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Parse microseconds in Java

SimpleDateFormat in java does not support microseconds. It supports down to milliseconds only. In some cases, we want to parse Time from s...
Convert byte size into human readable format in Java ( and GWT )

Java: public static String humanReadableByteCount(long bytes, boolean si) { int unit = si ? 1000 : 1024; if (bytes < unit) retur...
GWT: JSNI function to validate URL

public native boolean isValidUrl(String url) /*-{ var pattern = /(http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%...
JSNI function in GWT to format numbers

public class NumberUtil { public static native String toFixed(double d, int fixed)/*-{ return d.toFixed(fixed); }-*/; public stati...
DICOM Value Representations

VR Definition Details AE Application Entity A string of characters with leading and trailing spaces (20H) being non-significant. ...
Java: use signed types to store unsigned values

short , int , long are always signed in Java. However, it only matters if you are doing math with it. Otherwise, you can store unsigned val...
GWT Developers Plugin for Firefox 10

https://dl.google.com/dl/gwt/plugins/firefox/1.0.10862/gwt-dev-plugin.xpi
Calculate MD5 hash

On Mac OS X md5 -s "string" On Linux echo -n "string" | md5sum Use the online MD5 calculator: http://www.adamek.biz/...
CSS border tricks

http://www.sohtanaka.com/web-design/css-border-tricks-tutorial/
HEX mode in VIM

Enter hex edit mode: %!xxd Exit hex edit mode: %!xxd -r

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