"【Map】":"【WeakMap】";letarr=newArray(objNum);functionusageSize(){constused=process.memoryUsage().heapUsed;returnMath.round((used/1024/1024)*100)/100+"M";}if(useType==1){global.gc();console.log(objNum+'个'+cur
let n; let o = {}, m = new Map(); n = 10000; while (n--) { o[Math.random()] = Math.random(); } n = 10000; while (n--) { m.set(Math.random(), Math.random()); } let p1 = performance.now(); for (key in o) { delete o[key]; } let p2 = performance.now();...
fruits.set("bananas",300); fruits.set("oranges",200); Try it Yourself » Theset()method can also be used to change existing map values: Example fruits.set("apples",500); Try it Yourself » Map.size Thesizeproperty returns the number of elements in a map: ...
All changes made to your style will appear on the map canvas in the center of the style editor. You can click on the map to see all layers at a single point and when the Select data panel is open, you can inspect individual features from the selected tileset to view their properties....
Mapbox Studio topicscovered in this section: Upload Dataset Tileset Template style Custom style Add data to style Style data Publish Draft vs. production style URLs For each style you create in Mapbox Studio, there is both adraftandproductionstyle URL available: ...
Display static maps anywhere you can place an image, including in applications or UIs where interactive maps can't be displayed. Sign up for freeDocumentation Product update New support for Mapbox Standard Mapbox Standard is now supported in the Static Image API. Users can generate high-quality...
setCopyOnWrite(true); uint32_t compact_size = r1.getSizeInBytes(); std::cout << "size before run optimize " << size << " bytes, and after " << compact_size << " bytes." << std::endl; // create a new bitmap with varargs Roaring r2 = Roaring::bitmapOf(5, 1, 2, 3, ...
1.1 Set 和 WeakSet 主要区别 WeakSet 结构与 Set 类似,也是不重复的值的集合。区别: WeakSet 的成员只能是对象,而不能是其他类型的值; const ws = new WeakSet(); ws.add(1) // TypeError: Invalid value used in weak set ws.add(Symbol()) // TypeError: invalid value used in weak set WeakSet...
Mapbox Studio topics covered in this section: Upload Dataset Tileset Template style Custom style Add data to style Style data Publish Layers A layer is a styled representation of data of a single type (for example fill, line, or symbol). Layers can be a part of a component, but don...
Finally, you can submit the pull request! Head back to the source repo, and you should see a new button, saying "Create Pull Request". If the author has set a PR template, be sure it's filled in properly. Contribution Flow ⬆️ Back to Top ...