Choose efficient algorithms and data structures to avoid unnecessary computational complexity. Replace manual loops with optimized library functions, select appropriate containers based on access patterns, and use direct conversion paths when possible.

Key optimizations to consider:

Example of string comparison optimization:

bool operator==(const String &other) const {
    if (this_size != other_size) return false;
    
    const char *this_data = GetData();
    const char *other_data = other.GetData();
    
    // Short-circuit if same pointer
    if (this_data == other_data) return true;
    
    // Use optimized library function
    return memcmp(this_data, other_data, this_size) == 0;
}

Always profile performance-critical code paths and prefer established algorithms over custom implementations when equivalent functionality exists.