code-structure | 易学教程

Why use short-circuit code?

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问题 Related Questions : Benefits of using short-circuit evaluation, Why would a language NOT use Short-circuit evaluation?, Can someone explain this line of code please? (Logic & Assignment operators) There are questions about the benefits of a language using short-circuit code, but I'm wondering what are the benefits for a programmer? Is it just that it can make code a little more concise? Or are there performance reasons? I'm not asking about situations where two entities need to be evaluated

How should I visualize the structure of my code? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I have an application written in Java. In is stored in several files. It uses different classes with different methods. The code is big and complicated. I think it would be easier to understand the code if I have a graphical model of the code (some kind of directed graph). Are there some standard methods for

Way/coding method to do activitylist/log

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问题 Ok so this question is not so much about the coding procedure, but more like a good and clean way to code this activitylist, i plan to build.. This activitylist will contain all activities on the page. So basically on all the actions made on the page, it will call something like a function insertActivity($stuff) to insert the activity about that e.g you just did something. Now I am wondering the coding way, how should I do it? Should I have the message "you just did something" in the row in

if-else or early return

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问题 Sometimes I like to use early return statements to prevent nesting if statement, which I find makes for less readable code. I am wondering if there is any objective or overwhelming general consensus as two which of the following patterns is better practice? I don't think this is a subjective question, since what I am really asking is there a near objective preference. void func() { if (a) { do b } else { do c } } or void func() { if (a) { do b return; } do c } 回答1: The first is better. Simply

merge multiple annotations with parameters

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问题 I have a problem with using multiple annotations that all say more or less the same thing but to different frameworks and I would like to group them all into one custom annotation. Currently it looks like this: @Column(name = "bank_account_holder_name") @XmlElement(name = "bank_account_holder_name") @SerializedName("bank_account_holder_name") @ApiModelProperty(name = "bank_account_holder_name", value = "The name of the recipient bank account holder") public String bankAccountHolderName; As

Creating an API for my software - Basic code structure

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问题 I'm currently writing a web software which is also going to be used by Client desktops via an API. The problem I'm facing right now is: Should I implement every action of adding/updating/deleting objects in the application twice? Once as it sits in the normal code and once isolated for the API? Or should I much rather use a system of OOP model classes that represent all objects in my database and use those for both the API and normal code? Or develop the API first hand and use it from my

Cleaning up a large, legacy Java project

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问题 I've been assigned to do some work on a huge Java project, and the influence of several iterations of developers is obvious. There is no standard coding style, formatting, naming conventions or class structure. It's a good day when I come across a class with Javadoc, and unit testing is a happy daydream. So far those of us on the project have been "blending in", adapting to the existing convention of whatever class we're working on, but the time is coming to impose some order and consistency.

Spark Java Code Structure

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问题 All Spark Java examples that I can find online use a single static class which contains the entire program functionality. How would I structure an ordinary Java program containing several non-static classes so that I can make calls to Spark preferably from several Java objects? There are several reasons why this is not entirely straight forward: JavaSparkContext needs to be available everywhere where new RDDs need to be created and it is not serializable. At the time of writing only a single

MVC Putting an action in the most appropriate correct controller

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问题 I was just wondering what the best practice approach is for deciding where to create an action/view in certain situations. If User hasMany Video where is the best place to create the action/view to show user videos? So within the Users account page 'My Videos' link do you just create a users/my_videos action and view. create videos/my_videos action and view. or as is most likely you would already have a Controller/Action of videos/index which would have search functionality. Simply use this

Spark Java Code Structure

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All Spark Java examples that I can find online use a single static class which contains the entire program functionality. How would I structure an ordinary Java program containing several non-static classes so that I can make calls to Spark preferably from several Java objects? There are several reasons why this is not entirely straight forward: JavaSparkContext needs to be available everywhere where new RDDs need to be created and it is not serializable. At the time of writing only a single spark context can work in a single JVM reliably . For now I am using one static class in my program