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The following list contains syntax examples of how a range of element of an array can be accessed. In the following table: first – the index of the first element in the slice; last – the index of the last element in the slice; end – one more than the index of last element in the slice; len – the length of the slice (= end - first)
string.indexOf(substring«,startpos») Java, JavaScript: returns −1 string.IndexOf(substring«,startpos«, charcount»») VB .NET, C#, Windows PowerShell, F#: returns −1 string:str(string, substring) Erlang: returns 0 (string-contains string substring) Scheme (SRFI 13) returns #f (search substring string) Common Lisp: returns NIL (string ...
In these three, sequence types (C arrays, Java arrays and lists, and Lisp lists and vectors) are indexed beginning with the zero subscript. Particularly in C, where arrays are closely tied to pointer arithmetic, this makes for a simpler implementation: the subscript refers to an offset from the starting position of an array, so the first ...
program, which would be done with position = "Hello, World". indexOf ("World"), which would return 7. If one instead asks for the position = "Hello, World". indexOf ("Goodbye") the code will "fail", as the search term does not appear in the string. In JavaScript, as in most languages, this will be indicated by returning a magic number, in this ...
A string in JavaScript is a sequence of characters. In JavaScript, strings can be created directly (as literals) by placing the series of characters between double (") or single (') quotes. Such strings must be written on a single line, but may include escaped newline characters (such as \n).
If a server is configured to support server-side scripting, the list will usually include entries allowing dynamic content to be used as the index page (e.g. index.cgi, index.pl, index.php, index.shtml, index.jsp, default.asp) even though it may be more appropriate to still specify the HTML output (index.html.php or index.html.aspx), as this ...
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In PHP and R, all arrays can be associative, except that the keys are limited to integers and strings. In JavaScript (see also JSON), all objects behave as associative arrays with string-valued keys, while the Map and WeakMap types take arbitrary objects as keys. In Lua, they are used as the primitive building block for all data structures.