daily at 06:35", "at startup") and the log file in a column of its own. warp app samples/system/crontab.warp opens it in a window.
• visualizer.warp, gpu_visualizer.warp: a tune plays while its spectrum is drawn, as bars or by a GPU shader (sound).
• matching.warp: the forms of pattern matching in one program.
• form_submit.warp, component_totals.warp: html pages with forms and components.
• y_combinator.warp: factorial and Fibonacci through the Z combinator.