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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Commonly Accepted Best Practices.

It is a hack you are accessing a prototype property via an instance. They make it easier to work with HTML code which normally has attribute values in double quotes.

Most of them have generally agreed-upon answers. JavaScript, the winning style examines what the majority of several popular style guides recommend. You can write string literals with either single quotes or double quotes in JavaScript.

As an addendum to the previous rule: It is thus metacodr to make the former as easy as possible. The preceding code has the same effect and intention as the following code, which is why it should be written that way:.

Tight whitespace I like relatively tight whitespace. Several constructors produce objects that can also be created by literals. Here, a block is more closely associated with the header of its statement; it starts after it, in the same line. That can mean that using familiar, slightly more verbose, constructs can be preferable.

Others have to be defined per project. If you use methods generically, you can abbreviate Object. A majority of JavaScript programmers mstacode on the following metacod practices: Code Should Be Consistent.


Everyone knows that debugging is twice as hard as writing a program in the first place. Prefer constructors over other instance creation patterns I recommend that you: As an exception, I omit braces if a statement can be written in a single line. That means that if you want to work with a code base, you need to learn those ideas and concepts.

One reason for that is objective.

FlexibleSUSY: Meta code – Hepforge

If those functions are small enough and have meaningful names, you can often mdtacode comments. In other words, you can declare a variable in the context in which it is used inside a loop, inside a then block or an else block, etc. Documentation should fill in the blanks left by the code and the comments.

I prefer four spaces per level of indentation, because that makes the indentation more visible. The following two expressions are equivalent: If you need to know a concept to understand the code, you can either metaode the name of the concept in metaacode identifier or mention it in a comment.

Your code better fits into the JavaScript mainstream and is more likely to be portable between frameworks. On one hand, JavaScript engines are becoming increasingly smart and automatically optimize the speed of code that follows established patterns.

I like relatively tight whitespace. And you should be aware that you can return any object in a constructor. ASI can unexpectedly break up statements:. For most code, the time used for reading it is much greater than the time used for writing it. The rationale is that this is what a named function expression looks like if you remove the name: Comments should explain why things are happening.


Single quotes are more common. For constructors, it is important to use strict mode, because it protects you against forgetting the new operator for instantiation. This helps with reading, because it is easier to make out the scope of the operator: Most code bases are filled with new ideas and concepts.

6.2 Metacode

This kind of local encapsulation makes a code fragment easier to understand in isolation. Avoid the pitfalls of automatic semicolon insertion see Automatic Semicolon Insertion. If you return an object literal, metafode 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 Metackde Coerce a value to a type via BooleanNumberStringObject used as functions—never use those functions as constructors.

They will jump in anywhere and should be able to roughly understand what is going on. Code should explain what is happening; it should be self-explanatory. Prefer Literals to Constructors.

Much cleverness is directed at these optimizations. This section collects examples of unrecommended cleverness. Coercing Coerce a value to a type via BooleanNumberStringObject used as functions—never use those functions as constructors. Two brace styles are most common in C-like languages such as Java and JavaScript: