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As in curly bracket languages, whitespace is mostly ignored by the reader (i.e., the read function). Whitespace is used to separate tokens. [5] The explicit structure of Lisp code allows automatic indenting, to form a visual cue for human readers. Another alternative is for each block to begin and end with explicit keywords.
In computer programming, indentation style is a convention, a.k.a. style, governing the indentation of blocks of source code.An indentation style generally involves consistent width of whitespace (indentation size) before each line of a block, so that the lines of code appear to be related, and dictates whether to use space or tab characters for the indentation whitespace.
Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [ 35 ]
The actual statement is in columns 7 through 72 of a line. Any non-space character in column 6 indicates that this line is a continuation of the prior line. A 'C' in column 1 indicates that this entire line is a comment. Columns 1 though 5 may contain a number which serves as a label.
These unnecessary characters usually include whitespace characters, new line characters, comments, and sometimes block delimiters, which are used to add readability to the code but are not required for it to execute. Minification reduces the size of the source code, making its transmission over a network (e.g. the Internet) more efficient.
The number of code points in each block must be a multiple of 16. A block may contain code points that are reserved, not-assigned, etc. Each character that is assigned, has a single "block name" value from the 338 names assigned as of Unicode version 16.0. Unassigned code points outside of an existing block have the default value "No_block".
Whitespace is not always desirable. It can give the page an untidy appearance and make the article look incomplete. But it cannot always be avoided, and there are times, when used sparingly, whitespace can enhance readability and visual balance, helping readers to better navigate and absorb the content on the page.
HTML 5.0 invisible times ⁣ ⁣, U+2063 HTML 5.0 invisible separator (invisible comma) € € U+20AC HTML 4.0 HTMLspecial New euro sign ℂ ℂ ℂ: U+2102 HTML 5.0 ISOmopf double-struck capital C (Complex number, open-face capital C) ℅ ℅ U+2105 HTML 5.0 ISOpub care of ℊ ℊ: U+210A HTML 5.0 ISOmscr ...