我正在尝试迭代一个typescript映射,但我总是收到错误,而且我还找不到任何解决这个微不足道的问题的方法。
我的代码是:
myMap : Map<string, boolean>;
for(let key of myMap.keys()) {
console.log(key);
}
然后我得到了错误:
类型“IterableIteratorShim”不是数组类型或字符串类型。
完整堆栈跟踪:
Error: Typescript found the following errors:
/home/project/tmp/broccoli_type_script_compiler-input_base_path-q4GtzHgb.tmp/0/src/app/project/project-data.service.ts (21, 20): Type 'IterableIteratorShim<[string, boolean]>' is not an array type or a string type.
at BroccoliTypeScriptCompiler._doIncrementalBuild (/home/project/node_modules/angular-cli/lib/broccoli/broccoli-typescript.js:115:19)
at BroccoliTypeScriptCompiler.build (/home/project/node_modules/angular-cli/lib/broccoli/broccoli-typescript.js:43:10)
at /home/project/node_modules/broccoli-caching-writer/index.js:152:21
at lib$rsvp$$internal$$tryCatch (/home/project/node_modules/rsvp/dist/rsvp.js:1036:16)
at lib$rsvp$$internal$$invokeCallback (/home/project/node_modules/rsvp/dist/rsvp.js:1048:17)
at lib$rsvp$$internal$$publish (/home/project/node_modules/rsvp/dist/rsvp.js:1019:11)
at lib$rsvp$asap$$flush (/home/project/node_modules/rsvp/dist/rsvp.js:1198:9)
at _combinedTickCallback (internal/process/next_tick.js:67:7)
at process._tickCallback (internal/process/next_tick.js:98:9)
我使用angular-cli beta5和typescript 1.8.10,我的目标是es5。有人遇到过这个问题吗?
发布于 2016-06-08 18:58:00
您可以改用Map.prototype.forEach((value, key, map) => void, thisArg?) : void
像这样使用它:
myMap.forEach((value: boolean, key: string) => {
console.log(key, value);
});
发布于 2017-05-23 20:23:59
es6
for (let [key, value] of map) {
console.log(key, value);
}
es5
for (let entry of Array.from(map.entries())) {
let key = entry[0];
let value = entry[1];
}
发布于 2017-05-21 07:41:28
只需使用Array.from()
方法将其转换为Array
myMap : Map<string, boolean>;
for(let key of Array.from( myMap.keys()) ) {
console.log(key);
}
https://stackoverflow.com/questions/37699320
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