# Command: get

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Name:

    get - retrieve element indexed Object of a container

Synopsis:

      array/proc/litproc/string int --> obj
      dict literal	 --> obj
      dict array	 --> obj

Examples:

      (Hello World!)	 0	 get --> 184
      [(Hello) 1 /a 12]   1	 get --> 1
      {(Hello World!) ==} 1	 get --> ==
      systemdict	 /get	 get --> +get+
      [/a /b /c /d] [0 2]	 get -> [/a /c]
      << /a 3 /c 2 >>  /c	 get --> 2
      << /a 3 /c 2 >>  [/c]	 get --> 2
      << /a 3 /c 2 >>  [[/c]]	 get --> [2]
      << /a 3 /c 2 >>  [[/c /a /a]]	 get --> [2 3 3]
      << /a << /b 3 /c 2 >> >>  [/a /c]	 get --> 2
      << /a << /b 3 /c 2 >> >>  [/a [/b /c]] get --> [3 2]

Description:

      get will call the various typedependend get operators, returning
      the specified object. There are many possibilities for the
      combination of types, see examples.

      Alternatives: Functions get_a for arrays, get_p for procedures,
      get_lp for literal procedures, get_s for strings, get_d and get_d_a
      for dictionaries (all undocumented)
      -> behavior and synopsis are the same.

Parameters:

      array/proc/litproc/string/dict is the container,
      int/literal is the index for the lookup.
      The object returned depends on the container contents.

      For arrays it is also possible to use an array of indices.
      In this case, individual indices may appear more than once.

      For dictionaries the interpretation of the array argument is identical to
      the one of the index array of operator Part. This is useful to extract
      data from nested dictionaries and arranging them for further numerical
      processing. The array elements are sequentially applied from left to right
      to the object resulting from the get operation of the previous element.
      If an array element is itself an array, its elements are simultaneously
      applied to the argument and the result is an array of the same size.

      Applications of SLI like the NEST kernel may impliment variants
      of get to provide a homogeneous interface to further containers.

Author:

    Gewaltig, Diesmann

FirstVersion:

    ??

SeeAlso:

- get_d
- put
- Part
- getinterval

Source:

    /opt/conda/conda-bld/nest_1510212701067/work/nest-2.14.0/lib/sli/sli-init.sli

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