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Thread: Ternary operator

  1. #1
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    Default Ternary operator

    Hi

    Please can someone help me to translate this ternary operation:
     
      return  ( ( ayr[7] >> ch   | tons >> ch )
              & ( ayr[7] >> ch+3 | noiv       )
              & 1 )  * amp[ ayr[8+ch] & 0x10
                       ? envv
                       : ayr[8+ch] & 0x0f ];

    in to IF and ELSE statement?

    Thank's.


  2. #2
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    Default Re: Ternary operator

    Put what is before the ? into the if condition
    put what is between the ? and the : in the true part
    put what is after the : into the else part

    each section will return its value.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Ternary operator

    Normally i do this.
    But in this case, the blacket opened after amp is closed after : , at the end of expression
    That confused me...

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    Default Re: Ternary operator

    I didn't try to compile the code to see if it had syntax errors. Does the posted code compile ok?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Ternary operator

    Sorry i can not compile because i'm translating the source to another language (Purebasic).
    This is the complete function:
     
    function cstep(ch) {
      if( ++ayr[ch+16] >= (ayr[ch<<1] | ayr[1|ch<<1]<<8) )
        ayr[ch+16]= 0,
        tons^= 1 << ch;
      return  ( ( ayr[7] >> ch   | tons >> ch )
              & ( ayr[7] >> ch+3 | noiv       )
              & 1 )  * amp[ ayr[8+ch] & 0x10
                       ? envv
                       : ayr[8+ch] & 0x0f ];

  6. #6
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    Default Re: Ternary operator

    That must be javascript. function is not a keyword in java.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Ternary operator

    Ah...ok.
    Thank you.

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    Default Re: Ternary operator

    if (ayr[8+ch] & 0x10) 
        return ((ayr[7] >> ch | tons >> ch) & (ayr[7] >> ch+3 | noiv) & 1) * amp[envv];
    else
        return ((ayr[7] >> ch | tons >> ch) & (ayr[7] >> ch+3 | noiv) & 1) * amp[ayr[8+ch] & 0x0f ];

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    Default Re: Ternary operator

    Thank you!

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