What is [cmdletbinding()] and how does it work?

Generally speaking, CmdletBinding is what makes a function into an Advanced function. Putting it at the top of a script makes the script an “advanced” script. Functions and scripts are much the same, where the script file name is equivalent to the function name and the script content is equivalent to the scriptblock section of … Read more

Pass property itself to function as parameter in C#

You can pass a property accessor to the method. List<Class1> SortBy(List<Class1> toSort, Func<Class1, IComparable> getProp) { if (toSort != null && toSort.Count > 0) { return toSort .OrderBy(x => getProp(x)) .ToList(); } return null; } You would call it like this: var result = SortBy(toSort, x => x.maxSpeed); But you could go one step further … Read more

AngularJS Directive Passing String

In your directive, you’re using the bi-directional binding of attributes from the global scope to the directive local scope. In this mode, the attribute value in the html is evaluated as an expression and thus your directive tries to bind its local scope.error to the result of evaluating true as an expression. When you test … Read more

What do * (single star) and / (slash) do as independent parameters? [duplicate]

There is a new function parameter syntax / to indicate that some function parameters must be specified positionally and cannot be used as keyword arguments.[This is new in Python 3.8] Documentation specifies some of the use cases/benefits of positional-only parameters. It allows pure Python functions to fully emulate behaviors of existing C coded functions. For … Read more

MSBuild passing parameters to CallTarget

MSBuild targets aren’t designed to receive parameters. Instead, they use the properties you define for them. <PropertyGroup> <Environment>myValue</Environment> </PropertyGroup> <Target Name=”Deploy”> <!– Use the Environment property –> </Target> However, a common scenario is to invoke a Target several times with different parameters (i.e. Deploy several websites). In that case, I use the MSBuild MSBuild task … Read more

How can I use “Dependency Injection” in simple php functions, and should I bother?

Dependency injection is a big word for “I have some more parameters in my constructor”. It’s what you did before the awfull Singleton wave when you did not like globals : <?php class User { private $_db; function __construct($db) { $this->_db = $db; } } $db = new Db(); $user = new User($db); Now, the … Read more

Passing variables, creating instances, self, The mechanics and usage of classes: need explanation [closed]

class Foo (object): # ^class name #^ inherits from object bar = “Bar” #Class attribute. def __init__(self): # #^ The first variable is the class instance in methods. # # This is called “self” by convention, but could be any name you want. #^ double underscore (dunder) methods are usually special. This one # gets … Read more

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