本文整理匯總了TypeScript中@angular/core.KeyValueDiffer.diff方法的典型用法代碼示例。如果您正苦於以下問題:TypeScript KeyValueDiffer.diff方法的具體用法?TypeScript KeyValueDiffer.diff怎麽用?TypeScript KeyValueDiffer.diff使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類@angular/core.KeyValueDiffer
的用法示例。
在下文中一共展示了KeyValueDiffer.diff方法的2個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1:
transform<K, V>(
input: null|{[key: string]: V, [key: number]: V}|Map<K, V>,
compareFn: (a: KeyValue<K, V>, b: KeyValue<K, V>) => number = defaultComparator):
Array<KeyValue<K, V>>|null {
if (!input || (!(input instanceof Map) && typeof input !== 'object')) {
return null;
}
if (!this.differ) {
// make a differ for whatever type we've been passed in
this.differ = this.differs.find(input).create();
}
const differChanges: KeyValueChanges<K, V>|null = this.differ.diff(input as any);
if (differChanges) {
this.keyValues = [];
differChanges.forEachItem((r: KeyValueChangeRecord<K, V>) => {
this.keyValues.push(makeKeyValuePair(r.key, r.currentValue !));
});
this.keyValues.sort(compareFn);
}
return this.keyValues;
}
示例2: ngDoCheck
ngDoCheck() {
if (this.differ.diff(this.discount) != null) {
this.updateValue();
}
}