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How does push notification technology work on Android?
How has Google implemented their push notification feature? Does it work through polling done by a service running in the background or in a different way?
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LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
...g the appropriate one, depending on the expected results, improves readability.
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Should all jquery events be bound to $(document)?
...f, event delegation does not always make your code faster. In some cases, it's is advantageous and in some cases not. You should use event delegation when you actually need event delegation and when you benefit from it. Otherwise, you should bind event handlers directly to the objects where the e...
When is it better to use String.Format vs string concatenation?
...code that is parsing an index value to determine a cell input into Excel. It's got me thinking...
14 Answers
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What is Scala's yield?
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It is used in sequence comprehensions (like Python's list-comprehensions and generators, where you may use yield too).
It is applied in combination with for and writes a new element into the resulting sequence.
Simple examp...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
I want to toggle a variable between 0 and 1. If it's 0 I want to set it to 1, else if it's 1 I want to set it to 0.
31 Answ...
JUnit vs TestNG [closed]
At work we are currently still using JUnit 3 to run our tests. We have been considering switching over to JUnit 4 for new tests being written but I have been keeping an eye on TestNG for a while now. What experiences have you all had with either JUnit 4 or TestNG, and which seems to work better fo...
Difference between declaring variables before or in loop?
... to repeatedly inside the loop, makes any (performance) difference?
A (quite pointless) example in Java:
25 Answers
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How to get current memory usage in android?
I have used /proc/meminfo and parsed command response.however it result shows that :
11 Answers
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What is the point of interfaces in PHP?
...low you to create code which defines the methods of classes that implement it. You cannot however add any code to those methods.
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