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fletch_to_99

Mon Apr 23, 2012 12:52 pm


String contains another string e.x.(This string blah ... contains ... This)

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What is it you are trying to achieve?
Check if a string contains another string. 

What is the problem you are having?
No method or function for it? Looking for a function that returns true if it contains the string otherwise false (such as in java "blahblahblah".contains("test") would return false but "lol".contains("lol") would return true)

Describe what you have tried to solve this problem
Searching for a function for this, non found. Currently using exact matches but thats not what I want.

Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)
Currently uses exact matches however that is not the best way for this to be achieved.

    proc search (criteria : string, students : array 1 .. * of Assignment)
        var found : boolean := false
        for i : 1 .. upper (students)
            if students (i).Name = criteria then
                found := true
                put "-------------------------"
                put "Name: ", students (i).Name
                put "Grade: ", students (i).Grade
                put "Mark: ", students (i).Mark
                put "-------------------------"
            end if
        end for
        if found then
            return
        end if
        put "No student found!"
    end search


Please specify what version of Turing you are using
Latest Stable (4.1.1)


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Raknarg

Mon Apr 23, 2012 1:22 pm


RE:String contains another string e.x.(This string blah ... contains ... This)

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Theres a thing called index. For example:

index ("Hello", "e") results a 2

index ("My name is George", "name") results 4

index ("ABCDEF", "Z") results a 0

It tells you where a pattern is. If it's not there, it results a 0.


Also, if you are going to make your own, a function would make more sense.


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evildaddy911

Mon Apr 23, 2012 4:19 pm


Re: String contains another string e.x.(This string blah ... contains ... This)

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if found then 
            return 
        end if

in turing, you use "result", and it has to be in a function, not a procedure. as for writing your own function, essentially, justdo exactly what raknarg says index does: If it's not there, it results a 0. (or a boolean)


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Raknarg

Tue Apr 24, 2012 11:41 am


RE:String contains another string e.x.(This string blah ... contains ... This)

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Or, he could just use the built-in index function.
Also, he can use return when using a procedure, thanks for that, I didn't know. When you use return, it completely exits the procedure, no matter where it is. That's useful if you're trying to return multiple values.