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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.
Technically, Perl does not have a convention for including block comments in source code, but POD is routinely used as a workaround. PHP. PHP supports standard C/C++ style comments, but supports Perl style as well. Python. The use of the triple-quotes to comment-out lines of source, does not actually form a comment. [19]
It specified the start and end of the here document. The redirect and the delimiting identifier do not need to be separated by a space: <<END or << END both work equally well. By default, behavior is largely identical to the contents of double quotes: variable names are replaced by their values, commands within backticks are evaluated, etc. [a]
There should be a space after a closing bracket, except where a punctuation mark follows (though a spaced dash would still be spaced after a closing bracket) and in unusual cases similar to those listed for opening brackets. Avoid adjacent sets of brackets. Either put the parenthetical phrases in one set separated by semicolons, or rewrite:
45 kg, not 45kg or 45 k g or 45 kgs 32 °C, not 32°C or 32° C 20 kN m or 20 kN⋅m, not 20 kNm or 20 k Nm π/2 rad, not π/2rad or π / 2 rad 50 %, not 50% or 50 percent (Note: % is not an SI unit, and many style guides do not follow this recommendation; note that 50% is used as adjective, e.g. to express concentration as in 50% acetic acid.)
Do not double-space the lines of the list by leaving blank lines after them. Doing this breaks the list into multiple lists, defeating the purpose of using list markup. This adversely affects accessibility (screen readers will tell the visually impaired user there are multiple lists), [1] and interferes with machine-parseability of the content ...
The CSV file format is one type of delimiter-separated file format. [2] Delimiters frequently used include the comma, tab, space, and semicolon. Delimiter-separated files are often given a ".csv" extension even when the field separator is not a comma. Many applications or libraries that consume or produce CSV files have options to specify an ...
var x1 = 0; // A global variable, because it is not in any function let x2 = 0; // Also global, this time because it is not in any block function f {var z = 'foxes', r = 'birds'; // 2 local variables m = 'fish'; // global, because it wasn't declared anywhere before function child {var r = 'monkeys'; // This variable is local and does not affect the "birds" r of the parent function. z ...