| Integer |
integer numbers |
42 |
| Rational |
rational numbers |
13/17 |
| Complex |
complex numbers |
2+I*1/3 |
| Real |
double values |
0.5 |
| Complex Real |
complex double values |
0.5-I*0.25 |
| Evaluation Precedence |
control precedence with (...)
|
(a+b)*c |
| Lists |
comma separated list of elements which are surrounded by { ... }
|
{a, b, c, d} |
| Vectors |
vectors are like list, but cannot contain sub-lists { ... }
|
{1, 2, 3, 4} |
| Matrices |
a matrix contains the rows as sub-lists |
{{1, 2}, {3, 4}} |
| Associations |
comma separated list of rules which are surrounded by <| ... |> and create a dictionary or map |
<|a->x, b->y, ...|> |
| Predefined Functions |
predefined function names start with an upper case character and the arguments are enclosed by ( ... )
|
Sin(0), PrimeQ(13) |
| Predefined Constants |
predefined constant names start with an upper case character |
Degree, E, Pi, False, True, ... |
| User-defined variables |
identifiers which you would like to assign a value start with a $ character in the server environment |
$a=42 |
| User-defined variables |
in the Symja console app user-defined variables can be defined without a preceding $ character |
a=42 |
| User-defined rules |
identifiers which you would like to assign a rule start with a $ character in the server environment |
$f(x_,y_):={x,y} |
| User-defined rules |
in the Symja console app user-defined rules can be defined without a preceding $ character |
f(x_,y_):={x,y} |
| Pattern Symbols |
patterns end with an appended _ character and could have a constraint |
$f(x_Integer):={x} |
| Strings |
character strings are enclosed by double quote characters |
"Hello World" |
| Slots |
a # character followed by an optional integer number |
# or #2
|
| Pure Functions |
pure functions can be expressed with the & operator |
(#^3)&[x] gives x^3
|
| Parts of an expression |
expr[[index]] |
{a, b, c, d}[[2]] gives b
|
