[Oberon] Easter eggs in Oberon
fusionfile at gmail.com
Wed Apr 15 18:59:25 CEST 2020
On 2020-04-13 22:37, Joerg wrote:
> Why is there an INC if you have +
Good question. Though it's nice not having to read the same identifier
aRatherLongVariableName := aRatherLongVariableName + 37
> Why is there an ASR if there is a DIV
> Why is there an LSL if there is a *
Because shift is faster than division and multiplication, and doesn't
require compiler optimizations. This is in accordance with Wirth's idea
of separating the task of compilation so that things which are easy for
the programmer to do is done by the programmer and things which are easy
for the compiler to do is done by the compiler.
> Why do you have to change THREE things when going from INTEGER to REAL
> i := i DIV 5;
> r := FLT(i) / 5.0
* the language simpler
* the compiler simpler
* it easier to reason about the result without having to remember
implicit conversion rules.
The obvious drawback of having to use FLT and FLOOR is that it makes
expressions harder to read.
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