Once upon a time an engineer with years of experience encounter something so basic he doesn’t understand why he didn’t encounter it sooner. This week we had a strange error in our log stating that should have a null values in a map. After some digging in the service where that log was found, it […]
Perenial Seller: The Art of Making and Marketing Work that Lasts I’m subscribed to Ryan Holiday newsletter and read is latest work on stoic philosophy (Obstacle if the way, Ego is the Enemy, Daily stoic) and when he usually get a book out I buy it. In his book, Perenial Seller, we study on what […]
No drama discipline A another parenting book, I’ve read 3 of those in 2017 alone it’s from the same author of the Whole brain child. Learning to help your child to use their upstairs brain when they are overwhelm in their downstairs brain (emotion). Connect with your child first before trying to do discipline. See […]
My coworker was moving files around in our SVN repo and we end up losing the history of the file. It seem it was because of our IDE (eclipse svn at the time), after some searching we manage to find a way to do it by using the svn command rename & move. Doing everything […]
While trying to remove a element after creating a List from a array using the Array.asList(array[]) method I’ve stumbled on that error. java.lang.UnsupportedOperationException at java.util.AbstractList.add(AbstractList.java:131) at java.util.AbstractList.add(AbstractList.java:91) Then I remember this, list created by the Arrays.asList method are immutable Same goes for empty lists. So instead create a arraylist : List<String> list = new ArrayList<String>(Arrays.asList(split));
Our build server (jenkins) had that error BUILD FAILED com.jcraft.jsch.JSchException: java.net.NoRouteToHostException: No route to host Full stack trace below if you really need it. I assume there was a problem with where Jenkins was deploying the apps or at a issue trying to run integration test on the remote server. After talking to IT […]
Comparing and sorting Strings might not work out like you expected specially when your dealing with a language other than English. Normally comparing strings in done with simple Unicode ordering. If you want to have localized ordering (the kind expected by an end user) you need to use a Collator. Commonly used String methods such […]
My god sometime I bang my head on the wall to do something simple on oracle. So oracle don’t support limit so to do something simple has : SELECT f_name, l_name, age from employee_data ORDER BY age DESC LIMIT 20 become : SELECT f_name, l_name, age FROM ( SELECT f_name, l_name, age, ROWNUM r FROM […]
I was trying to update a table that using sql join but I kept getting ORA-00933 I tried the following: Using A SQL JOIN In A SQL UPDATE Statement Using A SQL JOIN In A SQL UPDATE Statement (www.bennadel.com) update table using inner join (venushuynh.wordpress.com) but I kept getting the ORA-00933 then tried this Oracle […]
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