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tuple-for-comprehension.scala
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tuple-for-comprehension.scala
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object Test {
def main(args: Array[String]) = {
assert(Some(2) == (for {
x1 <- Some(1)
x2 = x1
} yield x1 + x2))
assert(Some(3) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
} yield x1 + x2 + x3))
assert(Some(4) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
} yield x1 + x2 + x3 + x4))
assert(Some(5) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
} yield x1 + x2 + x3 + x4 + x5))
assert(Some(6) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
x6 = x1
} yield x1 + x2 + x3 + x4 + x5 + x6))
assert(Some(21) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
x6 = x1
x7 = x1
x8 = x1
x9 = x1
x10 = x1
x11 = x1
x12 = x1
x13 = x1
x14 = x1
x15 = x1
x16 = x1
x17 = x1
x18 = x1
x19 = x1
x20 = x1
x21 = x1
} yield x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 + x17 + x18 + x19 + x20 + x21))
assert(Some(22) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
x6 = x1
x7 = x1
x8 = x1
x9 = x1
x10 = x1
x11 = x1
x12 = x1
x13 = x1
x14 = x1
x15 = x1
x16 = x1
x17 = x1
x18 = x1
x19 = x1
x20 = x1
x21 = x1
x22 = x1
} yield x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 + x17 + x18 + x19 + x20 + x21 + x22))
assert(Some(23) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
x6 = x1
x7 = x1
x8 = x1
x9 = x1
x10 = x1
x11 = x1
x12 = x1
x13 = x1
x14 = x1
x15 = x1
x16 = x1
x17 = x1
x18 = x1
x19 = x1
x20 = x1
x21 = x1
x22 = x1
x23 = x1
} yield x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 + x17 + x18 + x19 + x20 + x21 + x22 + x23))
assert(Some(24) == (for {
x1 <- Some(1)
x2 = x1
x3 = x1
x4 = x1
x5 = x1
x6 = x1
x7 = x1
x8 = x1
x9 = x1
x10 = x1
x11 = x1
x12 = x1
x13 = x1
x14 = x1
x15 = x1
x16 = x1
x17 = x1
x18 = x1
x19 = x1
x20 = x1
x21 = x1
x22 = x1
x23 = x1
x24 = x1
} yield x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 + x17 + x18 + x19 + x20 + x21 + x22 + x23 + x24))
}
}