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std::cond
a multiway conditional expression or statement
Parameter
- args*
- a sequence of functions that return a boolean and a function
Result
- results
- whatever the selected function returns
Description
Each argument is a function that returns two results:
a boolean value (std::true or std::false)
and
a function (statement sequence)
The arguments are evaluated in order and as soon as an argument returns std::true the corresponding function is called.
If none of the arguments returns std::true no function is called.
Example
$chr '7'
cond
-> chr >= 'a' && chr <= 'z':
println! "lower case character"
-> chr >= 'A' && chr <= 'Z':
println! "upper case character"
-> chr == '_':
println! "underscore"
-> chr >= '0' && chr <= '9':
println! "digit"
-> true:
println! "neither character nor digit nor underscore"
Output
digit
Topic
Branches
See also
| std::if |
classic if; can be used as a function or a procedure |
| std::case |
a multiway conditional expression or statement |