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What is the difference between save and insert in Mongo DB?
... essentially do an upsert (update if it finds the doc, insert otherwise):
http://docs.mongodb.org/manual/reference/method/db.collection.save/#db.collection.save
Insert is just that, a straight insert.
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Passing argument to alias in bash [duplicate]
...lpr \!* -Pps5'
print part1.ps glossary.ps figure.ps
(Examples taken from http://unixhelp.ed.ac.uk/shell/alias_csh2.1.html .)
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Chaining multiple filter() in Django, is this a bug?
...' a potentially different row that matches B.
Look at the example here:
https://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships
particularly:
Everything inside a single filter() call is applied simultaneously to filter out items matching all those require...
Convert SVG to image (JPEG, PNG, etc.) in the browser
...:
Use the canvg JavaScript library to render the SVG image using Canvas: https://github.com/gabelerner/canvg
Capture a data URI encoded as a JPG (or PNG) from the Canvas, according to these instructions: Capture HTML Canvas as gif/jpg/png/pdf?
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Python extending with - using super() Python 3 vs Python 2
...It is more smart,
super()
is enough in most case. You can refer to http://www.python.org/dev/peps/pep-3135/
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How do I install cygwin components from the command line?
...ately, but it is not entirely stable and
relies on workarounds.
apt-cyg: http://github.com/transcode-open/apt-cyg
Check out the issues tab for the project to see the known problems.
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Detecting request type in PHP (GET, POST, PUT or DELETE)
... $_GET contain variables from the URL's query component, regardless of the HTTP method. $_POST will contain form fields if the request was sent as application/x-www-form-urlencoded.
– Pj Dietz
Jul 23 '14 at 21:03
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Coalesce function for PHP?
...echo '' ?: 'B';
// B
echo false ?: 'B';
// B
echo null ?: 'B';
Source: http://www.php.net/ChangeLog-5.php#5.3.0
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Javascript - Append HTML to container element without innerHTML
...om of this post.
xml_add('before', id_('element_after'), '<span xmlns="http://www.w3.org/1999/xhtml">Some text.</span>');
xml_add('after', id_('element_before'), '<input type="text" xmlns="http://www.w3.org/1999/xhtml" />');
xml_add('inside', id_('element_parent'), '<input ty...
MongoDB/Mongoose querying at a specific date?
...se following approach for API method to get results from specific day:
# [HTTP GET]
getMeals: (req, res) ->
options = {}
# eg. api/v1/meals?date=Tue+Jan+13+2015+00%3A00%3A00+GMT%2B0100+(CET)
if req.query.date?
date = new Date req.query.date
date.setHours 0, 0, 0, 0
endDate = ne...