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The AIX and HP-UX Fortran compilers convert all identifiers to lower case foo, while the Cray and Unicos Fortran compilers converted identifiers to all upper case FOO. The GNU g77 compiler converts identifiers to lower case plus an underscore foo_ , except that identifiers already containing an underscore FOO_BAR have two underscores appended ...
The choice of a variable name should be mnemonic — that is, designed to indicate to the casual observer the intent of its use. One-character variable names should be avoided except for temporary "throwaway" variables. Common names for temporary variables are i, j, k, m, and n for integers; c, d, and e for characters. int i;
Rename both files and directories; Rename all files in a directory recursively; Ignore hidden files when renaming; Case change: to UPPERCASE, to lowercase or to Only The First Letter; Add prefix or postfix to filenames; Search and replace parts of filenames (regular expressions are supported) Add ordered numbers to filenames (start, steps ...
Case is not important; upper case and lower case characters are treated equally. To find out for sure the SFN or 8.3 names of the files in a directory use: dir /x shows the short names if there is one, and the long names. or: dir /-n shows only the short names, in the original DIR listing format.
JavaScript is case sensitive, so the uppercase characters "A" through "Z" are different from the lowercase characters "a" through "z". Starting with JavaScript 1.5, ISO 8859-1 or Unicode letters (or \uXXXX Unicode escape sequences) can be used in identifiers. [ 5 ]
Prolog, for both atoms (predicate names, function names, and constants) and variables [20] Python, for variable names, function names, method names, and module or package (i.e. file) names [3] PHP uses SCREAMING_SNAKE_CASE for class constants; PL/I [21] R, for variable names, function names, and argument names, especially in the tidyverse style ...
1–17 character file name, which could be upper case letters or digits, and the period, with the requirement it not begin or end with a period, or have two consecutive periods. The Univac VS/9 operating system had file names consisting of Account name, consisting of a dollar sign "$", a 1-7 character (letter or digit) username, and a period (".").
The formal, primary Unicode name is unique over all names, only uses certain characters & format, and is guaranteed never to change. The formal name consists of characters A–Z (uppercase), 0–9, " " (space), and "-" (hyphen). Next to this name, a character can have one or more formal (normative) alias names. Such an alias name also follows ...