January 2017
Intermediate to advanced
420 pages
9h 25m
English
Content preview from Programming KotlinBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Named parameters
Named parameters allow us to be explicit about naming arguments when passed to a function. This has the benefit that for functions with many parameters, explicit naming makes the intent of each argument clear. This makes the call site more readable.
In the following example, we check to see whether the first string contains a substring of the second:
val string = "a kindness of ravens"
string.regionMatches(14, "Red Ravens", 4, 6, true)
To use named parameters, we put the parameter name before the argument value. Here is the function call again, this time with named parameters:
string.regionMatches(thisOffset = 14, other = "Red Ravens", otherOffset = 4, length = 6, ignoreCase = true)
This second example is more readable at the cost ...
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