3 ms·

I mean I get the idea but No floating point datatypes No ... switch statements or do...while loops seem like terrible things to leave out, occasional gotc

I mean I get the idea but No floating point datatypes No ... switch statements or do...while loops seem like terrible things to leave out, occasional gotchas of floating point not with standing being only integers means no division

lou1306 9y ago
No floating point types is a little harsh, but IMHO one should only use them when they really understand their implications. Otherwise they might be tempted to do Bad Stuff like using float for currencies, etc.
instruction-ptr 9y ago
“No division”? How do you reason this? Integer division is a thing
- Avshalom 9y ago
  division is not defined on the set of integers, you only have modular arithmetic.
  - instruction-ptr 9y ago
    See section 7 of http://www.cs.cmu.edu/~15122/handouts/02-ints.pdf http://www.cs.cmu.edu/~15122/handouts/02-ints.pdf (As an aside nearly every language defines division on the set of integers this way so it’s not even like we’re making this up)
  - jameshart 9y ago
    division is also not defined on the set of IEEE binary floating point numbers, you only have (well-defined) rounding. For that matter, addition and subtraction aren't defined on the range of fixed-bit-width integers.
  - recursive 9y ago
    It is defined and you can do it in C without using floats. On the other hand, even if you do use floats, arbitrary arithmetic is not invertible. In other words a / b * b isn't necessarily a, regardless of what types they are.
  - baby 9y ago
    What do you mean division is not defined on the set of integers? Mathematically or programmatically? Because yes you have euclidean divisions which are divisions for the integers.
rootbear 9y ago
The first structured programming language I learned was a home grown language called Simpl-T, at the University of Maryland. It did not have floating point, but one could still do an awful lot with it. Other members of the Simpl-X family did have floating point, as I recall.

lou1306 9y ago

No floating point types is a little harsh, but IMHO one should only use them when they really understand their implications. Otherwise they might be tempted to do Bad Stuff like using float for currencies, etc.

instruction-ptr 9y ago

“No division”? How do you reason this? Integer division is a thing

Avshalom 9y ago
division is not defined on the set of integers, you only have modular arithmetic.
- instruction-ptr 9y ago
  See section 7 of http://www.cs.cmu.edu/~15122/handouts/02-ints.pdf http://www.cs.cmu.edu/~15122/handouts/02-ints.pdf (As an aside nearly every language defines division on the set of integers this way so it’s not even like we’re making this up)
- jameshart 9y ago
  division is also not defined on the set of IEEE binary floating point numbers, you only have (well-defined) rounding. For that matter, addition and subtraction aren't defined on the range of fixed-bit-width integers.
- recursive 9y ago
  It is defined and you can do it in C without using floats. On the other hand, even if you do use floats, arbitrary arithmetic is not invertible. In other words a / b * b isn't necessarily a, regardless of what types they are.
- baby 9y ago
  What do you mean division is not defined on the set of integers? Mathematically or programmatically? Because yes you have euclidean divisions which are divisions for the integers.

rootbear 9y ago

The first structured programming language I learned was a home grown language called Simpl-T, at the University of Maryland. It did not have floating point, but one could still do an awful lot with it. Other members of the Simpl-X family did have floating point, as I recall.