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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...: /home/marcin/work/github/project1
from (irb):17
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I also really encourage you to try ruby-debug:
http://railscasts.com/episodes/54-debugging-with-ruby-debug
http://www.sitepoint.com/article/debug-rails-app-ruby-debug/
http://www.datanoise.com/articles/2006/7/12/tutorial-on-ruby-deb...
How to keep one variable constant with other one changing with row in excel
...ing the formula into new cells.
Since you are dragging across rows, you really only need to freeze the row part:
=(B0+4)/A$0
Keyboard Shortcuts
Commenters helpfully pointed out that you can toggle relative addressing for a formula in the currently selected cells with these keyboard shortcuts:...
how to convert an RGB image to numpy array?
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For future reference: $ pip install opencv-python to install opencv
– Kyle C
Aug 9 '18 at 22:17
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How can I increment a date by one day in Java?
...te useless to add days using DATE, DAY_OF_MONTH or even DAY_OF_YEAR - they all are incremented by modulus. So considering Calendar of 31-12-1970, add(DAY_OF_YEAR, 1) or roll(), however roll() finally calls add(), will give 01-01-1970. I guess the only correct way is to set time with milliseconds....
Bootstrap table without stripe / borders
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I didn't put the 'borderless' for the td element.
Tested and it worked!
All the borders and paddings are completely stripped off.
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How can I create a copy of an Oracle table without copying the data?
...eating the new table. You would have to change the names of the table and all constraints of course.
(You could also do this in older versions using EXP/IMP, but it's much easier now.)
Edited to add
If the table you are after is in a different schema:
SELECT dbms_metadata.get_ddl( 'TABLE', 'MY_T...
Read the package name of an Android APK
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Is there a way to call this from within Android code? I want to be able to launch a package of an apk I download through my app.
– Matt Wear
Jun 19 '12 at 15:59
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Difference between web server, web container and application server
...d back with a HTTP response.
Application Server or App Server: can handle all application operations between users and an organization's back end business applications or databases.It is frequently viewed as part of a three-tier application with:
Presentation tier, logic tier,Data tier
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Listview Scroll to the end of the list after updating the list
I would like to make sure that the list is scrolled all the way to the bottom, after I have updated the listview by using listAdapter, so that it displays the last element entered in the list. How can I do this ?
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Find region from within an EC2 instance
...e and is powered by AWS's backends. It will not work anywhere else (essentially because that IP is an APIPA). Also there is no way to get this information directly from inside the instance without connecting to a metadata source. This assumes that the 169.254.169.254 API is available, and your scrip...