#3642 NORM Untriag: A few suggestions to Calculate

[Zarro Boogs per Child]

#3642: A few suggestions to Calculate
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 Reporter:  ohshima              |       Owner:  rwh      
     Type:  enhancement          |      Status:  new      
 Priority:  normal               |   Milestone:  Untriaged
Component:  calculator-activity  |     Version:           
 Keywords:                       |    Verified:  0        
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 "xor" in the "Boolean" tab inserts "^", but it is not really the xor
 operator.  "2^3" is 8, etc.  The "**" operator is added and now both do
 calculate the power.  On the other hand, if I type "true^true" and hit
 enter, nothing happens.  Xor may not have to be in the list?

 In Algebra tab, the "fac" button inserts "!", but to be consistent and
 avoid the same problem as #3625, perhaps renaming the label to "fact" or
 "factorial" and insert "fact()" or "factorial()"?

 The "square" button has some obscure feature.  It inserts "^2" but you can
 delete "2" and type arbitrary number, renaming it to "power" and just
 insert "^" might be better?

 With the "Label" feature, you can make bindings but some are ignored; when
 I try to define "true" to be false, or "pi" to be 4.  Oh, but I can define
 "True" to be false.  That is cool.  For calculate, there is no harm to re-
 define the pre-made variables?  It should just have a flat name space?

 (I'd maintain that having these Boolean function in Calculate and that
 many tabs defeats the whole purpose of it; it is supposed to be the most
 accessible non-game activity, rather than having a function calculator
 wannabe.)

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Ticket URL: <https://dev.laptop.org/ticket/3642>
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