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Java Object Serialization: Yes No Yes No ... Array Associative array/Object; ASN.1 (XML Encoding Rules) ... (or an empty element in the row) a: 1 a true a: 0 a false a:
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The array, set and dictionary binary types are made up of pointers - the objref and keyref entries - that index into an object table in the file. This means that binary plists can capture the fact that - for example - a separate array and dictionary serialized into a file both have the same data element stored in them.
In addition to support for vectorized arithmetic and relational operations, these languages also vectorize common mathematical functions such as sine. For example, if x is an array, then y = sin (x) will result in an array y whose elements are sine of the corresponding elements of the array x. Vectorized index operations are also supported.
ASCII hugely influenced the design of character sets used by modern computers, including Unicode which has over a million code points, but the first 128 of these are the same as ASCII. The Internet Assigned Numbers Authority (IANA) prefers the name US-ASCII for this character encoding. [2] ASCII is one of the IEEE milestones. [4]
On some terminals, these characters are not available at all, and the complexity of the escape sequences discouraged their use, so often only ASCII characters that approximate box-drawing characters are used, such as - (hyphen-minus), | (vertical bar), _ , = and + in a kind of ASCII art fashion.
In particular, the C definition explicitly declares that the syntax a[n], which is the n-th element of the array a, is equivalent to *(a + n), which is the content of the element pointed by a + n. This implies that n[a] is equivalent to a[n], and one can write, e.g., a[3] or 3[a] equally well to access the fourth element of an array a.
(This illustrates something of the mnemonic character of J's tokens, and some of the quandaries imposed by the use of ASCII.) Defining a J function named avg to calculate the average of a list of numbers yields: avg =: +/ % # +/ sums the items of the array. # counts the number of items in the array. % divides the sum by the number of items.