WebPlease note that the right side expression will only be called if the left side expression is null. Note that, since throw and return are expressions in Kotlin, they can also be used on the right-hand side of the Elvis operator. This can be very handy, for example, for checking function arguments Web13 okt. 2014 · If the list is not null and not empty, I want to do something, otherwise I want to do something else. I came up with following solution: when { activities != null && …

Check if Java String is Empty, Null or Whitespace

WebTo check if string is empty in Bash, we can make an equality check with the given string and empty string using string equal-to = operator, or use -z string operator to check if the size of given string operand is zero. In this tutorial, we will go through examples using the above mentioned techniques to check if the given string is empty. how to rtecruit haar path of radiance

How to check empty/undefined/null string in JavaScript?

Web25 jul. 2024 · You can use isNullOrBlank() to check is a string is null or empty. This method considers spaces only strings to be empty. Here is a usage example: val s: … Web24 jul. 2024 · The compiler handles String? nicely to prevent null, and we can use aNullableString.isNullOrBlank() to check if it is null or blank. However, this requires that … Web8 jan. 2024 · Returns true if this nullable array is either null or empty. xxxxxxxxxx val nullArray: Array? = null println("nullArray.isNullOrEmpty () is $ … how to rsvp to kids birthday party