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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...
What is the difference between GitHub and gist?
...e the implementation of a small feature and share it to your blog or write down what you think about the project and share it with your teammates.
Just like what the above answers said, gist is used for more like code snippet thing. So normally if you work on a project you use github.
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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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When is assembly faster than C?
...IX has a ffs() function, but its semantics don't match x86 bsf / bsr. See https://en.wikipedia.org/wiki/Find_first_set).
Some compilers can sometimes recognize a loop that counts the number of set bits in an integer and compile it to a popcnt instruction (if enabled at compile time), but it's much...
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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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...
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,...
What is Node.js? [closed]
... model like Apache + PHP, Perl, Ruby, etc. Unhandled exceptions will bring down the entire process, necessitating logic to restart failed workers (see cluster). Modules with buggy native code can hard-crash the process. Whenever a worker dies, any requests it was handling are dropped, so one buggy A...