(Need help) Code neopixel to fastled

Other Hardware LEDs and Multiplexing
1

hi,
i need help.

i found code effect there i need , name is random position fill color, but it just "void loop'' code, no "void setup" or "header".. and also it for neopixel.

please help me add or create missing codes (void setup and header) and how this will work with fastled.

thank you..

void randomPositionFill(uint32_t c, uint8_t wait) {
  clearStrip();
 
  int used[dstrip.numPixels()]; // array to keep track of lit LEDs
  int lights = 0; // counter
 
  for(int i = 0; i<dstrip.numPixels(); i++){ // fill array with 0
    used[i] = 0;
  }
 
  while(lights<dstrip.numPixels()-1) {
    int j = random(0,dstrip.numPixels()-1); // pick a random LED
    if(used[j] != 1){ // if LED not already lit, proceed
      dstrip.setPixelColor(j, c);
      used[j] = 1; // update array to remember it is lit
      lights++;
      dstrip.show(); // display
      delay(wait);
    }
  }
}
2

Take any example that came with the Neopixel library you want to use.

Add that function call into the loop function.
Add that function to the end of the sketch.
Then change the dstrip in that function to the name your example gave to the LED strip.