Elements of Lists

list[[...]] (Part) — parts of lists, resettable with

Span (;;) — general specification for spans or blocks of elements

First ▪ Last ▪ Rest ▪ Most ▪ Take ▪ Drop ▪ TakeWhile

Append ▪ Prepend ▪ Insert ▪ Delete ▪ AppendTo ▪ PrependTo

Position — find positions of elements matching a pattern

Extract ▪ ReplacePart ▪ MapAt ▪ ArrayRules ▪ Ordering

Length ▪ Dimensions ▪ ArrayDepth ▪ LengthWhile

Select — select elements that satisfy a criterion

Cases — give elements that match a pattern

Pick ▪ DeleteCases ▪ BinLists ▪ Count ▪ DeleteDuplicates

MemberQ — test whether an element is a member of a list

FreeQ ▪ ArrayQ ▪ VectorQ ▪ MatrixQ

• Parts of Matrices
• Parts of Expressions
• Rearranging & Restructuring Lists
• Constructing Lists
• Handling Arrays of Data