I am receiving this error and I'm not sure what it means? Object reference not set to an instance of an object.

77 By wrapping your comparisons in {} in your first example you are creating ScriptBlocks; so the PowerShell interpreter views it as Where-Object { <ScriptBlock> -and <ScriptBlock> }. Since …

Apr 8, 2009 · 3822 I have an object x. I'd like to copy it as object y, such that changes to y do not modify x. I realized that copying objects derived from built-in JavaScript objects will result in …

Jan 17, 2013 · The Object.entries () method returns an array of a given object's own enumerable property [key, value] So you can iterate over the Object and have key and value for each of …

641 This question already has answers here: How to get a complete list of object's methods and attributes? [duplicate] (5 answers)

4 You can check whether object contains an attribute by using the hasattr built-in method. For an instance, if your object is a and you want to check for attribute stuff:

Jun 21, 2011 · If this is the proper way of checking if the object is null, what am I doing wrong (how can I prevent further processing on the object to avoid the NullReferenceException)?

Object.keys(null) Object.assign(window.UndefinedVariable, {}) As that is usually by mistake, the solution is to check your code and fix the null/undefined condition so that the function either …

Oct 16, 2008 · Implementing Object.keys () will give you a more robust solution. EDIT: following a recent discussion with kangax, a well-known contributor to Prototype, I implemented the …

Apr 10, 2011 · Firefox will display objects as a string, but colored nicely. Chrome will display the object as an interactive group that you can expand to see the properties. Give it a try!