This example belongs to Eclipse JDT Tutorial Series. Normally, Eclipse JDT is used in a plug-in environment. This is the normal situation in which we deal with each project in the workspace. However, if we want to parse a large amount of java file, this approach may not be good, since it is not easy … Read more
What if we have a black box which can accept input of anything and just produce results of what we need. If this become true some day, of course, here might be the origin of the idea. 😉
If you want to exclude a certain word/string in a search pattern, a good way to do this is regular expression assertion function. It is indispensable if you want to match something not followed by something else. A Simple Example String str = "programcreek"; Pattern p = Pattern.compile(".*program(?=creek).*"); Matcher m = p.matcher(str); if(m.matches()){ System.out.println("Match!"); … Read more
Can we have a function that can add two list to one, such as (add ‘(1 2 3) ‘(4 5 6)) = (5 7 9)
(defun add-two-list (l r) ; e.g. (1 2 3) (2 3 4) ; returns (3 5 7) (setf return-value '()) (loop for i from 0 to (- (length l) 1) do (setf return-value (cons (+ (nth i l) (nth i r)) return-value)) ) (reverse return-value) ) |
Just add h after begin tag. As simple as it is. H here means Place the float here, i.e., at the same point it occurs in the source text. begin{table}[h] center begin{tabular}{|l|l|} hline multicolumn{2}{|c|}{Schedule of This Week} hline Monday & SigNEW Tuesday & Artificial Intelligence, Compiler Wednesday & Research Meeting Thursday & Artificial Intelligence, … Read more
Adding vertical scroll bar to a text area in RCP is straightforward. You should use SWT static field value to set the style. Text text = new Text(top, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);Text text = new Text(top, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER); * This answer is from the book “Eclipse Rich Client Platform 2nd” which … Read more
File chooser or Directory choose is a common module when file processing is involved in a GUI application. This article use an example to illustrate how to use file chooser/directory chooser under Eclipse RCP, and gives the source code which can be used directly. Under Eclipse RCP, the implementation is simple and the usage is … Read more
To keep the unique value of a large data set, Set would be a good option. Every element in a set is unique, when a duplicate element is added, it is ignored. Here is a sample code from oracle. public class FindDups2 { public static void main(String[] args) { Set<String> uniques = new HashSet<String>(); Set<String> … Read more
How can we find the minimum element in a list in Lisp? Given a large number m as an argument, get a minimum value from a list. The following code returns the minimum element in a list. (defun get-min (m l) ; takes a list ; return the minimum value (cond ((null (car l)) m) … Read more
If you have a file with come words or terms on each line, you may want to sort it. Java Arrays.sort is common nice function to do this. Collections.sort() is another nice say. Here is an example and code.
E.G. in a file, you have the following txt.
dog cat --windows --kankan pps game --annot be guaranteed as it is, generally speaking, --impossible to make any hard gu arantees in the p --resence of unsynchr |
Software Maintenance is an important subarea of Software Engineering. Researches in this area have produced a lot of amazing discoveries which are being used in software industry. Not just in the software industry, but many web applications that are SEO-optimised (through vendors like spamzilla.io) make use of this area of software engineering. Why the maintenance part is so important and so hard? There may be a bunch of answers for this question, such as requirement analysis problem, design problem, each programmer’s programming style, etc.
An interesting lisp program. It calculates postfix operations. See if you have better solutions.
Eclipse platform is built on OSGi framework. Eclipse Plugin framework is pretty complex. However, the general ideas behind is very simple. In this post, the simple idea of how a plugin works is explained by using a diagram. Then a simple Eclipse Plugin is created to explain how to add a menu item to menu … Read more
While programming for a small project under Eclipse IDE, I got the following error message: java.lang.UnsupportedClassVersionError: Bad version number in .class file The problem is the compilation JRE and running JRE are not the same. So we need to make them the same version, e.g. 1.6. There also might be the JRE library in your … Read more