As you can see, we're creating a new error object (an ArgumentError) with a custom message ("You messed up!") and passing it to the raise method.This being Ruby, raise can be called in several ways:# This is my favorite because it's so explicit raise RuntimeError.new("You messed...
What is going on here?💡 Explanation:The reason why intransitive equality didn't hold among dictionary, ordered_dict and another_ordered_dict is because of the way __eq__ method is implemented in OrderedDict class. From the docs Equality tests between OrderedDict objects are order-sensitive ...
No number or Time is blank. Frankly I don’t know why these methods were implemented separately here and why the implementation fromObjectis not enough. Perhaps for speed of not checking if they haveempty?method which they don’t… classNumeric#:nodoc:# 1.blank? # => false# 0.blank? #...
Defining variables at the OS level makes them globally available, which is quite helpful when you want to run the app without depending on internal values. You can also reference defined variables in scripts or command-line arguments. python app.py --db-name $DB_NAME --db-host $DB_HOST -...
"From inside a try block, initialize only variables that are declared therein.." "IEnumerable<T>'requires '1' type arguments" error "Member names cannot be the same as their enclosing type." "MS Paint" source code is required please "No mapping exists from object type System.Collections.Gen...
Teachable code is code that makes the specific concept being taught as explicit as possible. In other words, it’s objectively making the code as readable as possible for a specific concept for an absolute beginner. Let’s look at an example - writing an initialize method for a Ruby class....
19: invokevirtual#30 // Method m:()I22: putfield#24 // Field m2:I25:return In the constant pool, we see that the reference to methodm()is stored at index#30. In the constructor code, we see that this method is invoked twice during initialization, with the instructioninvokevirtual #30...
While many people are familiar with Java from interactive website features, users may be less familiar with JavaScript — or, indeed, they may wrongly consider the two to be the same.In this article, we discuss what JavaScript is and the differences between Java and JavaScript. Then we’ll ...
Note: This function checks the text format but not the validity of a what3words address. UseisValid3wato verify validity. require'what3words'defmain# Initialize the What3Words API with your API keyapi_key='YOUR_API_KEY'w3w=What3Words::API.new(:key=>api_key)# Example what3words addres...
(the === operator), but we know that Ruby operators are just syntactic sugar for method calls. So whenever awhenis trying to match a value (except when we are using a no-valuecase) there is a method call behind the scenes to the === method/operator. We can therefore take our very...