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Javascript 2021-09-16 03:00:02
rxjs sequence of api calls
firstPOSTCallToAPI('url', data).pipe( concatMap(result1 => secondPOSTCallToAPI('url', result1)) concatMap( result2 => thirdPOSTCallToAPI('url', result2)) concatMap(result3 => fourthPOSTCallToAPI('url', result3)) .... ).subscr... Add solution -
Python 2021-09-15 22:08:03
python openstreetmap multiple latitude
# ... coordinates = [] for result in results: coordinates.append((result[5], result[6])) lat_center = sum([coordinate[0] for coordinate in coordinates]) / len( coordinates ) lng_center = sum([coordinate[1] for coordinate in coordinates]) / len( ... Add solution -
TypeScript 2021-09-15 21:55:03
Property 'orderBy' does not exist on type 'AngularFirestoreCollection<DocumentData>
this.announcementCollectionRef = afs.collection<Announcement>('announcements', ref => ref.orderBy('createdAt', 'desc')); this.announcements = this.announcementCollectionRef.snapshotChanges().map(actions => { return actions.map(a => { ... Add solution -
Javascript 2021-09-15 20:20:02
react spring transition animations
const [items, set] = useState([...]) const transitions = useTransition(items, item => item.key, { from: { transform: 'translate3d(0,-40px,0)' }, enter: { transform: 'translate3d(0,0px,0)' }, leave: { transform: 'translate3d(0,-40px,0)' }, }) return tra... Add solution -
Python 2021-09-15 17:27:01
pandas mutate new column
#Using .assign you can make multiple #operations that depend on the #previous ones without the need #of creating intermediate variables import pandas as pd df = pd.DataFrame({ 'name': ['alice','bob','charlie','daniel'], 'age': [25,66,56,78] }) d... Add solution -
Javascript 2021-09-15 12:05:02
react map wait axios call
const postIds = ['123', 'dn28e29', 'dn22je3']; const posts = posts.map(post => { return axios .get(`https://example.com/post/${post.id}`) .then(res => res.data) .catch(e => console.error(e)); } Promise.all(posts).then(res => co... Add solution -
Javascript 2021-09-15 01:07:02
immutable js sort ascending and descending order
var sorted = data.get('item').sortBy((item) => -item.get('sequence')); // or var sorted = data.get('item').sortBy((item) => item.get('sequence')).reverse(); // you can now use .map() to go through your OrderedMap which has been // sortbed by the seq... Add solution
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