mirrors/TiddlyWiki5
1
0
Fork 0
mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2026-02-23 10:29:51 +00:00
Code Issues Releases Wiki Activity

Add let filter run examples (#9681)

Browse Source 
* Add :let filter run prefix examples

Includes one example from @yaisog at #8972

* Added link to the new :let filter run examples

* Fixed broken link
This commit is contained in:
btheado
2026-02-22 15:10:10 -05:00
committed by GitHub
parent c23a0bedfd
commit add3d425b5
2 changed files with 17 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
editions/tw5.com/tiddlers/filters/syntax/Let Filter Run Prefix (Examples).tid Normal file
View File

@@ -0,0 +1,13 @@
created: 20260222152853141
modified: 20260222184916224
tags: [[Let Filter Run Prefix]]
title: Let Filter Run Prefix (Examples)
type: text/vnd.tiddlywiki
<<.operator-example 1 "3 2 1 4 :let[[myvar]] 6 7 8 [(myvar)sort[]]" "Uses the named prefix">>
<<.operator-example 2 "3 2 1 4 =>myvar 6 7 8 [(myvar)sort[]]" "Uses the short-hand prefix">>
<<.operator-example 3 "3 2 1 4 =>myvar 6 7 8 [<myvar>]" "Angle brackets return only the first value">>
<<.operator-example 4 "3 2 1 4 =>mynumbers [(mynumbers)sum[]] [(mynumbers)average[]]">>
<<.operator-example 5 '"[0-9]" =>digitsRE abc 123 de45 67fg hij :filter[regexp<digitsRE>]' "A regular expression containing square brace requires using a variable parameter">>
<<.operator-example 6 '"[prefix[ca]then[ca]]" "[suffix[at]then[at]]" other =>myfilters cat can bat bug :cascade[(myfilters)]' "Define filters to be used with the [[Cascade Filter Run Prefix]]">>
<<.operator-example 7 "[[⁎ ]] [[⁑ ]] [[⁂ ]] :let[[prefixList]] [tag[Learning]first[3]] :map:flat[(prefixList)addsuffix<currentTiddler>]">>

6
editions/tw5.com/tiddlers/filters/syntax/Let Filter Run Prefix.tid
View File

@@ -15,7 +15,7 @@ type: text/vnd.tiddlywiki
[[run|"Filter Run"]]
"""/>
The `:let` filter run prefix assigns the title list resulting from previous filter runs to a [[multi-valued variable|Multi-Valued Variable]]. The variable is named with the first result returned by the filter run.
The `:let` filter run prefix assigns the title list resulting from previous filter runs to a [[multi-valued variable|Multi-Valued Variables]]. The variable is named with the first result returned by the filter run.
The variable is made available to the remaining [[filter runs|Filter Run]] in the [[filter expression|Filter Expression]]. Only the first item in the result list is returned when the variable is accessed in the usual way (or an empty string if the result list is empty). Using round brackets instead of angle brackets around a variable name as an operand retrieves the complete list of items in the result list.
@@ -25,4 +25,6 @@ This prefix has an optional [[shortcut syntax|Shortcut Filter Run Prefix]] symbo
=[<myfun1>] =[<myfun2>] =>myvar
```
The `:let` filter run prefix always clears the current result list.
The `:let` filter run prefix always clears the current result list.
[[Let Filter Run Prefix (Examples)]]