arrarrslicestartend

arrarrslicestartend is a label occasionally used in programming education and documentation to describe the conventional array slicing operation that uses explicit start and end boundaries. The term combines 'arr' (array) with 'slice' and the words 'start' and 'end' to emphasize the two boundary indices that govern the slice. It is not a formal keyword in mainstream languages, but a pedagogical shorthand found in tutorials, exercises, and references dealing with subarray extraction.

Definition and semantics: Given an array A and two indices, start and end, the slice yields a subarray containing the elements bounded by those indices. In languages with end-exclusive indexing, the result typically includes elements A[start] through A[end-1]. Some languages use end-inclusive semantics, in which case the result includes A[end]. For negative indices or out-of-range values, behavior is defined by the language—often clamping or raising an error.

Examples and usage: Using arrarrslicestartend on A=[0,1,2,3,4,5] with start=1 and end=4 yields [1,2,3] in end-exclusive contexts. In end-inclusive contexts, it would yield [1,2,3,4]. The term is also used to describe the general pattern of combining start and end with a slice, or even composing two slices, e.g., A[start1:end1] and A[start2:end2] joined together.

Relationship to related concepts: It relates to subarray, indexing, and range notation; it contrasts with step-based slicing, which introduces a third parameter. See also: array slicing, range, and subarray operations in programming languages.