First

Available

Returns the first element of a list.

Forms

First[expr]

First[expr, def]

Verified examplesFirst[{7, 2, 4}] → 7

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Used in

Visualize the Lorenz attractor - 1 step
Style text using filled curves - 2 steps
Create a Voronoi diagram - 3 steps
Nd solve delay differential equations read - 3 steps
Numerical nonlinear global optimization examples finding multiple optima method 2 - 3 steps
Legend specific values - 4 steps

Topics

Binary Data - Byte Arrays
Elements Of Lists - Finding Sublists
GPU Computing - Arrays
GPU Computing-Apple - Arrays
GPU Computing-NVIDIA - Arrays
List Manipulation - Elements of Lists »

Related

Part Last Rest Take SelectFirst FirstPosition FirstCase Length ArrayDepth ArrayQ Dimensions MatrixQ

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