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Improve indexOf sample to showcase return value handling

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Remove sample reference from indexOf(Char) overload: both overloads are on
the same page, and showing the sample for indexOf(String) under indexOf(Char)
is redundant and misleading.
This commit is contained in:
Ilya Gorbunov
2019-11-29 20:11:07 +03:00
parent e30d87ee01
commit 555d503ff9
2 changed files with 9 additions and 6 deletions
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libraries/stdlib/samples/test/samples/text/strings.kt
+9 -5
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@@ -360,13 +360,17 @@ class Strings {
@Sample
fun indexOf() {
fun getSubstringDetails(str: String, toFind: String): String {
return "Found $toFind in $str at position ${str.indexOf(toFind)}"
fun matchDetails(inputString: String, whatToFind: String, startIndex: Int = 0): String {
val matchIndex = inputString.indexOf(whatToFind, startIndex)
return "Searching for '$whatToFind' in '$inputString' starting at position $startIndex: " +
if (matchIndex >= 0) "Found at $matchIndex" else "Not found"
}
val str = "Kotlin"
val toFind = "otli"
val inputString = "Never ever give up"
val toFind = "ever"
assertPrints(getSubstringDetails(str, toFind), "Found otli in Kotlin at position 1")
assertPrints(matchDetails(inputString, toFind), "Searching for 'ever' in 'Never ever give up' starting at position 0: Found at 1")
assertPrints(matchDetails(inputString, toFind, 2), "Searching for 'ever' in 'Never ever give up' starting at position 2: Found at 6")
assertPrints(matchDetails(inputString, toFind, 10), "Searching for 'ever' in 'Never ever give up' starting at position 10: Not found")
}
}