Monthly Archives: March 2013

Setup Codelite to work with visual studio toolset

Posted on March 26, 2013 by news

I am tired to upload figures , I just give it as PDF file with figures inside Setup Codelite to work with visual studio toolset (totorial version)

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python pinyin module support simplified and traditional chinese codecs

Posted on March 26, 2013 by news

git clone https://github.com/qingfengxia/pinyin.py.git

Pinyin python module

Origin:      Author:cleverdeng      E-mail:clverdeng@gmail.com (not reachable)

forked by Qingfeng Xia based on v0.9:  
               (1)renamed class name from PinYin to Pinyin, 
               (2)dict file "word.data"  is  renamed  as "pinyin.data" 
               (3) add encoding support, or it will not work for windows cmd prompt! 
               (4) move load_word() (renamed as loaddict() ) into __init__(), to make API concise
               (5) word.data  "ord(UNICODE)= list of pinyin", for quick loading and human readable check
                  why some unicode has multiple pinyin units??? 

installation: 
               copy the two files:  pinyin.py, pinyin.data , into your project folder, or under $PYTHONPATH , or your sitepackages

test:   testing code is under __main__ section
               python -m pinyin.py

<!--more-->
suggested new features: 
                  (1)  traditional chinese support:    done!
                  (2)  repr()   print the tones, print in two lines,  first line using ASCII char as tone -- / \ V
                  (3)  other  pinyin romanization styles:  Yale, Wade-Giles, etc, using pinyin4j 's pinyindb
                  (4) consider python 3.x support: by replace print with print_function  for test()
                  (5) performance improvement, using better container than dict

see also: 
    (1) ruby    "Ruby module:  hanzi_to_pinyin" 
          java  pinyin4j:   supports  6 pinyin resprensation styles:  Yale, Wade-Giles, etc
    (2) ibus-pinyin: phrase 
    (3) oopinyinguide: openoffice 3.x extension
    (4) Unicode for  greater Chinese charset: CJKV:  4E00-9FFF,  
          this pinyin.data (0x3400-9F2D) and (0x20000-0x2B6F8)

example:
from pinyin import Pinyin
def test_console(encoding='cp936'):
    import os
    if os.name=='nt':
        print "POSIX os input encoding is utf-8, for windows try cp936/gbk for simplified"
        test2=Pinyin(encoding=encoding)
        print "str(test.hanzi2pinyin(string)"
        s=raw_input("input hanzi string in windows console") # only for python 2.x
        print "pinyin for input hanzi are:"
        print test2.hanzi2pinyin(s)

if __name__ == "__main__":
    test = Pinyin()
    #
    print "test with utf8 console encoding"
    string = "钓鱼岛是中国的"  #utf8  simplified chinese
    print "in: %s" % string
    print "out: %s" % str(test.hanzi2pinyin(string, showingtone=True))
    print "out: %s" % test.hanzi2pinyin_split(string, split="-")
    #
    str2="釣魚島是台灣的也是中國的" #utf8 traditional chinese
    print "in: %s" % str2
    print "out: %s" % str(test.hanzi2pinyin(str2, showingtone=True))
    #test()

Pinyin python module

Origin: Author:cleverdeng E-mail:clverdeng@gmail.com (not reachable)

forked by Qingfeng Xia based on v0.9:

(1)renamed class name from PinYin to Pinyin,

(2)dict file "word.data" is renamed as "pinyin.data"

(3) add encoding support, or it will not work for windows cmd prompt!

(4) move load_word() (renamed as loaddict() ) into __init__(), to make API concise

(5) word.data "ord(UNICODE)= list of pinyin", for quick loading and human readable check

why some unicode has multiple pinyin units???

installation:

copy the two files: pinyin.py, pinyin.data , into your project folder, or under $PYTHONPATH , or your sitepackages

test: testing code is under __main__ section

python -m pinyin.py

Comparsion of DateTime classes in popular programming Languages (2)

Posted on March 24, 2013 by news

as a further explanation to: ” Comparsion of DateTime classes in popular programming Languages (1)” This part is a copy and paste of lang/lib spec.

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Comparsion of DateTime classes in popular programming Languages (1)

Posted on March 24, 2013 by news

C boost::Datetime Java JDK8(javax.time) Qt Python and Javascript (1) Table comparison (2) Further explanation from each language spec Joda package for (Java) is not described here, whose API is analoguous to Qt and Python. As there is new API … Continue reading →

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You must know C++11, but have you noticed C11?

