To solve the expression \(-(-12) + (+19) - (-12) + 8 - 19\), we need to simplify it step by step:

1. Simplify the double negatives:
- \(-(-12)\) becomes \(+12\)
- \(-(-12)\) becomes \(+12\)

So the expression now looks like this:
\[ 12 + 19 + 12 + 8 - 19 \]

2. Combine the positive numbers:
\[ 12 + 19 + 12 + 8 = 51 \]

3. Subtract the negative number:
\[ 51 - 19 = 32 \]

Therefore, the value of the expression is:
\[ \boxed{32} \]