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git add . vs git commit -a
... files it knows about. You can use git add to select what files to commit. Consult the docs for more info: here
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Pointers, smart pointers or shared pointers? [duplicate]
...hat it is in charge of deleteing it at some point. They allow you to get a raw reference to the pointer they wrap for passing to other methods, as well as releasing the pointer, allowing someone else to own it. Copying them does not make sense.
Shared pointers is a stack-allocated object that wraps ...
How to create a directory using Ansible
...esn't exist
- file: path=/src/www state=directory mode=0755
You can also consult
http://docs.ansible.com/ansible/file_module.html
for further details regaridng directory and file system.
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Track the time a command takes in UNIX/LINUX?
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Yes, use time <command>, such as
time ls
Consult man time for more options. Link.
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Redis key naming conventions?
...e: always ensure that user is able to access only things you intended. The raw URL-to-key approach above is able to fetch user/1/password as well, as noted by commentators. This should not be a problem if you use Redis as a public read-only cache.
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Storing time-series data, relational or non?
...It allows me to produce Charts Like This, six keystrokes after receiving a raw monitoring stats file from the customer, using a single SELECT command. Notice the mix-and-match; OS and server on the same chart; a variety of Pivots. Of course, there is no limit to the number of stats matrices, and th...
Windows service on Local Computer started and then stopped error
...eption. This is pretty difficult to debug, but there are a few options.
Consult the Windows Event Viewer. Normally you can get to this by going to the computer/server manager, then clicking Event Viewer -> Windows Logs -> Application. You can see what threw the exception here, which may h...
std::string to char*
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The answer is bulky, inelegant, non-local, uses raw arrays, and requires attention to exception safety. vector was invented precisely as a wrapper for dynamic arrays, so not using it seems like a missed opportunity at best, and in violation of the spirit of C++ at worst.
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Receive JSON POST with PHP
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Use $HTTP_RAW_POST_DATA instead of $_POST.
It will give you POST data as is.
You will be able to decode it using json_decode() later.
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List of all index & index columns in SQL Server DB
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There are two "sys" catalog views you can consult: sys.indexes and sys.index_columns.
Those will give you just about any info you could possibly want about indices and their columns.
EDIT: This query's getting pretty close to what you're looking for:
SELECT
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