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java.lang.NoClassDefFoundError: Could not initialize class XXX
...likely the cause of the problem (maybe file can't be found, no permissions etc.).
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How to use sed/grep to extract text between two words?
...n the grep included in *BSD, or the ones that come with any SVR4 (Solaris, etc). In FreeBSD, you can install the devel/pcre port which includes pcregrep, which supports PCRE (and look-ahead/behind). Older versions of OSX used GNU grep, but in OSX Mavericks, -P is derived from FreeBSD's version, whi...
How to get a random number in Ruby
... @banister: wow, I was convinced that the new api (rand with range, bytes, etc...) was available directly through the Random object. rand with range will be in 1.9.3, and I'll make a feature request for bytes. I've edited my answer
– Marc-André Lafortune
Jun 2...
MySQL InnoDB not releasing disk space after deleting data rows from table
...ng for your table like - Unique Keys, Indexes to include partition column etc.
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Add centered text to the middle of a -like line
... answered May 11 '10 at 17:09
Fletcher MooreFletcher Moore
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Android: How to enable/disable option menu item on button click?
... a premium member, if the user signs in, if the user connects to internet, etc.) then it's nice to have it greyed out because then the it lets the user know there is some existing feature they don't have access to for some reason.
– yiati
May 1 '14 at 19:58
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How does one reorder columns in a data frame?
...e present. Because there are no columns with the character names "1", "3", etc. you'll get "undefined columns". list(1,3,"Var1", 2) keeps values without type promotion, but you can't use a list in the above context.
– Terry Brown
Jan 18 '15 at 16:05
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How to simulate a mouse click using JavaScript?
...(to simulate which mouse button you want, whether Shift/Alt/Ctrl are held, etc. The options it accepts are based on the MouseEvents API.
I've tested in Firefox, Safari and Chrome. Internet Explorer might need special treatment, I'm not sure.
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Postgres: SQL to list table foreign keys
...raints are the same. The only option is going for pg_constraints, pg_class etc. using oids to join. Postgres' ANSI catalog is only there for compliance but it's flawed. pg_catalog is the way to go. The correct answer is here dba.stackexchange.com/questions/36979/retrieving-all-pk-and-fk
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iPhone Safari Web App opens links in new window
... working for me on iOS 6.1 and with Bootstrap JS links (i.e dropdown menus etc)
$(document).ready(function(){
if (("standalone" in window.navigator) && window.navigator.standalone) {
// For iOS Apps
$('a').on('click', function(e){
e.preventDefault();
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