所以我遇到了在线,我想知道void
在打字稿中有什么意义?
就像这里:
private _handleProjectQuerySuccess(data: IProject[]): void
{
data.sort(this._projectSort);
var pathname = this._$location.path();
var activeSet = false;
data.forEach((project: IProject) =>
{
project.active = pathname == '/' + project.id;
activeSet = activeSet || project.active;
project.name = this._$sanitize(project.name);
project.description = this._$sanitize(project.description);
project.url = this._$sce.trustAsUrl(project.url);
project.readme = this._$sce.trustAsHtml(project.readme);
project.title = project.name + (project.fork ? ' (fork)' : ' (repo)');
this._scope.projects.push(project);
this._projectMap[project.id] = this._scope.projects[this._scope.projects.length - 1];
});
if (!activeSet)
{
data[0].active = true;
}
}
在我们宣布私有后,我们暗示 void
......这是什么意思?
答案 0 :(得分:16)
这只是一种类型,如下所示:
或许在某些方面与“任何”相反。如果没有任何类型,那就是“无效”。您通常会将此视为不返回值的函数的返回类型:
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_KTKRegion", referenced from:
objc-class-ref in AppDelegate.o
"_OBJC_CLASS_$_KTKLocationManager", referenced from:
objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
答案 1 :(得分:0)
请注意, void 和 any 类型有些重叠,起初可能很奇怪。虽然 void 可能不返回任何数据(仅null和undefined)-任何都可能返回任何类型的数据(包括null和undefined)。