About
My name is Christopher Bojarski. I'm a web developer, programmer and blogger. Fan of all things technology related. Avid reader and traveler. Married and living in Philadelphia. Connect with me at cbojar.net.
Break Down Code to Make It DRYer
We are always looking to make our code DRYer. Code that is not repeated is easier to maintain. We can make a change in just one place rather than hunting for different incarnations in many different places. Making code DRYer is not always easy, and sometimes how to remove the duplication is not apparent.
Let's say we have the following two functions:
public List<Stats> processLines(File file) { List<Stats> stats = new ArrayList<>(); for (String line : lines(file)) { Data data = extractDataFrom(line); Stats dataStats = calculateStatsFor(data); stats.add(dataStats); } return stats; } public List<Stats> processLines(List<File> files) { List<Stats> stats = new ArrayList<>(); int fileNumber = 0; for (File file : files) { for (String line : lines(file)) { Data data = extractDataFrom(line, fileNumber); Stats dataStats = calculateStatsFor(data); st…
Let's say we have the following two functions:
public List<Stats> processLines(File file) { List<Stats> stats = new ArrayList<>(); for (String line : lines(file)) { Data data = extractDataFrom(line); Stats dataStats = calculateStatsFor(data); stats.add(dataStats); } return stats; } public List<Stats> processLines(List<File> files) { List<Stats> stats = new ArrayList<>(); int fileNumber = 0; for (File file : files) { for (String line : lines(file)) { Data data = extractDataFrom(line, fileNumber); Stats dataStats = calculateStatsFor(data); st…