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Android: Difference between Parcelable and Serializable?
... a class Serializable by implementing the interface, and Java will automatically serialize it in certain situations.
Parcelable is an Android specific interface where you implement the serialization yourself. It was created to be far more efficient that Serializable, and to get around some probl...
How to resize superview to fit all subviews with autolayout?
...on a UITableViewCell (to determine row height for example) then you should call it against your cell contentView and grab the height.
Further considerations exist if you have one or more UILabel's in your view that are multiline. For these it is imperitive that the preferredMaxLayoutWidth proper...
Why is the Java main method static?
...ic because otherwise there would be ambiguity: which constructor should be called? Especially if your class looks like this:
public class JavaClass{
protected JavaClass(int x){}
public void main(String[] args){
}
}
Should the JVM call new JavaClass(int)? What should it pass for x?
If not...
How to make a function wait until a callback has been called using node.js
...working with event driven systems like node, your function should accept a callback parameter that will be invoked when then computation is complete. The caller should not wait for the value to be "returned" in the normal sense, but rather send the routine that will handle the resulting value:
func...
Fastest way to check if a string is JSON in PHP?
...true number. 6.5 = true, '300' = true, 9 = true etc. So this might be a valid JSON value but the function might not behave as you expect, if you want to check only for valid JSON strings with {} or [];
– BadHorsie
Feb 25 '14 at 16:57
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How to detect when an Android app goes to the background and come back to the foreground
...
The onPause() and onResume() methods are called when the application is brought to the background and into the foreground again. However, they are also called when the application is started for the first time and before it is killed. You can read more in Activity.
...
java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has
...
A common misunderstanding among starters is that they think that the call of a forward(), sendRedirect(), or sendError() would magically exit and "jump" out of the method block, hereby ignoring the remnant of the code. For example:
protected void doXxx() {
if (someCondition) {
send...
How can I delete Docker's images?
...containers. It will not be possible to restore them!
This solution is provided by Techoverflow.net.
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What are some examples of commonly used practices for naming git branches? [closed]
...wever, the op is looking for advice on the conventions on what to actually call the branches.
– wheeler
May 1 '17 at 20:13
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show 3 more com...
What is Delegate? [closed]
...calcTotalDelegate calcTotal)
{
return calcTotal(amt);
}
And we could call the CalcMyTotal method passing in the delegate method we wanted to use.
double tot1 = CalcMyTotal(100.34, CalcTotalMethod1);
double tot2 = CalcMyTotal(100.34, CalcTotalMethod2);
Console.WriteLine(tot1);
Console.WriteLin...