add example: DnD 5e ability scores and modifiers

This example shows how to calculate values from frontmatter properties
and store them in memory, than reusing and formatting  them where needed.

Author: Cube707

exampleVault/Advanced Examples/DnD 5e Ability Scores and Modifiers.md

@@ -0,0 +1,41 @@
+---
+STR: 8
+DEX: 16
+CON: 11
+INT: 12
+WIS: 14
+CHR: 11
+---
+
+This example calculates a DnD character's ability modifiers from the ability scores and displays it all in a list.
+
+The modifiers are stored in `memory` and not in the frontmatter. This reduces clutter but requires some hidden fields that calculate the values while the fields in the list just format the value to always contain a `+/-` sign.
+
+
+## Character ability scores
+
+```meta-bind
+VIEW[ floor(({STR} - 10) / 2) ][math(hidden):memory^STR_mod]
+```
+```meta-bind
+VIEW[ floor(({DEX} - 10) / 2) ][math(hidden):memory^DEX_mod]
+```
+```meta-bind
+VIEW[ floor(({CON} - 10) / 2) ][math(hidden):memory^CON_mod]
+```
+```meta-bind
+VIEW[ floor(({INT} - 10) / 2) ][math(hidden):memory^INT_mod]
+```
+```meta-bind
+VIEW[ floor(({WIS} - 10) / 2) ][math(hidden):memory^WIS_mod]
+```
+```meta-bind
+VIEW[ floor(({CHR} - 10) / 2) ][math(hidden):memory^CHR_mod]
+```
+
+- STR: `VIEW[**{STR}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^STR_mod}) ? '+' : '', string({memory^STR_mod})) ][math]`)
+- DEX: `VIEW[**{DEX}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^DEX_mod}) ? '+' : '', string({memory^DEX_mod})) ][math]`)
+- CON: `VIEW[**{CON}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^CON_mod}) ? '+' : '', string({memory^CON_mod})) ][math]`)
+- INT: `VIEW[**{INT}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^INT_mod}) ? '+' : '', string({memory^INT_mod})) ][math]`)
+- WIS: `VIEW[**{WIS}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^WIS_mod}) ? '+' : '', string({memory^WIS_mod})) ][math]`)
+- CHR: `VIEW[**{CHR}**][text(renderMarkdown)]` (`VIEW[ concat(isPositive({memory^CHR_mod}) ? '+' : '', string({memory^CHR_mod})) ][math]`)