Stonebraker's Arrow-Drawing Functions

Uttryck 18: "a" Subscript, "r" "r" "o" "w" "D" "e" "f" "a" "u" "l" "t" , Baseline left parenthesis, "b" Subscript, "a" "s" "e" "p" "t" , Baseline , "m" Subscript, "a" "g" "n" , Baseline , "a" Subscript, "n" "g" "l" "e" , Baseline , right parenthesis equals "a" Subscript, "r" "r" "o" "w" "P" "o" "l" "a" "r" "A" "l" "l" , Baseline left parenthesis, "b" Subscript, "a" "s" "e" "p" "t" , Baseline , "m" Subscript, "a" "g" "n" , Baseline , "a" Subscript, "n" "g" "l" "e" , Baseline , "h" Subscript, "e" "a" "d" "w" "i" "d" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline , "h" Subscript, "e" "a" "d" "l" "e" "n" "g" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline , "h" Subscript, "e" "a" "d" "s" "t" "y" "l" "e" "D" "e" "f" "a" "u" "l" "t" , Baseline , right parenthesis

Uttryck 19: "a" Subscript, "r" "r" "o" "w" "D" "e" "f" "a" "u" "l" "t" "O" "r" "i" "g" "i" "n" , Baseline left parenthesis, "m" Subscript, "a" "g" "n" , Baseline , "a" Subscript, "n" "g" "l" "e" , Baseline , right parenthesis equals "a" Subscript, "r" "r" "o" "w" "P" "o" "l" "a" "r" "A" "l" "l" , Baseline left parenthesis, left parenthesis, 0 , 0 , right parenthesis , "m" Subscript, "a" "g" "n" , Baseline , "a" Subscript, "n" "g" "l" "e" , Baseline , "h" Subscript, "e" "a" "d" "w" "i" "d" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline , "h" Subscript, "e" "a" "d" "l" "e" "n" "g" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline , "h" Subscript, "e" "a" "d" "s" "t" "y" "l" "e" "D" "e" "f" "a" "u" "l" "t" , Baseline , right parenthesis

Uttryck 20: "h" Subscript, "e" "a" "d" "w" "i" "d" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline equals 0.0 5

Uttryck 21: "h" Subscript, "e" "a" "d" "l" "e" "n" "g" "t" "h" "D" "e" "f" "a" "u" "l" "t" , Baseline equals 0.1

Uttryck 22: "h" Subscript, "e" "a" "d" "s" "t" "y" "l" "e" "D" "e" "f" "a" "u" "l" "t" , Baseline equals 0.5

-----Below this line are example usages, totally safe to delete-----

Uttryck 24: theta Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline equals negative 30

negative 180

180

Uttryck 25: "m" Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline equals 3.3 4

negative 10

Example 1: Simple call and display of an arrow function (can't be filled):

Gömd Etikett: "a" Subscript, "r" "r" "o" "w" "P" "o" "l" "a" "r" "A" "l" "l" , Baseline left parenthesis, left parenthesis, 1 , 6 , right parenthesis , "m" Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , theta Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , .1 , .2 , .5 , right parenthesis

Etikett

equals

left parenthesis, 1 , 6 , right parenthesis

left parenthesis, 3.6 0 3 , 4.4 9 7 , right parenthesis

left parenthesis, 3.4 8 1 , 4.9 5 3 , right parenthesis

left parenthesis, 3.8 9 3 , 4.3 3 , right parenthesis

left parenthesis, 3.1 4 7 , 4.3 7 5 , right parenthesis

left parenthesis, 3.6 0 3 , 4.4 9 7 , right parenthesis

Example 2: Draw a polygon (which can be filled) from an arrow function's list of points:

Uttryck 29: polygon left parenthesis, "a" Subscript, "r" "r" "o" "w" "D" "e" "f" "a" "u" "l" "t" "T" "r" "i" "a" "n" "g" "l" "e" , Baseline left parenthesis, left parenthesis, 1 , 4 , right parenthesis , "m" Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , theta Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , right parenthesis , right parenthesis

Example 3: Name the list of points from an arrow function and hide that expression, then create a polygon of that named list:

Gömd Etikett: "v" Subscript, "n" "a" "m" "i" "n" "g" "e" "x" "a" "m" "p" "l" "e" , Baseline equals "a" Subscript, "r" "r" "o" "w" "D" "e" "f" "a" "u" "l" "t" "S" "t" "i" "c" "k" , Baseline left parenthesis, left parenthesis, 1 , 2 , right parenthesis , "m" Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , theta Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , right parenthesis

Etikett

equals

left parenthesis, 1 , 2 , right parenthesis

left parenthesis, 3.8 9 3 , 0.3 3 , right parenthesis

left parenthesis, 3.6 8 7 , 0.6 4 1 6 , right parenthesis

left parenthesis, 3.8 9 3 , 0.3 3 , right parenthesis

left parenthesis, 3.5 2 , 0.3 5 2 4 , right parenthesis

left parenthesis, 3.8 9 3 , 0.3 3 , right parenthesis

Uttryck 32: polygon left parenthesis, "v" Subscript, "n" "a" "m" "i" "n" "g" "e" "x" "a" "m" "p" "l" "e" , Baseline , right parenthesis

Example 4: Note that if you give a label to a list of points, it appears on every point, so you'll probably want to label just one item from the list with a separate expression:

confusing label: "v" Subscript, "l" "a" "b" "e" "l" "e" "x" "a" "m" "p" "l" "e" , Baseline equals "a" Subscript, "r" "r" "o" "w" "D" "e" "f" "a" "u" "l" "t" "O" "r" "i" "g" "i" "n" , Baseline left parenthesis, "m" Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , theta Subscript, "e" "x" "a" "m" "p" "l" "e" , Baseline , right parenthesis

Etikett:

equals

left parenthesis, 0 , 0 , right parenthesis

left parenthesis, 2.7 4 8 , negative 1.5 8 6 , right parenthesis

left parenthesis, 2.6 8 7 , negative 1.3 5 8 , right parenthesis

left parenthesis, 2.8 9 3 , negative 1.6 7 , right parenthesis

left parenthesis, 2.5 2 , negative 1.6 4 8 , right parenthesis

left parenthesis, 2.7 4 8 , negative 1.5 8 6 , right parenthesis

fourth item only: "v" Subscript, "l" "a" "b" "e" "l" "e" "x" "a" "m" "p" "l" "e" , Baseline left bracket, 4 , right bracket

Etikett:

equals

left parenthesis, 2.8 9 2 5 2 4 8 5 , negative 1.6 7 , right parenthesis

driven av

confusing label

fourth item only