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Which UUID version to use?
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There are two different ways of generating a UUID.
If you just need a unique ID, you want a version 1 or version 4.
Version 1: This generates a unique ID based on a network card MAC address and a timer. These IDs are easy to predict (giv...
How to convert an Stream into a byte[] in C#? [duplicate]
...System.IO.Stream stream)
{
long originalPosition = 0;
if(stream.CanSeek)
{
originalPosition = stream.Position;
stream.Position = 0;
}
try
{
byte[] readBuffer = new byte[4096];
int totalBytesRead ...
Comparing Java enum members: == or equals()?
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Both are technically correct. If you look at the source code for .equals(), it simply defers to ==.
I use ==, however, as that will be null safe.
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onMeasure custom view explanation
... drawing in onDraw overrided method. Why I need to override onMeasure ? If I didn't, everything seen to be right. May someone explain it? How should I write my onMeasure method? I've seen couple tutorials, but each one is a little bit different than the other. Sometimes they call super.onMeasu...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...ting SQL commands because it is more efficient to SELECT columns you specifically need.
47 Answers
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AngularJS ng-if with multiple conditions
I'd like to know if it's possible to have something like this:
5 Answers
5
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When NOT to call super() method when overriding?
... will perform the save() logic for both A and B, in this particular order. If you weren't calling super.save() inside B.save(), A.save() wouldn't be called. And if you called super.save() after save(b), A.save() would be effectively performed afterwards B.save().
If you want to override super's beh...
How do I detect the Python version at runtime? [duplicate]
...o.
For example, to check that you are running Python 3.x, use
import sys
if sys.version_info[0] < 3:
raise Exception("Must be using Python 3")
Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number.
In Python 2.7 and later, the ...
Remove all the elements that occur in one list from another
...es exactly what you want and stores the result in l3:
l3 = [x for x in l1 if x not in l2]
l3 will contain [1, 6].
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How to check if an option is selected?
... what you are looking for:
$('#mySelectBox option').each(function() {
if($(this).is(':selected')) ...
The non jQuery (arguably best practice) way to do it would be:
$('#mySelectBox option').each(function() {
if(this.selected) ...
Although, if you are just looking for the selected value...