and how is it??
i just found out about it
Hello I am very new to Sibilant. I have this function and want to access the key value pair and update the value of the object. So far i can add to the object but cannot get the value (is a number) and update it. Here is what i have so far. After the "has it" i want to get the value and increment it. When i set it for the first time i want to set the value to 1
Thanks for your help
(def printstrs(arr)
(var myobj {})
(each item arr
(if (has-key? myobj item) (console.log "has it" )
(set myobj item 1 (console.log "adding" item))
)
))
(def printstrs (arr)
(var myobj {})
(each item arr
(if (has-key? myobj item)
(console.log "has it")
(do
(set myobj item 1)
(console.log "adding" item)))))Hello Helpers of Sibilant
I have a function that takes in a string array and returns a hash to the caller. The problem is I am not doing it right :)
This is what I have
thanks again
(def caller(arr)
(var stringHash arrayToHash(arr))
)
(def arrayToHash(arr)
(var stringHash (hash))
(each item arr
(if (has-key? stringHash item)
do((set stringHash item (+ 1 (get stringHash item )) ))
(set stringHash item 1)
)
(console.log "adding" item)
)
)
currently caller is identical to arrayToHash
which doesn’t seem like what you want
I think I got it
I pass in a hash var e.g. by reference
the do needs to be inside of parens. everything is s-expressions
and when i call it I can get the elements in sh
(def ath (arr sh)
(each item arr
(if (has-key? sh item) do
(set sh item (+ 1 (get sh item )) )
(set sh item 1))
(console.log "adding" item)))
remove the do
or put it inside the parens, like (do (set sh item (+ 1 (get sh item))))
(def ath (arr sh)
(each item arr
(set sh item (+ 1 (if (has-key? sh item) (get sh item) 0)))))
so if you want multiple statements in the body of one of those conditions, you need a
do
and also https://sibilant.org/#jumpNav-8
in circumstances when there’s no
else block, when is preferable, because (when condition (a) (b) (c)) is identical to (if condition (do (a) (b) (c)))
Second: that
do should be removed
while evaluates any number of expressions in the body https://docs.sibilant.org/while
third: based on the indentation, it seems like you intend to close the while after
(get taskObject current), in which case you need an additional closing paren
(def ordered-task (task task-object)
(var ordered-tasks []) ;creates a new list
(var current (first task)) ;tasks first element from task
(while (has-key? task-object current) ;while current is a key in taskObject
(.unshift ordered-tasks (get task-object current)) ;get the object value, add to orderedTasks
(assign current (get task-object current))) ;update current to last object value until current is not a key
(each t task
(.push ordered-tasks t)) ;add the tasks to the end of the orderedTask array
orderedTasks) ;return orderedTasks
that compiles to:
var orderedTask = (function orderedTask$(task, taskObject) {
/* ordered-task sibilant.sibilant:1:0 */
var orderedTasks = [];
var current = task[0];
(function() {
var while$1 = undefined;
while (taskObject.hasOwnProperty(current)) {
while$1 = (function() {
orderedTasks.unshift(taskObject[current]);
return current = taskObject[current];
}).call(this);
};
return while$1;
}).call(this);
task.forEach((function(t) {
/* sibilant.sibilant:7:11 */
return orderedTasks.push(t);
}));
return orderedTasks;
});
on a closer read, i think you want to assign to current
however, in general, this sort of imperative code doesn’t feel very natural in sibilant, and generally i’d look for a way to do this with something like a map or reduce
so for example
(.map [1 2 3] (#(item) (+ 1 item)))
or even more concisely:
(.map [1 2 3] (#-> (+ 1)))
Hi all! I'm having what I think is a syntax error in my recursive function. When I run it I get a 'dft is not a function' error. Any thoughts welcome!
(def dft (map, subset, path, visited)
(each item subset
(if (excludes? visited item)
(do
(.push visited item)
(dft(map (get map item) path done))
(.push path item)
)
)
)
path
)