Motoko convert(Text("123")) to Nat or Int 123?

[goose]

Text can covert to Nat or Int?

[goose]

I implement it through the following code：

   public func textToNat( txt : Text) : Nat {
        assert(txt.size() > 0);
        let chars = txt.chars();

        var num : Nat = 0;
        for (v in chars){
            let charToNum = Nat32.toNat(Char.toNat32(v)-48);
            assert(charToNum >= 0 and charToNum <= 9);
            num := num * 10 +  charToNum;          
        };

        num;
    };

[gladguy]

@goose

   public func textToNat( txt : Text) : Nat {
        assert(txt.size() > 0);
        let chars = txt.chars();

        var num : Nat = 0;
        for (v in chars){
            let charToNum = Nat32.toNat(Char.toNat32(v)-48);
            assert(charToNum >= 0 and charToNum <= 9);
            num := num * 10 +  charToNum;          
        };

        num;
    };

Awesome! wonderful! You saved my day

[krunalshoppiko]

can we convert in to Nat32? have you any example?

[skilesare]

You should just be able to do Nat32.fromNat(result of above function).

[krunalshoppiko]

Thanks skilesare it works.

[Harsh]

To add to the other answers here, the ideal return type for such a function is ?Nat in case the Text input ends up being incompatible with Nat (null).