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Makefile variable as prerequisite
...
deploy:
test -n "$(ENV)" # $$ENV
rsync . $(ENV).example.com:/var/www/myapp/
The reasons:
it's a simple one-liner
it's compact
it's located close to the commands which use the variable
Don't forget the comment which is important for debugging:
test -n ""
Makefile:3: recipe for target...
How to import existing *.sql files in PostgreSQL 8.4?
...
Here's the documentation of the psql application (thanks, Frank): http://www.postgresql.org/docs/current/static/app-psql.html
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Meaning of -
...gt;
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Virtual Library</title>
</head>
<body>
<p...
Difference between solr and lucene
...ind a good comparison about the purpose of lucence and solar here:
http://www.lucenetutorial.com/lucene-vs-solr.html
TLDR: Lucence is just the engine, Solar is the car you can drive (equipped with rest-api etc.)
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Node.js: Difference between req.query[] and req.params
....get('/hi/:param1', function(req,res){} );
and given this URL
http://www.google.com/hi/there?qs1=you&qs2=tube
You will have:
req.query
{
qs1: 'you',
qs2: 'tube'
}
req.params
{
param1: 'there'
}
Express req.params >>
...
Simple example of threading in C++
...was instrumental in hammering out the c++0x standard on the topic.
http://www.hpl.hp.com/techreports/2004/HPL-2004-209.html
That said there are several cross-platform thread C++ libraries that work just fine in practice. Intel thread building blocks contains a tbb::thread object that closely appro...
In Vim, how do I apply a macro to a set of lines?
... range, no matter if by visual selection or by a :40,50 / :+10
See http://www.vim.org/scripts/script.php?script_id=3271
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nginx: send all requests to a single html page
..._core_module.html#try_files
So I ended up using the following:
root /var/www/mysite;
location / {
try_files $uri /base.html;
}
location = /base.html {
expires 30s;
}
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...this? The text of the page has some java interoperability remarks.
http://www.scala-lang.org/node/128
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In C++, what is a “namespace alias”?
...ithin that namespace. ie std::string becomes string.
my resource: https://www.quora.com/What-is-namespace-in-C++-1
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