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Does MongoDB's $in clause guarantee order
...sults
{ "$sort": { "weight": 1 } }
])
So that would be the expanded form. What basically happens here is that just as the array of values is passed to $in you also construct a "nested" $cond statement to test the values and assign an appropriate weight. As that "weight" value reflects the ord...
How do you get assembler output from C/C++ source in gcc?
... helloworld.c
This will run the preprocessor (cpp) over helloworld.c, perform the initial compilation and then stop before the assembler is run.
By default this will output a file helloworld.s. The output file can be still be set by using the -o option.
gcc -S -o my_asm_output.s helloworld.c
O...
How to clear APC cache entries?
...f of a Symfony task. In the Symfony version, calls are made to the Symfony form of copy and unlink, which handle errors. You may want to add checks that they succeed.
copy($apcPaths['data'], $apcPaths['web']); //'data' is a non web accessable directory
$url = 'http://localhost/apc_clear.php'; //us...
Random data in Unit Tests?
...dsyme/archive/2008/08/09/fscheck-0-2.aspx
These tools will take your well-formed spec as input and automatically generate as many unit tests as you want, with automatically generated data. They use "shrinking" strategies (which you can tweak) to find the simplest possible test case to break your co...
Passing base64 encoded strings in URL
...e64, the original data could be binary or anything, but it is encoded in a form that can be transmitted easily using simple protocols.
– Thiyagaraj
Sep 3 '09 at 19:42
3
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How to Correctly Use Lists in R?
...rs do not do. Lists are re-used for a variety of purposes in R, including forming the base of a data.frame, which is a list of vectors of arbitrary type (but the same length).
Why do these two expressions not return the same result?
x = list(1, 2, 3, 4); x2 = list(1:4)
To add to @Shane's answer...
How can I set the request header for curl?
...imes:
curl -H "Accept-Charset: utf-8" -H "Content-Type: application/x-www-form-urlencoded" http://www.some-domain.com
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What does the term “porcelain” mean in Git?
... meant to be parsed.
--porcelain
Give the output in an easy-to-parse format for scripts. This is similar to the short output, but will remain stable across git versions and regardless of user configuration. See below for details.
The thread mentioned above details:
This is my fault, to s...
Check if database exists in PostgreSQL using shell
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If you need to perform this with non postgres user you can add -U user, but have to list a database to connect to, as none could exist you can use the postgres template1 database that always exists: psql -U user -tAc "SELECT 1 FROM pg_databas...
Handling JSON Post Request in Go
...t find an example of Go handling a POST request of JSON data. They are all form POSTs.
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