bcq028

fix(reactivity): enable trigger when use str to set length of arr

2

js allows use string to set length of array. The original code uses an implicit conversion that requires newValue to be a number as key's type is string. If newValue...

in matrix.h, return matrix &, however in vector.h ```cpp template vector operator op (vector& a, const vector& b) \ { a.x op b.x; a.y op b.y; a.z op b.z; return...