[Pharo-project] how can I get bit representation of numbers

[Stéphane Ducasse]

Hi guys

I thought that 

printStringBase: 2 would do the trick
but it only works for positive number.

I would like to see the two complement representation of numbers.
So I implemented something like that but I wonder if this is correct.

| v |
v := 10. 
String streamContents: [:s | 
        31 to: 1 by: -1 do: [:i | s nextPut: ((v bitAt: i) + 48) asCharacter   
] .
        s contents] 

Integer readFrom:  '0000000000000000000000000001010' base: 2

| v |
v := -3.  "1111111111101"
String streamContents: [:s | 
        31 to: 1 by: -1 do: [:i | s nextPut: ((v bitAt: i) + 48) asCharacter   
] .
        s contents
        ]  '1111111111111111111111111111101'

Now Integer readFrom:  '11111111111111111111111111111101' base: 2
does not hold back -3


Stef