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Android - Launcher Icon Size
...B 512 x 512. This is so large so that Google can rescale it to any size in order to advertise your app throughout the Google Play Store and not add pixelation to your logo.
Basically, all of the other icons should be in proportion to the 'baseline' icon, MDPI at 48 x 48.
LDPI is MDPI x 0.75.
TVDP...
Is it possible to capture a Ctrl+C signal and run a cleanup function, in a “defer” fashion?
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Note that in order for the goroutine to get processor time to handle the signal, the main goroutine must call a blocking operation or call runtime.Gosched in an appropriate place (in your program's main loop, if it has one)
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Rails migration for has_and_belongs_to_many join table
...r_id:integer
(note the table name lists both join tables in alphabetical order)
and then for rails 3 and below only, you need to edit your generated migration so an id field is not created:
create_table :students_teachers, :id => false do |t|
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Real life trading API [closed]
... that's what IBs do. Even a live market data feed (which you would need in order trade sensibly) can be ridiculously expensive.
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Convert light frequency to RGB?
... colour space - sRGB"
*
* @param xyz XYZ values in a double array in the order of X, Y, Z. each value in the range of [0.0, 1.0]
* @return RGB values in a double array, in the order of R, G, B. each value in the range of [0.0, 1.0]
*/
public static double[] srgbXYZ2RGB(double[] xyz) {
double...
What is a “web service” in plain English?
...n about books at Amazon.com
You can use a similar web service to submit an order to Amazon.com
You could CREATE a web service to allow outside applications to find out about product information within your company
you could create a web service to allow outside applications to submit orders to your ...
What are WSDL, SOAP and REST?
...ter seeing the Menu Items we make up our Mind (Process our mind on what to order): So, basically we make Proxy classes based on WSDL Document.
SOAP: Then when we actually order the food based on the Menu's: Meaning we use proxy classes to call upon the service methods which is done using SOAP. :)
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using lodash .groupBy. how to add your own keys for grouped output?
...ficult with lodash or Underscore because the arguments are in the opposite order order, so you'd have to use _.partial a lot.
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How do short URLs services work?
...r tiny urls. You'll mistakenly hear that they create a hash of the URL in order to generate that unique code for the shortened URL. This is incorrect in most cases, they aren't using a hashing algorithm (where you could potentially have collisions).
Most of the popular URL shortening services simp...
How exactly does the callstack work?
...called function prologue and epilogue, respectively.
Inside the frame the order of the variables is completely unspecified; Compilers "reorder" the positions of local variables inside a frame appropriately to optimize their alignment so the processor can fetch them as quickly as possible. The cruci...