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What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
...ot slower. On the other hand, a join may also perform badly if there is no index that can be used, so just because you use a join doesn't mean that you are safe. You would have to examine the execution plan of the query to tell if there may be any performance problems.
...
Populating a ListView using an ArrayList?
...w OnItemClickListener()
{
// argument position gives the index of item which is clicked
public void onItemClick(AdapterView<?> arg0, View v,int position, long arg3)
{
String selectedmovie=movies.get(position);
Toast.makeText...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...ava SE Downloads": http://www.oracle.com/technetwork/java/javase/downloads/index.html
Click "JDK Download" and visit "Java SE Development Kit 7 Downloads": http://www.oracle.com/technetwork/java/javase/downloads/java-se-jdk-7-download-432154.html (note that following the link from step #1 will take ...
Declaring a custom android UI element using XML
...rs, com.android.internal.R.styleable.TextView, defStyle, 0);
int n = a.getIndexCount();
for (int i = 0; i < n; i++)
{
int attr = a.getIndex(i);
// huge switch with pattern value=a.getXXX(attr) <=> a.getXXX(a.getIndex(i))
}
a.recycle();
What we can see here?
obtainStyledAttribute...
Proper way to declare custom exceptions in modern Python?
...sible to pass in multiple items to the exception and access them via tuple indexes, but this is highly discouraged (and was even intended for deprecation a while back). If you do need more than a single piece of information and the above method is not sufficient for you, then you should subclass Exc...
How to make the 'cut' command treat same sequental delimiters as one?
...l -lane 'print $F[3]' text.txt
However, the @F autosplit array starts at index $F[0] while awk fields start with $1
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When to use Vanilla JavaScript vs. jQuery?
...ari.)
this.className to get or set an entire "class" property
this.selectedIndex against a <select> to get the selected index
this.options against a <select> to get a list of <option> elements
this.text against an <option> to get its text content
this.rows against a <table...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...sitory: http://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html
Select the folder corresponding to the OS you're interested in (I have Win x64, but had to use Win,because there was no x64 build corresponding to the version I was looking for).
If you select Win, you could be in ...
How to vertically center a container in Bootstrap?
...that elements properly (relative, absolute? up to you.) and add a higher z-index value (for assurance) to keep them always on the top of the others.
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How to pretty-print a numpy.array without scientific notation and with given precision?
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['0.25276524', '2.283345', '-1.8822164', '0.69949927', '1.0285625']
The index of the array is accessible in the format string:
>>> ndprint(x, 'Element[{1:d}]={0:.2f}')
['Element[0]=0.25', 'Element[1]=2.28', 'Element[2]=-1.88', 'Element[3]=0.70', 'Element[4]=1.03']
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