Variables

Definition

• var identifier = expr: identifier is now expr
• var identifier = var foo = expr: identifier and foo are now expr
• Reserved variable names: there is no reserved variable name.
• A variable definition return the expr given so it can be used in mathematicals operations: 1 + (var foo = 2) retuns 3

Multiple definitions

• You can do var a, b = 1, 2
• You can do var a, b = b, a to swipe values of a and b.

Edition

You can edit variables by multiple ways:

• var a = value
• var a += value
• var a ++: same as var a += 1
• var a -= value
• var a --: same as var a -= 1
• var a *= value
• var a /= value
• var a ^= value
• var a //= value
• var a %= value
• var a ||= value: same as var a = a or value
• var a &&= value: same as var a = a and value
• var a ^^^= value: same as var a = a xor value
• var a |= value: same as var a = a | value
• var a &= value: same as var a = a & value
• var a ^^= value: same as var a = a ^^ value
• var a === value: same as var a = a == value
• var a <== value: same as var a = a <= value
• var a <<= value: same as var a = a < value
• var a >== value: same as var a = a >= value
• var a >>= value: same as var a = a > value

Multiple edits

You can do the same thing with multiple variables:

• var a, b += 1, 2: same as var a += 1 ; var b += 2
• var a, b ++: same as var a, b += 1, 1
• var a, b //= b, a: same as var c = a ; var a //= b ; var b //= c ; del c

Access

To access to a variable, you can:

• give the identifier: foo (returns the value of foo)
• use the special syntax: foo ? bar ? a ? b (returns the value of foo if it is defined, else the value of bar... You can put as much ? identifier as you want.) Then, you can put an expression at the end, such as 2. In this case, the value returned will be 2 if none of the identifiers are given.

Deletion

If you don't need anymore a variable, you can delete it with the del keyword.

Types

Nougaro is a dynamic-typed language. Examples of types:

• int (integers)
• float (floats)
• str (strings)
• list (lists)
• NoneType (None)
• function
• module
• object
• …

Examples

• var foo = var bar = 12
• while var foo = bar - 1 then var bar -= 1

Example for deletion

Create a variable a, the delete it:

nougaro> var a = 1
1
nougaro> del a

But be careful! It can return errors:

nougaro> var a = 1
1
nougaro> del a
nougaro> del a
Traceback (more recent call last):
 In file <stdin>, line 1, in <program>:

  del a
      ^
 NotDefinedError: a is not defined.