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Python: most idiomatic way to convert None to empty string?
What is the most idiomatic way to do the following?
16 Answers
16
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Fastest way to tell if two files have the same contents in Unix/Linux?
...e data or not. I do this a for a lot of files, and in my script the diff command seems to be the performance bottleneck.
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What is the logic behind the “using” keyword in C++?
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Is the order of iterating through std::map known (and guaranteed by the standard)?
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What is the simplest and most robust way to get the user's current location on Android?
...e value provided from Network.
One more approach is to use LocationClient http://developer.android.com/training/location/retrieve-current.html. But it requires Google Play Services apk to be installed on user device.
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How to show all shared libraries used by executables in Linux?
...ldd to list shared libraries for each executable.
Cleanup the output
Sort, compute counts, sort by count
To find the answer for all executables in the "/bin" directory:
find /bin -type f -perm /a+x -exec ldd {} \; \
| grep so \
| sed -e '/^[^\t]/ d' \
| sed -e 's/\t//' \
| sed -e 's/.*=..//' \
| ...
Creating an abstract class in Objective-C
...a class as abstract, just don't use it without subclassing it. There is no compile-time enforcement that prevents instantiation of an abstract class, however. In fact, there is nothing to stop a user from providing implementations of abstract methods via a category (i.e. at runtime). You can force a...
Database design for audit logging
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How to make connection to Postgres via Node.js
...se.
The interface in node.js that I used can be found here https://github.com/brianc/node-postgres
var pg = require('pg');
var conString = "postgres://YourUserName:YourPassword@localhost:5432/YourDatabase";
var client = new pg.Client(conString);
client.connect();
//queries are queued and execute...
Installing Python packages from local file system folder to virtualenv with pip
...cal package index which lists the links to all packages. This tool helps:
https://github.com/wolever/pip2pi
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