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Why is '+' not understood by Python sets?
...st int/long) define this operation across a sequence of boolean values and call it "bitwise or". In fact this operation is so similar to the set union that binary integers are sometimes also called "Bit sets", where the elements in the set are taken to be the natural numbers.
Because int already d...
How to Get a Layout Inflater Given a Context?
...or nice question, in implement of method LayoutInflater.from(context) also call context.getSystemService() to get LayoutInflater Service Provider from System Manager. So may be have a litter difference in call stack.
– NguyenDat
Mar 20 '12 at 10:53
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Express res.sendfile throwing forbidden error
...ath; the "../" is considered malicious. Resolve the local path first, then call res.sendfile. You can resolve the path with path.resolve beforehand.
var path = require('path');
res.sendFile(path.resolve('temp/index.html'));
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What is the purpose of “!” and “?” at the end of method names?
...e method is going to return a boolean and the ! modifies the object it was called on. They are there to improve readability when looking at the code.
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Return anonymous type results?
.... We might also see some much simpler code where we just want a tuple, basically. Not everything needs to be an object with complex behaviour. Sometimes "just the data" is the Right Thing. IMO, of course.
– Jon Skeet
Feb 10 '09 at 23:18
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How many Activities vs Fragments?
...hat most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code.
In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains the logic for changing Fragments...
jQuery map vs. each
...d in the map function. You will have to supply the first parameter in the callback (eg we used i above). Ironically, the callback arguments used in the each method are the reverse of the callback arguments in the map function so be careful.
map(arr, function(elem, index) {});
// versus
each(arr,...
How to test if list element exists?
...ect exist. The string "foo$a" is interpreted literary: Is there a variable called "foo$a"? ...and the answer is FALSE...
foo <- list(a=42, b=NULL) # variable "foo" with element "a"
"bar$a" <- 42 # A variable actually called "bar$a"...
ls() # will include "foo" and "bar$a"
exists("foo$a") #...
Git pull from another repository
I have a repository called Generic , which is a generic application. I have forked it into a repository called Acme , which just builds upon the application stored Generic repository and adds Acme Co branding to it.
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How to check whether an object has certain method/property?
Using dynamic pattern perhaps? You can call any method/property using the dynamic keyword, right? How to check whether the method exist before calling myDynamicObject.DoStuff(), for example?
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