Bob,
1. Is there a simple concatenation operator, like & or + that can be used
> to concatenate strings? I know that a macro can do it but that seems very
> confusing to a simple mind like me.
1. Concatenation
There are many ways to concatenate with tiddlywiki, although for good
reasons in may seem not as strait forward as you would expect. In part
because where do you want this concatenated result used?
Please provide a descriptive example of what you are currently try to
achieve.
With concatenation you will find these methods useful
- Define a macro in which the concatenation occurs
- You can use $(currentTiddler)$ and parameter $param$ for simple
substitutions
- Wiki fy that macro (with the same name is ok) just before you use it
say in a filter and some parameters
- You can use add-prefix/split/join/splitregext and other string
handling.
2. Is there a way of doing simple arithmetic, say increment a variable or
> add some variables together? The manual implies that it is possible in a
> filter but I want to do it outside of a filter.
2. Most if not all the mathematics functions in standard tiddlywiki are
"filter operators", so they must be used in filters
However;
- Use triple braces to present the result of a calculation in line as a
parameter.
{{{ [your maths filter] }}} but you may need to turn the result into
text <$text text={{{ [your maths filter] }}}/>
- You can use other maths plugins like Evans formula plugin he uses
Mushroom brackets (= maths =), calc widget and others
In closing if you are reluctant to learn filters in more detail, I suggest
you jump in. Filters are so powerful once you come to understand them your
powers are almost unlimited.
Regards
TW Tones
On Thursday, 10 September 2020 11:13:06 UTC+10, Bob Jansen wrote:
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> bobj
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