Until - Function Summary

Summary:

Evaluates a block until it is TRUE.

Usage:

until block

Arguments:

block - The block argument. (must be: block)

Description:

Evaluates a block until the block returns a TRUE value (that is, the last expression in the block is TRUE).

str: "string"
until [
    print str
    tail? str: next str
]
string
tring
ring
ing
ng
g

for - Repeats a block over a range of values. repeat - Evaluates a block a number of times or over a series. while - While a condition block is TRUE, evaluates another block.

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