How could I store only one number from a stream of numbers? I mean the situation as follows:

...
|
[random 10]
|
|3\ (next is 4, 7, 2... etc)
|
[ ] what should be in this place?
|
|3\

And what may I do to store only one from next numbers (so only the second, only the third... etc)?

[spigot] -- open it when you want to save a number
[f] -- send to the right inlet to store, bang left inlet to recall

but maybe you want to use a

Thanks for advices. I've tried a bit and I've invented something like this:

|number\
| \
| |o|
| |
| |t
| /
| |0( [loadbang]
| / |
spigot --------|1(
|
|
|
|number\

I have to store only one- the first one- number from changing very fast stream of numbers so I think it could be a good solution.

You might want to clean it up to something more like this:

[number\
|
[t b f]
\ /
X
/ \
/ [0(
| \
[spigot 1]
|
[number\ <--or [f] if you don't actually need to see this.

You'll want the [t b f] to ensure the correct execution order; otherwise, it is determined by the order you connect them. This is good practice to avoid problems when you need to debug a problem later. Also, the |o|, which I assume is a [bng], is unnecessary and in this case is only wasting cpu on gui. And, giving [spigot] an argument of 1 will default it to open, so you won't need the [loadbang].

Maybe I'm being a little nitpicky, but clean and efficient patching will help you in the long run.

Thank you very much!