II//sdss7, Data Release 7 (,, primary sources, plus 65,, that 2 different SDSS objects share the same SDSS name (). 1. J/ApJ//48/sample, Sample source properties (tables 1 and 2) (87 rows) ( Q=QSO, BLZ=blazar, BLRG=broad_line radio galaxy, fnt=faint) (). [0/1] Fmag quality of the PSF fitting Qfit () (CODE_QUALITY). f_Fmag, [0/7] Quality flag (best=1) on Fmag (Note 2) ().

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Others have to be defined per project. It is thus important to metaclde the former as easy as possible. Initializing an array with elements avoid! Avoid global variables Best Practice: Instead, this chapter describes meta style rules and surveys existing style guides and established best practices. Good code is like a textbook Most code bases are filled with new ideas and concepts.

Tight whitespace I like relatively tight whitespace. Other considerations are mentioned in String Literals. There are two important rules for writing consistent code. For constructors, it is important to use strict mode, because it protects you metscode forgetting the new operator for instantiation. If those functions are small enough and have meaningful names, you can often avoid comments.

If you return an object literal, you must put the opening brace in the same line as the keyword returnlike this otherwise, automatic semicolon insertion inserts a semicolon after returnmeaning that nothing is returned; see Pitfall: It is a metxcode you are accessing a prototype property via an instance. The rationale metacodr that this is what a named function expression looks like if you remove metacdoe name: And there are spaces after commas: It is also easier to remove the code fragment or to move it somewhere else.


That can mean that using familiar, slightly more verbose, constructs can be preferable. This section collects examples of unrecommended cleverness.

In modern engines, using instances of constructors is very fast e. Most of them have generally agreed-upon answers.

Coerce a value to a type via BooleanNumberStringObject used as functions—never use those functions as constructors. Popular Conventions on GitHub analyzes GitHub code to find out which coding conventions are most frequently used. The rationale is that this convention is more descriptive: Sometimes you can be clever in JavaScript—if the cleverness has become an established pattern.

The larger the team, the more important it is to check for adherence to the style automatically, via tools such as JSHint. Using the Or operator to provide default values is a common pattern—for mehacode, for parameters: If you need to know a concept to understand the code, you can either include the name of the concept in an identifier or mention it in a comment.

You can write string literals with either single quotes or double quotes in JavaScript.

The latter is normally the better choice: Several constructors produce objects that can also be created by literals. As an exception, I omit braces if a statement can be written in a single line. But it reduces clutter, and I expect engines to eventually optimize this pattern.


FlexibleSUSY: Meta code – Hepforge

Second, humans read tokens, not characters. Everyone knows that debugging is twice as hard as writing a program in the first place. They will jump in anywhere and should be able to roughly understand what is going on. I like metacoxe tight whitespace.

6.2 Metacode

Allman style and 1TBS. Code Should Be Easy to Understand.

Changing undefined explains why. It also mentions practices I like that are more controversial. As an addendum to the previous rule: It should also contain a glossary for all important concepts.

This is more self-explanatory and safer than comparing with undefined or checking for truthiness:. Most code bases are filled with new ideas and concepts. More tips for using constructors are mentioned in Tips for Implementing Constructors. First, familiar things are easier to understand. Thus, there is no need to write yet another one. To write such code, use descriptive identifiers and break up long functions or methods into smaller subfunctions.

Avoid the pitfalls of automatic semicolon insertion see Automatic Semicolon Insertion.

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