F
False

The keyword false is a predefined value representing the result of a conditional expression whose condition is not satisfied. For example, in the conditional expression x < y, if x is not less than y, the result of the expression will be false.

See also [Bool]
Fencepost Error

A fencepost error is a logical error that causes a loop to be executed one more or one fewer time than the correct count. A common cause of this error is confusing the number of elements in a vector or array with the index of the last element. The derivation of this term is by analogy with the problem of calculating the number of fence sections and fenceposts that you need for a given fence. For example, if you have to put up a fence 100 feet long and each section ...

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