LEDS.show(); or FastLED.show();

Other Hardware LEDs and Multiplexing
1

LEDS.show(); or FastLED.show();
What's the difference?

2

What is the context ?
Where have you seen these commands, particularly the first one ?

3

Is LEDS.show() for the AdaFruit NeoPixel library, or does that also with FastLED? If so, what is "LEDS" in this context? Can you post a short, working FastLED sketch demonstrating it?

4

I have been looking at dozens of samples to try to understand what I am doing in fastLED. I really can't recall where I found LEDS.show(), but it appears to work the same as fastLED.show.

/*
  Sketch to learn fastLED
*/

#include <FastLED.h>

#define NUM_LEDS 26        // Add one for LED0
#define DATA_PIN D1
#define BRIGHTNESS 20
#define LED_TYPE WS2811
#define COLOR_ORDER RGB

// Set up the block of memory that will be used for storing and manipulating the led data:
// This is an array of leds.  One item for each led in your strip.
CRGB leds[NUM_LEDS];

#define sceneDelay 2000   // Delay between scenes
#define pixelDelay 10     // Delay between pixels


// =========================== setup() ===========================
// Set up the leds and tell the controller about them
void setup() {
  Serial.begin(115200);
  Serial.println();

  // sanity check delay - allows reprogramming if accidently blowing power w/leds
  delay(2000);

  // This tells the library that there's a strand of LED_TYPE on pin DATA_PIN,
  // and those leds will use the led array leds, and there are NUM_LEDS of them.
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(BRIGHTNESS);


  rbgLed();

}


// =================== loop() ===================
void loop() {
}


// =========================== rbgLed() ===========================
void rbgLed() {
  // Every three LEDs is RGB.
  int ledNum = 0;
  while (ledNum < NUM_LEDS) {
    leds[ledNum++] = CRGB::Red;
    LEDS.show();
    //FastLED.show();
    delay(pixelDelay);
    leds[ledNum++] = CRGB::Green;
    LEDS.show();
    //FastLED.show();
    delay(pixelDelay);
    leds[ledNum++] = CRGB::Blue;
    LEDS.show();
    //FastLED.show();
    delay(pixelDelay);
  }
}