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Eclipse - java.lang.ClassNotFoundException
... is an eclipse project - maven - git issue. That does not really narrow it down but wiping all the metadata folders (.project, .whatever...), deleting the project and reimporting only as a maven project worked for me. I also found something didn't know eclipse-junit could do: highlighting test metho...
How to move Jenkins from one PC to another
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When I Launched my new jenkins, my nodes are showing down, which is correct. But when I clicked on some node the URLs there are pointing to old jenkins as below: Run from slave command line: javaws old-jenkins-server:8080/computer/slaveMachine1/slave-agent.jnlp Or if the slave...
how to create a Java Date object of midnight today and midnight tomorrow?
...n the Javadoc
For example, truncating with the MINUTES unit will round down to the nearest minute, setting the seconds and nanoseconds to zero.
Hope it helps.
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Connect Java to a MySQL database
...tep by step explanation how to install MySQL and JDBC and how to use it:
Download and install the MySQL server. Just do it the usual way. Remember the port number whenever you've changed it. It's by default 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the conta...
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
...at least quickest) broken.
UPDATE: CAPTCHA Killer's website is now taken down, apparently under legal pressure. See http://captcha.org/ for a complete overview of the topic.
And yeah, OCR is not the best way to break a CAPTCHA protected site - there are many other better ways.
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Algorithm to detect corners of paper sheet in photo
...cont: cv2.contourArea(cont) > 10000, contours)
# simplify contours down to polygons
rects = []
for cont in contours:
rect = cv2.approxPolyDP(cont, 40, True).copy().reshape(-1, 2)
rects.append(rect)
# that's basically it
cv2.drawContours(orig, rects,-1,(0,255,...
Postgres: SQL to list table foreign keys
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Ollyc's answer is good as it is not Postgres-specific, however, it breaks down when the foreign key references more than one column. The following query works for arbitrary number of columns but it relies heavily on Postgres extensions:
select
att2.attname as "child_column",
cl.relname a...
How can I copy the output of a command directly into my clipboard?
...lways wanted to do this and found a nice and easy way of doing it. I wrote down the complete procedure just in case anyone else needs it.
First install a 16 kB program called xclip:
sudo apt-get install xclip
You can then pipe the output into xclip to be copied into the clipboard:
cat file | x...
How do you pass a function as a parameter in C?
... single reference to using a typedef for function pointers? Sorry, have to down-vote.
– Jonathon Reinhart
Oct 1 '14 at 8:03
3
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How do I get the coordinates of a mouse click on a canvas element?
...st canvas = document.querySelector('canvas')
canvas.addEventListener('mousedown', function(e) {
getCursorPosition(canvas, e)
})
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