VishDev12

firstThis (data, callBack){
  data = 1
  callBack (data)
  }
  
firstThis (x, anyFunction);  

VishDev12

download1 (imgPath, processImage, uploadImage); //processImage and uploadImage are callback functions
download2 (txtPath, processText, uploadText); //processText and uploadText are callback functions

VishDev12

image = download (imagePath);
processedImage = process (image);
upload (processedImage);

text = download (textPath);
processedText = process (text);
upload (processedText);