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Accessing values of dictionary not by Key
Imagine we have a dictionary<string , int> and we want to manipulate values of this dictionary. As far as i know, we can access value only by its key. But i think it is inefficient because we must add a couple of line to do that. Is there another solution. For example in array we can access elements and modify them by index. Is there a similar solution to change values in dictionary? Thank you a lot guy.
7 Respuestas
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The solution can be i.e.:
foreach (var a in coffee.Keys.ToArray()){
coffee[a]-=discount;
Console.WriteLine(coffee[a]);
}
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What do you see here inefficient:
foreach (string s in d.Keys)
Console.WriteLine(s + ": " + d[s]);
Otherwise you can use generic collections depending of needed application.
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Thank you a lot JaScript .
The best for you.
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What do you mean with
var a?
Please link your attempt first here then can be seen to help you.
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https://code.sololearn.com/cEo3BQKUFuVs/?ref=app
Note:i dont want directly use keys of dictionary.
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foreach (var a in coffee.Keys){
coffee[a]-=discount;
}
coffee is a dictionary. The above code results in exception. discount and values of coffee are integer type.
JaScript : you mention using generic collection . How can i do the same job using collection?
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Mohammad Reza Morawej You are welcome.