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Oracle PL/SQL - How to create a simple array variable?
...mething
END LOOP;
END;
You could use an associative array (used to be called PL/SQL tables) as they are an in-memory array.
DECLARE
TYPE employee_arraytype IS TABLE OF employee%ROWTYPE
INDEX BY PLS_INTEGER;
employee_array employee_arraytype;
BEGIN
SELECT *
BULK COLLECT IN...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...NUM = 2;
final static int RECOMMENDER_NUM = 3;
public static void main(String[] args) throws IOException, TasteException {
String file = "datafile/item.csv";
DataModel model = new FileDataModel(new File(file));
UserSimilarity user = new EuclideanDistanceSimilar...
How to reference style attributes from a drawable?
...d your drawable to your theme.xml.
<style name="MyTheme" parent="@android:style/Theme.NoTitleBar">
<item name="my_drawable">@drawable/my_drawable</item>
</style>
Reference your drawable in your layout using your attribute.
<TextView android:background="?my_drawable"...
Specify JDK for Maven to use
...d binary compatiblility -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<targ...
Predicate in Java
...gher-order function
Predicate allows Iterables.filter to serve as what is called a higher-order function. On its own, this offers many advantages. Take the List<Integer> numbers example above. Suppose we want to test if all numbers are positive. We can write something like this:
static boole...
startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
FirstActivity.Java has a FragmentA.Java which calls startActivityForResult() .
SecondActivity.Java call finish() but onActivityResult never get called which is
written in FragmentA.Java .
...
Which is best way to define constants in android, either static class, interface or xml resource?
... that I might need to use in my XML or java code. On the other hand, I typically use static final constants for values that will only be used by my java code and are specific to my implementation.
Also note that it is possible to load XML resources at runtime depending on the device's current confi...
When would you call java's thread.run() instead of thread.start()?
When would you call Java's thread.run() instead of thread.start() ?
14 Answers
14
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Difference between Fact table and Dimension table?
...of star schema is to simplify a complex normalized set of tables and consolidate data (possibly from different systems) into one database structure that can be queried in a very efficient way.
On its simplest form, it contains a fact table (Example: StoreSales) and a one or more dimension tables. E...
How to make code wait while calling asynchronous calls like Ajax [duplicate]
...
Use callbacks. Something like this should work based on your sample code.
function someFunc() {
callAjaxfunc(function() {
console.log('Pass2');
});
}
function callAjaxfunc(callback) {
//All ajax calls called here
...