Hi Mat Thanks for the great feedback!!! I guess I overlooked calc on Tobias’ pages either because I ran into math.js first and was repelled by it’s complexity … or I did not evaluate it further because it is specialised on working with field values which I do not need. (But I found out that rpn covers this also in a way I would prefer.) I have added it to my alternatives of course.
First of all: I like your hint to the term decimals! For me it suggests, that a fixed number of digits after the comma would be returned. rpn can’t do that (it would be nice to show the exactness of a result). But maybe it is just me? Here are some differences and similarities I found: * calc has more functionality (until, beyond, by) – as all solutions by Tobias it is very sophisticated, mine is primitive ;–) * calc unites operator and operand – rpn separates them (this makes my macro usage easier) * calc does not round all numbers the same way – some are rounded up, others are floored (see example below) * calc and rpn both do not return trailing zeros (as one could hope specifying parameters like decimals or dacs) * both can handle values from fields: calc accepts field (and tiddler) names, in rpn you can use transclusions You can copy this in a new tiddler in the calc wiki <http://tobibeer.github.io/tb5/#calc> to try yourself: <<calc 1 /3 decimals:4>> <<calc 0 +1.5500 decimals:4>> <<calc 0 +1.5 decimals:0>> – the 5 in 1.5 is rounded (up) <<calc 1 +1.555>> – the last 5 is floored --- calc has 2444 characters, rpn.js has 1305 <<calc 2444 /1305 >> that is a plus of 87 percent I am not sure about your last question. For the first I use wikify a lot myself – are there any disadvantages I am not aware of? Second: I guess you are not after this: <$macrocall $name="rpn" a=<<rpn 2 2 *>> b=<<rpn 2 2 *>> operation="*"/> rpn expects text as input and interpretes it as a number, wikify is a safe way to get text as output from other macros … Thanks again and have a nice weekend! -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/77699567-8637-44fa-8e8e-792578f47758%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
