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Rollup merge of #82809 - notriddle:microoptimize-main-js, r=GuillaumeGomez

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rustdoc: Use substrings instead of split to grab enum variant paths

Both versions are about equally readable, but this version avoids scanning the entire path and building an intermediate array (`split()` in Rust is a lazy iterator, but not in JavaScript).
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Guillaume Gomez 2021-03-05 21:44:44 +01:00 committed by GitHub
commit 8dfbc00d27
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1 changed files with 3 additions and 3 deletions
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src/librustdoc/html/static/main.js
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@ -1548,9 +1548,9 @@ function defocusSearchBar() {
} else if (type === "structfield" && parentType === "variant") {
// Structfields belonging to variants are special: the
// final path element is the enum name.
var splitPath = item.path.split("::");
var enumName = splitPath.pop();
path = splitPath.join("::");
var enumNameIdx = item.path.lastIndexOf("::");
var enumName = item.path.substr(enumNameIdx + 2);
path = item.path.substr(0, enumNameIdx);
displayPath = path + "::" + enumName + "::" + myparent.name + "::";
anchor = "#variant." + myparent.name + ".field." + name;
pageType = "enum";