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PyPy — How can it possibly beat CPython?
...e grained locks).
As Marcelo mentioned, the JIT. Being able to on the fly confirm the type of an object can save you the need to do multiple pointer dereferences to finally arrive at the method you want to call.
Q2. Which Python implementation was used to implement PyPy?
The PyPy interpreter is ...
Timeout a command in bash without unnecessary delay
...cess is still alive.
declare -i interval=DEFAULT_INTERVAL
# Delay between posting the SIGTERM signal and destroying the process by SIGKILL.
declare -i delay=DEFAULT_DELAY
function printUsage() {
cat <<EOF
Synopsis
$scriptName [-t timeout] [-i interval] [-d delay] command
Execute ...
What is the difference between float and double?
...the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the differences betwe...
What is JSON and why would I use it?
...o think JSON is just for JavaScript, check out this post that explains and confirms otherwise.
References
JSON.org
Wikipedia
Json in 3 minutes (Thanks mson)
Using JSON with Yahoo! Web Services (Thanks gljivar)
JSON to CSV Converter
Alternative JSON to CSV Converter
JSON Lint (JSON validator)
...
How to change an application icon programmatically in Android?
Is it possible to change an application icon directly from the program?
I mean, change icon.png in the res\drawable folder.
I would like to let users to change application's icon from the program so next time they would see the previously selected icon in the launcher.
...
Inversion of Control vs Dependency Injection
...uppose we are building an application which contains a feature to send SMS confirmation messages once the order has been shipped.
We will have two classes, one is responsible for sending the SMS (SMSService), and another responsible for capturing user inputs (UIHandler), our code will look as below:...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...
Can someone confirm if this works when running in x64? I am pretty sure Jet only works if your app is compiled or running in 32-bit mode.
– Lamar
Sep 30 '08 at 1:45
...
Limit file format when using ?
I'd like to restrict the type of file that can be chosen from the native OS file chooser when the user clicks the Browse button in the <input type="file"> element in HTML. I have a feeling it's impossible, but I'd like to know if there is a solution. I'd like to keep solely to HTML and Jav...
How can I replace a newline (\n) using sed?
...e with a space on the pattern space (which is the whole file).
Here is cross-platform compatible syntax which works with BSD and OS X's sed (as per @Benjie comment):
sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/ /g' file
As you can see, using sed for this otherwise simple problem is problematic. For a...
Singletons vs. Application Context in Android?
Recalling this post enumerating several problems of using singletons
and having seen several examples of Android applications using singleton pattern, I wonder if it's a good idea to use Singletons instead of single instances shared through global application state (subclassing android.os.Applicat...