If you want to check if the data returned by our service is an Array or a simple object we can use the Array.isArray(**) function Example : here we added [data] when the service returns an object to make sure that we are affecting an array to our dataSource
Problem : I need to convert an object to a map to get the values of key dynamically Solution : The Map constructor takes an array of key-value pairs. Object.entries is a new Object static method available in ES2017 (19.1.2.5) If you need to support older environments and transpilation is not an option for you, […]
we always use object != null a lot to avoid NullPointerException on java. Is there a good alternative to this ? For example we often use : This checks for a NullPointerException for the obj object in the above snippet. Solution : This to me sounds like a reasonably common problem that junior to intermediate […]
Source code in JavaTuto.com is licensed under the MIT License .