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How to swap keys and values in a hash
...
files = {
'Input.txt' => 'Randy',
'Code.py' => 'Stan',
'Output.txt' => 'Randy'
}
h = Hash.new{|h,k| h[k] = []} # Create hash that defaults unknown keys to empty an empty list
files.map {|k,v| h[v]<< k} #...
Does Python support multithreading? Can it speed up execution time?
...ot create an exhaustive list, ever, but the rule-of-thumb is that any I/O (file reading and writing, network sockets, pipes) is handled in C, and a lot of C libraries also release the GIL for their operations, but it is up to the libraries to document this for you.
– Martijn Pi...
Convert blob URL to normal URL
...browser to a server and have the server make it available like an ordinary file.
It is possible convert a blob: URL into a data: URL, at least in Chrome. You can use an AJAX request to "fetch" the data from the blob: URL (even though it's really just pulling it out of your browser's memory, not mak...
Replace selector images programmatically
...setImageDrawable() Thank you very much it worked and saved me about 40 xml files!
– dropsOfJupiter
Jan 16 '11 at 4:43
2
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What are the differences between type() and isinstance()?
...fizz', 'buzz')]))
raises an error!
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 3, in foo
ValueError: argument must be a dict
isinstance
But if we use isinstance, we can support Liskov Substitution!:
def foo(a_dict):
if ...
Detect iPad Mini in HTML5
...
Play a stereo audio file and compare the accelerometer response when volume is high on the right channel and on the left channel - iPad2 had mono speakers whereas iPad Mini has built-in stereo speakers.
Need your help to gather the data please ...
HTTPS with Visual Studio's built-in ASP.NET Development Server
...comes bundled with a bunch of other stuff.
Steps:
Install the IIS Tools File. If you want, you can click Custom and tell it to only install SelfSSL.
Activate the site in IIS that you want to install a SSL certificate too.
Go to Start / Programs / IIS Resources / SelfSSL
This will launch a comm...
Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
...="test4.xml" />
The beans are instantiated from all four configuration files test1.xml, test2.xml, test3.xml, test4.xml.
Conclusion: In Scenario 2 applicationContext and DispatcherServlet are not related.
Scenario 3
In a web application with spring MVC.
In web.xml define:
<servlet>
<...
Custom error pages on asp.net MVC3
...
You can also do this in the Web.Config File. Here is an example that works in IIS 7.5.
<system.webServer>
<httpErrors errorMode="DetailedLocalOnly" defaultResponseMode="File">
<remove statusCode="502" subStatusCode="...
How to make an app's background image repeat
... drawable-mdpi & drawable-ldpi, you'll need to add this backrepeat.xml file and the relevant images to each of these to allow this functionality in high, medium and low dpi (dots per inch) screen sizes.
– saber tabatabaee yazdi
Nov 13 '13 at 14:29
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