Variables

Definition

• var identifier = expr : identifier is now expr
• var identifier = var foo = expr : identifier and foo are now expr
• Reserved variable names :
  • null (0)
  • True (1)
  • False (0)
  • None (a NoneType instance)
  • noug_version (depending the version, str type).
• A variable definition return the expr given so it can be used in mathematicals operations : 1 + (var foo = 2) retuns 3

Edition

You can edit variables by multiple ways:

• var a = value
• var a += value
• var a -= value
• 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

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.)

Deletion

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

Types

There is 4 types :

• int (integers)
• float (floats)
• str (strings)
• NoneType (None)

Examples

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