Posted on March 23, 2013 by news

Previous C++ standard is C++03 (2003); previous C std is C99.They are not released together, but they did this time as a combo of C11 and C++11. __STDC_VERSION__ == 201112L C11 (formerly C1X) is an informal name for ISO/IEC 9899:2011 (see wiki) … Continue reading →

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Four wheel car robot based on Arduino Mega2560 and Raspberry Pi

Posted on March 23, 2013 by news

git clone https://github.com/qingfengxia/arduinorobotcar.git Datasheets (most of them in Chinedse) for robot parts makes the git size big ========================================= Recently, I have been working on Arduino 2/4 wheel car robot in my spare time. ===============design goals================== Robot car composing 4 DCMotors, … Continue reading →

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Melexis90620 IR sensor controlled by Arduino and Raspberry Pi

Posted on March 23, 2013 by news

I have made a C++ library class for Melexis90620 (in order to use multiple sensors simultanuously ), a test program to demo this class, python program to show the contour. Also, I made I2C C program to control itby Raspberry … Continue reading →

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my robotics lab is ready to go

Posted on March 6, 2013 by news

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QtCore vs C++ STL & boost lib (4) smart pointers

Posted on March 6, 2013 by news

see “Count with me: how many smart pointer classes does Qt have?” http://blog.qt.digia.com/blog/2009/08/25/count-with-me-how-many-smart-pointer-classes-does-qt-have/ Smart pointers Introduction Ver QPointer<T> Qt Object , guarded pointer, set NULL after delete/deconstruction However, pointed resource not released Qt4.0 QSharedPointer reference-counted strong sharing of pointers Qt4.5 … Continue reading →

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QtCore vs C++ STL & boost lib (3) Threading

Posted on March 6, 2013 by news

Threading is always tricky, I dare not comment on this topics. If some useful articles are found, this page will be updated!

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QtCore vs C++ STL & boost lib (2) Container

Posted on March 6, 2013 by news

just read the article: < Understand the Qt containers > http://marcmutz.wordpress.com/effective-qt/containers/ key points (1) difference: a)Qt Containers: implicitly shared (Copy-On-Write) ! b) size type: QT return signed int, while STL return size_t (unsigned int) c) Iterator (2)Qt has C++ STL … Continue reading →

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QtCore vs C++ STL & boost lib (1) IO

Posted on March 6, 2013 by news

QFile is the class for everyday File IO, while C++ STL using stream ===========based class: std::stream ========= <iostream> (qDebug() or #include <iostream> cin/cout ) <fstream> (QFile) <sstream> (QBuffer) <boost/archive> ( QDataStream for serialization ) ===========QIODevice=========== The QIODevice class is the … Continue reading →

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QtCore vs C++ STL & boost lib: overview

Posted on March 6, 2013 by news

QtCore vs C++ STL & boost lib Author: Qingfeng Xia Date: March 05 2013 Copyright: since most of the content is from documentation or forum threads, it can be regards as same license as QT documentation. Most of text are … Continue reading →

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Solution to SPI and I2C LCD unmeaningful character display

Posted on March 4, 2013 by news

Arduino IDE has its standard “LiquidCrystall” library, but MCP23008 1602 LCD needed a customed library. Simply installation may lead to unexpected result Arduino ide 1.5 , Arduino mega 2560, scl(clk 21) sda(20 DAT) connection is fine, but example “HelloWorld_i2c”, compiled sucessfully, but it does not give correct character display, … Continue reading →

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Monthly Archives: March 2013

Setup Codelite to work with visual studio toolset

python pinyin module support simplified and traditional chinese codecs

Comparsion of DateTime classes in popular programming Languages (2)

Comparsion of DateTime classes in popular programming Languages (1)

You must know C++11, but have you noticed C11?

Four wheel car robot based on Arduino Mega2560 and Raspberry Pi

Melexis90620 IR sensor controlled by Arduino and Raspberry Pi

my robotics lab is ready to go

QtCore vs C++ STL & boost lib (4) smart pointers

QtCore vs C++ STL & boost lib (3) Threading

QtCore vs C++ STL & boost lib (2) Container

QtCore vs C++ STL & boost lib (1) IO

QtCore vs C++ STL & boost lib: overview

Solution to SPI and I2C LCD unmeaningful character display

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