This is matlab function to calculate sum of A to N power using matrix diagonalization, it assumes that matrix is a square matrix. function [x] = powersum(A, m) % Greg Bugaj % Y = powersum(A, n) gives an sum of matrices to N power, if matrix size % is less than 2 then we simply …
Calculate A to N power matrix using matrix diagonalization. Read More »
Well here is my way on how to handle the ENTER key on the TextBox in asp.net so it execute my method call instead the default form action. I have a textbox and a linkbutton that invokes the search, but I also would like to hook up to that linkbutton when I press ENTER on …
There are many ways to accomplish this but this one does not use any external dependencies like Apache commons. Two common pitfalls that I see are that people forget to flush the ByteArrayOutputStream and they call ‘baos.write(buffer)’ instead of ‘baos.write(buffer, 0, read)’ without actually clearing the buffer, which causes the last write to append previous …
Sometimes its nice to be able to transfer object between request or for flash messages without need for a whole session. Here we will use session as our store mechanism for our flash scope. This concept here can be extended into implementing a ‘Conversation Scope’ but that is a whole different animal. Example Usage @FlashAttribute(TABNAME_ATTRIB) …
Title might be little misleading since in java we pass always by value, but we can mimic passing by reference. /** * This class allows us to pass values by reference ranter than value. * Not directly as java just passes reference of the object by value but indirecly * @author Greg * * @param …
While using HTML Tidy I needed to remove the DOCTYPE prolog to prevent ‘org.xml.sax.SAXParseException: Already seen doctype.’ exception. Regex is quite simple, only catch is that we need to make sure we include the \n\r in our selecton and make it not greedy. convertedData = convertedData.replaceAll("<!DOCTYPE((.|\n|\r)*?)\">", ""); convertedData = convertedData.replaceAll("<!DOCTYPE((.|\n|\r)*?)\">", ""); This will consume multiline …
This is snipper of my ANTLR grammar for parsing expressions with operator precedence, By default the expressions are evaluated left to right which in some cases may produce undesired results, in order to fix that use of left and right parenthesis is required. For example this two expressions will be evaluated differently 3 > 2 …
To work around this error Custom port is not allowed or the host is not registered with this consumer key. Register the app as Desktop/Client application instead of web app.
Simply adding @Transactional on the method will resolve this issue
For cross compatability between sql and mysql servers when we do a division on a aggregated variable like count we need to promote the INT to a DOUBLE type by multiplying it by 1.00 otherwise our results will loose precision Examples 1/2=0 Incorrect Results 1.00/2=.5 or 1.00/2.00=.5 Good For sake of consistency both variables have …
