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Effectively, the following when structure:
when (s) {
s1, s2 -> e1,
s3 -> e2,
s4 -> e3,
...
else -> e
}
is implemented as:
when (s.hashCode()) {
h1 -> {
if (s == s1)
e1
else if (s == s2)
e1
else if (s == s3)
e2
else
e
}
h2 -> if (s == s3) e2 else e,
...
else -> e
}
where s1.hashCode() == s2.hashCode() == s3.hashCode() == h1,
s4.hashCode() == h2.
A tableswitch or lookupswitch is used for the hash code lookup.
Change-Id: I087bf623dbb4a41d3cc64399a1b42342a50757a6
20 lines
346 B
Kotlin
Vendored
20 lines
346 B
Kotlin
Vendored
fun foo1(x : String) : String {
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when (x) {
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"abc", "cde" -> return "abc_cde"
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"efg", "ghi" -> return "efg_ghi"
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}
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return "other"
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}
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fun foo2(x : String) : String {
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when (x) {
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"abc", "cde" -> return "abc_cde"
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"efg", "ghi" -> return "efg_ghi"
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else -> return "other"
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}
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}
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// 2 LOOKUPSWITCH
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