Apr 18

[Scheme] Scheme – examples – 3 sorting algorithms + depth of tree

Scheme , , Add Comment (4)

Here are my 3 basic sorting algorithms written in Scheme: Read More


Apr 18

[Linux] How to execute SQL query on Firefox history

Linux, SQL, Ubuntu , , , Add Comment (0)

1. If you don’t know anything about SQLite, please read:

http://en.wikipedia.org/wiki/SQLite

2. Install sqlitebrowser:

sudo apt-get install sqlitebrowser

3. Run sqlitebrowser
4. Open file:
/home/your username/.mozilla/firefox/your profile/places.sqlite
It’s a SQLite database where firefox stores information about history.
5. Execute following command:

SELECT url FROM moz_places WHERE url LIKE "%wojtekrj.net%"

6. You should have list of all vistied by you pages from my blog.


Apr 18

[Linux] How to check if program has memory leaks

C++, Linux , Add Comment (1)

You can check your program using command:

valgrind your_program

Example of usage:
We have following C++ program (tst.cpp):

int main() {
	int * tab = new int[1000000];
	return 0;
}

Obviously it generates memory leak. We compile it to tst file and execute:

valgrind tst

Read More


Apr 18

[Scheme] Useful links

Scheme Add Comment (0)

Here are some useful links about Scheme programming language:
in English
http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme-Z-H-1.html
http://www.r6rs.org/final/html/r6rs/r6rs-Z-H-2.html
and in Polish:
http://wazniak.mimuw.edu.pl/index.php?title=Programowanie_funkcyjne/Scheme
http://www.ds5.agh.edu.pl/~kubek2k/papers/gimp-scheme/scheme.html


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