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How to use Elasticsearch with MongoDB?
...host" : "127.0.0.1:27017" } ] }
rs.initiate(config)
rs.slaveOk() // allows read operations to run on secondary members.
Now install Elasticsearch. I'm just following this helpful Gist.
Make sure Java is installed.
sudo apt-get install openjdk-7-jre-headless -y
Stick with v1.1.x for now until t...
How to set environment variables in Python?
... only the way your program's children run. True, your program can set and read back environment variables, but only from the environment it configures for its children. See also: change current process environment. So far I haven't found a way for a Python script to modify its parent env.
...
std::unique_lock or std::lock_guard?
...ch needs mutual exclusion (e.g. open the same
file in multiple threads).
*/
//mutex is automatically released when lock goes out of scope
};
To clarify a question by chmike, by default std::lock_guard and std::unique_lock are the same.
So in the above case, yo...
PHP Session Fixation / Hijacking
...ssion Fixation and hijacking and how to prevent these problems. I've been reading the following two articles on Chris Shiflett's website:
...
SCOPE_IDENTITY() for GUIDs?
...inserted.GuidColumn
VALUES(1)
The example above is useful if you want to read the value from a .Net client. To read the value from .Net you would just use the ExecuteScalar method.
...
string sql = "INSERT INTO GuidTest(IntColumn) OUTPUT inserted.GuidColumn VALUES(1)";
SqlCommand cmd = new SqlCom...
Assignment in an if statement
...s though. It's not terribly unusual for me to do it in a while though when reading streams of data. For example:
string line;
while ((line = reader.ReadLine()) != null)
{
...
}
These days I normally prefer to use a wrapper which lets me use foreach (string line in ...) but I view the above as...
How to convert timestamps to dates in Bash?
...]]
then
if [[ -p /dev/stdin ]] # input from a pipe
then
read -r p
else
echo "No timestamp given." >&2
exit
fi
else
p=$1
fi
date -d "@$p" +%c
share
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...
How to use the toString method in Java?
... a concise but
informative representation that is
easy for a person to read. It is
recommended that all subclasses
override this method.
The toString method for class Object
returns a string consisting of the
name of the class of which the object
is an instance, the at-sign chara...
Why specify @charset “UTF-8”; in your CSS file?
...
It tells the browser to read the css file as UTF-8. This is handy if your CSS contains unicode characters and not only ASCII.
Using it in the meta tag is fine, but only for pages that include that meta tag.
Read about the rules for character set r...
Where are environment variables stored in registry?
...s an environment variable remotely. To do this I think the best way is to read it from registry.
4 Answers
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