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std::update_if
updates one or more variables depending on a condition
Parameters
- condition
- true or false
- values*
- the original values of the variables to be updated
- body
- a function used to update the variables
Result
- values*
- the maybe updated values
Example
$x -5
update_if x < 0 &x -> -x
println! x
Output
5
Example
$items list("apples" "bananas" "cherries")
$already_processed_items list()
update_if items.is_not_empty &items &already_processed_items
-> range(items 2 -1) push(already_processed_items items(1))
dump! `items `already_processed_items
Output
items: list <2>
"bananas"
"cherries"
already_processed_items: list <1>
"apples"
Topic
Branches
See also
| std::update_if_not |
updates one or more variables depending on a condition |
| std::if |
classic if; can be used as a function or a procedure |
| std::if_not |
can be used as a function or a procedure |
Implemented by