dependencies

问题 I was reading Wikipedia's definition of Dependency inversion principle, and it uses two terms High-level modules and low-level modules , which I wasn't able to figure out. What are they and what does Dependency inversion principle have to do with them? 回答1: The definition of those are given in the introductory sentence: high level: policy setting low level: dependency modules. In laymen's terms: high level modules depend on low level modules, but shouldn't depend on their implementation. This

问题 This is in a way a follow-up of a previously unanswered question of mine (link) which excalated over the past weeks, and now it has come to a point where I cant really develop anymore... So here's the deal; I have more of a mathematics/engineering background than pure CS, so I dont have a lot of experience with proper/large-scale software development, but rather scripting and algorithms. Now that I am working on a large project, on my own, I am confused with some of the aspects of development

问题 Building a package results in the following warning: * checking for unstated dependencies in tests ... WARNING ‘library’ or ‘require’ call not declared from: ‘testthat’ * checking tests ... Running ‘test-all.R’ OK * checking PDF version of manual ... OK WARNING: There was 1 warning. The package directory has a folder called tests , with a file test-all.R: library(testthat) library(bootLR) test_package("bootLR") Then a subfolder testthat with two files in it that hold the various tests. The

问题 I have updated my android studio to 2.2 preview 1 and applied the specified dependencies for google and firebase as specified but still getting the following error EmptyThrowable: Wrong dependency type: class com.android.tools.idea.databinding.DataBindingUtil$LightBRField dataBinding { enabled true } 回答1: You can update the Google repository in the Android Software Development Kit (SDK). The fastest way to do it to click: Help> Check for updates 回答2: Just use latest Android Studio 3.1.3 or

问题 So I finally got my dependencies working with Grails. Now, how can my IDE, eg IntelliJ or Eclipse, take advantage of it? Or do I really have to manually manage what classes my IDE knows about at "development time" ? If the BuildConfig.groovy script is setup right (see here), you will be able to code away with vi or your favorite editor without any troubles, then run grails compile which will resolve and download the dependencies into the Ivy cache and off you go ... If, however, you are using

问题 So I finally got my dependencies working with Grails. Now, how can my IDE, eg IntelliJ or Eclipse, take advantage of it? Or do I really have to manually manage what classes my IDE knows about at "development time" ? If the BuildConfig.groovy script is setup right (see here), you will be able to code away with vi or your favorite editor without any troubles, then run grails compile which will resolve and download the dependencies into the Ivy cache and off you go ... If, however, you are using

问题 I.e. why is the following "cyclic dependency" not possible? public class Something implements Behavior { public interface Behavior { // ... } } Since interfaces don't reference the outer class this should be allowed; however, the compiler is forcing me to define those interfaces outside the class. Is there any logical explanation for this behavior? 回答1: Relevant rules in spec: http://java.sun.com/docs/books/jls/third_edition/html/classes.html#8.1.4 A class C directly depends on a type T if T

问题 I had some problems with my solution's references since somebody went and messed up NuGet... restoring from source control rendered the projects unloadable, and I had to play around a bit to finally get things to load. When I was finally able to get my projects to load properly (after one heck of a headache), I had a pretty big experimental mess to clean up, and now nothing builds. Nuget thinks my dependencies are installed. Visual Studio disagrees. What do I have to do to make NuGet and

问题 I have an integration test source set in gradle, and it is dependent on my main classes being compiled. I set that up by doing integrationTestClasses.dependsOn 'classes' Is this the way to do it, or is there a way to setup dependencies on source sets so this happens automatically? In my configurations block I already have integrationTestCompile { extendsFrom testCompile } integrationTestRuntime { extendsFrom integrationTestCompile, testRuntime } 回答1: What's missing is: dependencies {

问题 When I use Maven versions:display-dependency-updates to check dependencies updates, I get two sections of result. 1st: The following dependencies in Dependency Management have newer versions: 2nd: The following dependencies in Dependencies have newer versions: What's the difference between these two? 回答1: The Dependency section of the POM defines the artifacts (jars, zip etc) upon which your project depends. i.e. the artifacts that it requires to compile, run etc. The Dependency Management