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Linux: copy and create destination dir if it does not exist
...om the info page (viewable at http://www.gnu.org/software/coreutils/manual/html_node/cp-invocation.html#cp-invocation or with info cp or man cp):
--parents
Form the name of each destination file by appending to the target
directory a slash and the specified name of the source file. Th...
Optimal way to concatenate/aggregate strings
...ure SQL
https://www.postgresql.org/docs/current/static/functions-aggregate.html
https://docs.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql
GROUP_CONCAT() in MySQL
http://dev.mysql.com/doc/refman/5.7/en/group-by-functions.html#function_group-concat
(Thanks to @Brianjorden and @m...
Detect rotation of Android phone in the browser with JavaScript
...
It is possible in HTML5.
You can read more (and try a live demo) here: http://slides.html5rocks.com/#slide-orientation.
window.addEventListener('deviceorientation', function(event) {
var a = event.alpha;
var b = event.beta;
var g ...
Will Emacs make me a better programmer? [closed]
... other postings of his. http://steve-yegge.blogspot.com/2008_04_01_archive.html is probably the most comprehensive, but the info is buried in there since it's on a tangent to the main subject.
I guess to summarize: the programmers who are merely good or competent will pick up an IDE and get to know...
How do I copy an entire directory of files into an existing directory using Python?
...ctory with python
Reference - https://docs.python.org/3/distutils/apiref.html#distutils.dir_util.copy_tree
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Redefine tab as 4 spaces
...will be wrong when 'tabstop' ischanged.
Source:
vimdoc.sourceforge.net/htmldoc/options.html#'tabstop'
:help tabstop
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How to disable typing special characters when pressing option key in Mac OS X? [closed]
...n/Cocoa/Conceptual/EventOverview/TextDefaultsBindings/TextDefaultsBindings.html
Here is a good list of things you can bind to:
https://www.hcs.harvard.edu/~jrus/site/selectors.html
Oh, by the way, if you bind a key to an undefined action, your application will have a memory leak and your system wi...
Python/postgres/psycopg2: getting ID of row just inserted
...See the psycopg docs for more details: http://initd.org/psycopg/docs/usage.html#passing-parameters-to-sql-queries
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jquery get all form elements: input, textarea & select
...has ' + this.elements.length + ' form element(s).');
});
$('#results').html(summary.join('<br />'));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<form id="A" style="display: none;">
<input type="text" />
<...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...sizeof(void(*)()) - see opengroup.org/onlinepubs/009695399/functions/dlsym.html
– Daniel Earwicker
Aug 12 '10 at 7:44
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