An important feature of a map application is the ability of adding/displaying markers on a map. Markers, together with other elements such as labels, poly-lines,polygons, circles, etc. are called overlays […]
In previous tutorial of baidu map api, we’ve learned how to use baidu map api to display a map on web page. That is exiting, but the displayed map seems […]
Here is the official guide of baidu map api to display a map, but it does not work if you copy paste it into your web page. <!DOCTYPE html> <html> […]
Here is a code snippet writing data to a file: QFile outfile(“file.txt”); if (!outfile.open(QIODevice::Append)) { exit(); } QTextStream out(&outfile); out.setCodec(“UTF-8”); for(int i=0;i<100000;i++) { out<<“somedata”; } outfile.close(); If you press the […]
I have problem running a python script developed using python2.7. My python environment is Python2.6.6 under CentOS 6.5. Some code is broken when running in old python version. For example, […]
Python programming under windows has the same headache problem as programming in Linux: you have to install missing dependent packages endlessly. I installed python 2.7 under Windows, and now I […]
I will definitely forget the syntax of jQuery selectors if I do not write jQuery code for some days. So it is better to list them here as a memo. […]
To get the text value of element, you can: use .text() <!DOCTYPE html> <html> <head> <meta charset=utf-8 /> <script src=”jquery.min.js”></script> </head> <body> <div>aa<b>bb</b></div> <div>cc</div> <script> alert($(“div”).text()); </script> </body> </html> This […]
Every object in javascript has a __proto__ property. The value of __proto__ is the prototype property of its construction function, or null if the object is not constructed by a […]
I seldom play with the bells and whistles of Qt gui elements. All I used to do is adding some buttons on a QDialog derived object and connecting them to […]