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How to take screenshot of a div with JavaScript?
...h a virtual screen-shot with this level of accuracy. I used CDN for the 2 libraries I had to add: <!-- html2canvas --> <script src="cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/…> <!-- filesaver --> <script src="cdn.jsdelivr.net/npm/file-saver@2.0.2/dist/…&g...
How to kill zombie process
...gcc-bin/3.3.6/gcc -fomit-fr
4 0 18583 18582 21 0 6684 3100 - R ? 0:00 /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/cc1 -quie
18581, 18582, 18583 are zombies -
kill -9 18581 18582 18583
has no effect.
kill -9 31706
removes the zombies.
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Why does make think the target is up to date?
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I had a directory called build and another called lib. In hindsight, these are not perfect target names. Ugh.....make.
– MattD
Oct 15 '13 at 20:35
10
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Simplest way to profile a PHP script
...ckpoint, and prof_print() at the end:
prof_flag("Start");
include '../lib/database.php';
include '../lib/helper_func.php';
prof_flag("Connect to DB");
connect_to_db();
prof_flag("Perform query");
// Get all the data
$select_query = "SELECT * FROM data_table";
$result = mysql...
Why should I declare a virtual destructor for an abstract class in C++?
...the answer was originally posted (the Boost documentation at boost.org/doc/libs/1_52_0/libs/smart_ptr/shared_ptr.htm suggests it may have), but it's not true these days that shared_ptr will attempt to delete the object as if it were a Base * - it remembers the type of the thing you created it with. ...
Why use pip over easy_install? [closed]
...When using sudo apt-get Ubuntu/Debian will install Python packages in /usr/lib/python/dist-packages whereas sudo pip or sudo easy_install will install in /local/lib/python/site-packages and unfortunately the Debian/Ubuntu packages often have different names that pip isn't familiar with. The best sol...
Rails.env vs RAILS_ENV
...to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initializer.rb, line 55
def env
@_env ||= ActiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::StringInquirer:
Wrapping a string in this ...
Using the rJava package on Win7 64 bit with R
...
That is almost correct. This actually works:
install.packages('rJava', .libPaths()[1], 'http://www.rforge.net/')
Watch the punctuation! The mysterious “.libPaths()[1],” just tells R to install the package in the primary library directory. For some reason, leaving the value blank doesn’t wo...
Redefining NULL
...ss.
Nevertheless, with (heavy) modifications to the compiler and standard library, it's not impossible to have NULL be represented with an alternate bit pattern while still remaining strictly conformant to the standard library. It is not sufficient to simply change the definition of NULL itself how...
Rails how to run rake task
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Have you tried rake reklamer:iqmedier ?
My custom rake tasks are in the lib directory, not in lib/tasks. Not sure if that matters.
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