1. December 2012

Common mistake when creating new git repo. Error: src refspec master does not match any.

Creating new git repo and pushing it to remote server is fairly easy.

mkdir my-project
cd my-project
git init

You can work with project localy. When you want to push it to remote server, then it is necessary to add remote repo url.

git remote add origin <MY-URL>

Now you can push it:

git push -u origin master

When it works. Hooray. Sometimes you may find following error:

error: src refspec master does not match any.
error: failed to push some refs to '<MY-URL>'

The reason why this happens is not that obvious. :-)

Git creates master branch only after commit to your local repo. If you just initialize repo then there is no master. How to fix it?

Just add and commit at least one change to your repo and re-run push command. You can add e.g. .gitignore.

You can find more info at StackOverflow.

22. December 2011

How to disable stealing of focus by Console in Eclipse

There is one very annoying issue in Eclipse: stealing of focus by Console window.

Console window is displayed when you run application.

When you set focus to some other window like Search results and application prints something on output then Eclipse will automatically switch to Console window. Your search results are gone.

There is simple way how to get rid of such a behavior.

Go to Window -> Preferences -> Run/Debug -> Console. Uncheck options:

  • Show when program writes to standard out
  • Show when program writes to standard error

20. November 2011

Unexpected token ILLEGAL in jQuery.i18n.properties

jQuery.i18n.properties is useful library based on jQuery. You can use it to load .properties files with localization to web application.

I made upgrade of jQuery in my application from version 1.6.2 and application failed with error:

Uncaught SyntaxError: Unexpected token ILLEGAL

I spent some time debugging jQuery and i18n and I found out that one of .properties file contains weird property with name:

1_guide=1 guide

Problem was in numeric prefix. Solution is quite easy: fix property.

one_guide=1 guide

This problem occurs when you upgrade jQuery to 1.6.3 and higher.

7. March 2011

Spaghetti, lasagna and raviolli code

Code smells or anti-patterns are a common classification of source code quality. There is also classification based on food which you can find on Wikipedia.

Spaghetti code

Spaghetti code is a pejorative term for source code that has a complex and tangled control structure, especially one using many GOTOs, exceptions, threads, or other “unstructured” branching constructs. It is named such because program flow tends to look like a bowl of spaghetti, i.e. twisted and tangled. Spaghetti code can be caused by several factors, including inexperienced programmers and a complex program which has been continuously modified over a long life cycle. Structured programming greatly decreased the incidence of spaghetti code.

Ravioli code

Ravioli code is a type of computer program structure, characterized by a number of small and (ideally) loosely-coupled software components. The term is in comparison with spaghetti code, comparing program structure to pasta; with ravioli (small pasta pouches containing cheese, meat, or vegetables) being analogous to objects (which ideally are encapsulated modules consisting of both code and data).

Lasagna code

Lasagna code is a type of program structure, characterized by several well-defined and separable layers, where each layer of code accesses services in the layers below through well-defined interfaces. The term is in comparison with spaghetti code, comparing program structure to pasta.

Spaghetti with meatballs

The term “spaghetti with meatballs” is a pejorative term used in computer science to describe loosely constructed object-oriented programming (OOP) that remains dependent on procedural code. It may be the result of a system whose development has transitioned over a long life-cycle, language constraints, micro-optimization theatre, or a lack of coherent coding standards.

Do you know about other interesting source code classification?

26. January 2011

IntelliJ Idea – Windows – Git – The remote end hung up

I was trying to clone git repository. I had brand new Windows with Cygwin version of git. Intellij Idea displayed nice helpful error message:

fatal: The remote end hung up unexpectedly

I found article at grublesmurf.org that pointed me to solution.

Problem was that Cygwin was using directory c:\cygwin\home\georgik\.ssh, but Intellij Idea was trying to read c:\Users\georgik\.ssh. I moved .ssh directory to c:\Users\georgik and set HOME variable to %USERPROFILE%.It is also worthy to modify /etc/passwd in cygwin to match that directory.