Loops/Wrong ranges: Difference between revisions

Line 5:

Some languages have syntax or function(s) to generate a range of numeric values from a start value, a stop value, and an increment.

The purpose of this task is to select the range syntax/function that would generate at least two increasing numbers when given a stop value more than the start value and a positive increment of less than half the difference. You are ~~than~~ to use that ''same'' syntax/function but with different parameters; and show, here, what would happen.

The purpose of this task is to select the range syntax/function that would generate at least two increasing numbers when given a stop value more than the start value and a positive increment of less than half the difference. You are then to use that ''same'' syntax/function but with different parameters; and show, here, what would happen.

Use these values if possible:

Line 690:

Start equal stop equal zero: zero increment

Range(0, 0, 0) -> [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

</pre>

=={{header|langur}}==

<lang langur>val .data = q:block END

start stop increment comment

-2 2 1 Normal

-2 2 0 Zero increment

-2 2 -1 Increments away from stop value

-2 2 10 First increment is beyond stop value

2 -2 1 Start more than stop: positive increment

2 2 1 Start equal stop: positive increment

2 2 -1 Start equal stop: negative increment

2 2 0 Start equal stop: zero increment

0 0 0 Start equal stop equal zero: zero increment

END

# Process .data string into .table.

var .table = map(f replace(.s, RE:m/^\s+/), split("\n", .data))

.table = map(f split(RE/\s\s+/, .s), .table)

for .i in 2..len(.table) {

.table[.i] = map(f { if(.i2==4: .s2; toNumber(.s2)) }, 1..4, .table[.i])

}

for .test in rest(.table) {

var (.start, .stop, .inc, .comment) = .test

{

val .series = series(.start to .stop, .inc)

catch {

writeln $"\.comment;\nERROR: \.err["msg"]:L200(...);\n"

} else {

writeln $"\.comment;\nresult: \.series;\n"

}

}</lang>

<pre>Normal

result: [-2, -1, 0, 1, 2]

Zero increment

result: []

Increments away from stop value

ERROR: Expected positive range with positive increment, or negative range with negative increment

First increment is beyond stop value

result: [-2]

Start more than stop: positive increment

ERROR: Expected positive range with positive increment, or negative range with negative increment

Start equal stop: positive increment

result: [2]

Start equal stop: negative increment

result: [2]

Start equal stop: zero increment

result: []

Start equal stop equal zero: zero increment

result: []

</pre>