assert-sequence= ( a b -- )
Factor handbook » The language » Collections » Sequence operations » Comparing sequences

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drop-prefix ( seq1 seq2 -- slice1 slice2 )

Vocabulary
sequences

Inputs

a	a sequence
b	a sequence

Outputs
None

Word description
Throws an error if all the elements of two sequences, taken pairwise, are not equal.

Notes
The sequences need not be of the same type.

Examples

USING: prettyprint sequences ; { 1 2 3 } V{ 1 2 3 } assert-sequence=

Definition

USING: kernel ;

IN: sequences

: assert-sequence= ( a b -- )
    2dup sequence= [ 2drop ] [ assert-sequence ] if ;