I recently had occasion to extract XML messages with a specific id from log files, resulting in the following gnarly awk snippet. The sed statement at the end is for stripping out some unwanted debug statements. There must be a better way to do this, let me know in the comments (except don’t, because they […]
A cheat sheet for my frequently used/forgotten Java Collections snippets.
private Collection<Apple> convert(final Collection<Orange> values) { final Collection<Apple> converted = CollectionUtils.collect(values, new Transformer(){ public Object transform(final Object target){ Orange result = null; if(target != null){ result = new Apple(target.getName()); } return result; } }); return converted; }
private List<Vegetable> getVegetablesLike(List<Vegetable> allVegetables, final Vegetable vegetable) { return (List<Vegetable>) select(allVegetables, new Predicate() { @Override public boolean evaluate(Object o) { Vegetable other = (Vegetable) o; return other.equals(vegetable); } }); }
Something I seem to need a lot. function calculate(form, id) { a = form.q1.value; b = form.q2.value; switch(id) { case 1: total = (a / 100) * b; //What is a percent of b? break; case 2: total = (a / b) * 100; //a is what percent of b? break; case 3: total = […]
Non-greedy //E.g. blahblah [GBP 200.0000] blahblah private String getValues(String values) { String patternStr = “\\[(.+?)\\]”; Pattern pattern = Pattern.compile(patternStr); Matcher matcher = pattern.matcher(values); boolean matchFound = matcher.find(); String groupStr = null; if (matchFound) { groupStr = matcher.group(0); } return groupStr; //Returns [GBP 200.0000] }