terminology

问题 Difference between ioc and dependency injection . explain dependency injection in spring. What is difference b/w JSF dependency injection and spring dependency injection.. 回答1: IoC means Inversion of Control. Let’s see some “strongly coupled code” (“MyComponent” depends on “Logger”): public class MyComponent { public MyComponent() { : } public void DoSomeWork() { var logger = new Logger(); : } } We can change it to use an “interface“, but someone must provide the “implementation“: public

问题 Can anyone tell me what a bit field is in layman's terms? I am doing a PHP course in debugging and the instructor is using that term a lot. This is in the context of PHP error reporting. Here is a quote from the transcript: Error reporting sets the error reporting level with an integer representing a bit field normally through a named constant. By default, PHP reports everything except E_NOTICE and for versions prior to PHP 5.4, also excluding E_STRICT. I think it's important as an aspiring

问题 Context While I was reading Consistent comparison, I have noticed a peculiar usage of the verb to compare : There’s a new three-way comparison operator, <=>. The expression a <=> b returns an object that compares <0 if a < b, compares >0 if a > b, and compares ==0 if a and b are equal/equivalent. Another example found on the internet (emphasis mine): It returns a value that compares less than zero on failure. Otherwise, the returned value can be used as the first argument on a later call to

问题 What are futures? It's something to do with lazy evaluation. 回答1: There is a Wikipedia article about futures. In short, it's a way to use a value that is not yet known. The value can then be calculated on demand (lazy evaluation) and, optionally, concurrently with the main calculation. C++ example follows. Say you want to calculate the sum of two numbers. You can either have the typical eager implementation: int add(int i, int j) { return i + j; } // first calculate both Nth_prime results

问题 I'm currently reading a book by Daniel M. Solis called "Illustrated C# 2010." The book says: "When a method is called or invoked ..." What is the difference between these two terms? 回答1: Function calling is when you call a function yourself in a program. While function invoking is when it gets called automatically. For example, consider this program: struct s { int a,b,s; s() { a=2; b=3; } void sum() { s=a+b; } }; void main() { struct s obj; //line 1 obj.sum(); // line 2 } Here, when line 1

问题 I want to learn what is it called -if there is any name for it- when you convert a name to a URL parameter, like, urldecode() in PHP. Suppose in my database, I list some TV series, and one row is for The Big Bang Theory , I usually do it like: title name ------ ----- The Big Bang Theory the-big-bang-theory So is there a specific name for the second column, named "name"? I remember something like "slug" or "stub" from one of the CMS’. 回答1: http://example.com/articles/the-big-bang-theory

问题 IoC = Inversion Of Control DIP = Dependency Inversion Principle (D in S.O.L.I.D.) IoC == DIP ? I think so, is true. The world of building software is already so messy, why so many words to say the same thing? (I know DI (Dependency Injection) and it is different of DIP and IoC ) Update: According to the answers, then we can say that: ( DI ) + ( IoC ) = ( Dependency Inversion Principle ) ? 回答1: Inversion of Control is the generic term. Dependency Injection is a specific type of IoC. See

问题 Hy Python Community - This is a basic terminology question about Argv and "invoke" I'm new to python and programmring. I was reading about the argv function in the sys module on openbookproject.com: "The argv variable holds a list of strings read in from the command line when a Python script is run. These command line arguments can be used to pass information into a program at the same time it is invoked ." http://openbookproject.net/thinkcs/python/english2e/ch10.html It seems really clear

问题 How can I import and sort this data (following code section) to be readily manipulated by R? Are the organ names, dose unit 'Gy', volume unit 'CC' all three considered 'factors' by R? What is the terminology for the data set name and data variables? These histograms place one data set sequentially after the other as follows: Example Data File: Bladder,, GY, (CC), 0.0910151,1.34265 0.203907,1.55719 [skipping to end of this data set] 57.6659,0.705927 57.7787,0.196091 ,, CTV-operator,, GY, (CC),

问题 What is document data store ? What is key-value data store ? Please, describe in very simple and general words the mechanisms which stand behind each of them. 回答1: In a document data store each record has multiple fields, similar to a relational database. It also has secondary indexes. Example record: "id" => 12345, "name" => "Fred", "age" => 20, "email" => "fred@example.com" Then you could query by id, name, age, or email. A key/value store is more like a big hash table than a traditional