Added comment about remainder bits in QR symbol in all language versions.

cpp/QrCode.cpp

@@ -358,6 +358,8 @@ void qrcodegen::QrCode::drawCodewords(const std::vector<uint8_t> &data) {
 					modules.at(y).at(x) = ((data.at(i >> 3) >> (7 - (i & 7))) & 1) != 0;
 					i++;
 				}
+				// If there are any remainder bits (0 to 7), they are already
+				// set to 0/false/white when the grid of modules was initialized
 			}
 		}
 	}

java/io/nayuki/qrcodegen/QrCode.java

@@ -514,6 +514,8 @@ public final class QrCode {
 						modules[y][x] = ((data[i >>> 3] >>> (7 - (i & 7))) & 1) != 0;
 						i++;
 					}
+					// If there are any remainder bits (0 to 7), they are already
+					// set to 0/false/white when the grid of modules was initialized
 				}
 			}
 		}

javascript/qrcodegen.js

@@ -415,6 +415,8 @@ var qrcodegen = new function() {
 							modules[y][x] = ((data[i >>> 3] >>> (7 - (i & 7))) & 1) != 0;
 							i++;
 						}
+						// If there are any remainder bits (0 to 7), they are already
+						// set to 0/false/white when the grid of modules was initialized
 					}
 				}
 			}

python/qrcodegen.py

@@ -409,6 +409,8 @@ class QrCode(object):
 					if not self._isfunction[y][x] and i < len(data) * 8:
 						self._modules[y][x] = ((data[i >> 3] >> (7 - (i & 7))) & 1) != 0
 						i += 1
+					# If there are any remainder bits (0 to 7), they are already
+					# set to 0/false/white when the grid of modules was initialized
 		assert i == len(data) * 8