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Code Issues Releases Wiki Activity

Relax the restriction on the let widget being unable to create variables starting with a dollar

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This commit is contained in:
jeremy@jermolene.com 2022-10-01 09:47:26 +01:00
parent 81e4745c56
commit 1df4c29d73
2 changed files with 7 additions and 6 deletions
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8
core/modules/widgets/let.js
View File

@ -51,11 +51,9 @@ LetWidget.prototype.computeAttributes = function() {
$tw.utils.each($tw.utils.getOrderedAttributesFromParseTreeNode(this.parseTreeNode),function(attribute) {
var value = self.computeAttribute(attribute),
name = attribute.name;
if(name.charAt(0) !== "$") {
// Now that it's prepped, we're allowed to look this variable up
// when defining later variables
self.currentValueFor[name] = value;
}
// Now that it's prepped, we're allowed to look this variable up
// when defining later variables
self.currentValueFor[name] = value;
});
// Run through again, setting variables and looking for differences
$tw.utils.each(this.currentValueFor,function(value,name) {

5
editions/tw5.com/tiddlers/widgets/LetWidget.tid
View File

@ -1,5 +1,6 @@
title: LetWidget
created: 20211028115900000
modified: 20221001094658854
tags: Widgets
caption: let
@ -12,10 +13,12 @@ caption: let
The content of the <<.wid let>> widget is the scope for the value assigned to the variable.
|!Attribute |!Description |
|//{attributes not starting with $}// |Each attribute name specifies a variable name. The attribute value is assigned to the variable |
|//{attributes}// |Each attribute name specifies a variable name. The attribute value is assigned to the variable |
Attributes are evaluated in the order they are written. Attributes with the same name are allowed. Each time a duplicate attribute is encountered, it will replace the existing value set by the earlier duplicate.
<<.note """<<.from-version "5.2.4">> There is no longer any restriction on using variable names that start with the $ character.""">>
! Examples
Consider a case where you need to set multiple variables, where some depend on the evaluation of others.