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In Java associative arrays are implemented as "maps", which are part of the Java collections framework. Since J2SE 5.0 and the introduction of generics into Java, collections can have a type specified; for example, an associative array that maps strings to strings might be specified as follows:
add a new (,) pair to the collection, mapping the key to its new value. Any existing mapping is overwritten. The arguments to this operation are the key and the value. Remove or delete remove a (,) pair from the collection, unmapping a given key from its value. The argument to this operation is the key.
int, integer (up to 64 bits signed or unsigned) float, floating point numbers (IEEE single/double precision) str, UTF-8 string; bin, binary data (up to 2 32 − 1 bytes) array; map, an associative array; ext (arbitrary data of an application-defined format, up to 2 32 − 1 bytes) timestamp (ext type = −1) (up to 64-bit seconds and 32-bit ...
C# provides a built-in decimal type, [95] which has higher precision (but less range) than the Java/C# double. The decimal type is a 128-bit data type suitable for financial and monetary calculations. The decimal type can represent values ranging from 1.0 × 10 −28 to approximately 7.9 × 10 28 with 28–29 significant digits. [96]
UTF-8-encoded, preceded by 32-bit integer length of string in bytes Vectors of any other type, preceded by 32-bit integer length of number of elements Tables (schema defined types) or Vectors sorted by key (maps / dictionaries) Ion [18] \x0f [b]
FreeBSD uses 64-bit time_t for all 32-bit and 64-bit architectures except 32-bit i386, which uses signed 32-bit time_t instead. [24] The x32 ABI for Linux (which defines an environment for programs with 32-bit addresses but running the processor in 64-bit mode) uses a 64-bit time_t. Since it was a new environment, there was no need for special ...
Examples of value types are all primitive types, such as int (a signed 32-bit integer), float (a 32-bit IEEE floating-point number), char (a 16-bit Unicode code unit), decimal (fixed-point numbers useful for handling currency amounts), and System. DateTime (identifies a specific point in time with nanosecond precision).
An identifier is the name of an element in the code.It can contain letters, digits and underscores (_), and is case sensitive (FOO is different from foo).The language imposes the following restrictions on identifier names: