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Chaining multiple MapReduce jobs in Hadoop
...e the JobClient.runJob(). The output path of the data from the first job becomes the input path to your second job. These need to be passed in as arguments to your jobs with appropriate code to parse them and set up the parameters for the job.
I think that the above method might however be the way t...
Saving and Reading Bitmaps/Images from Internal memory in Android
...
fos = new FileOutputStream(mypath);
// Use the compress method on the BitMap object to write image to the OutputStream
bitmapImage.compress(Bitmap.CompressFormat.PNG, 100, fos);
} catch (Exception e) {
e.printStackTrace();
} final...
How do I unload (reload) a Python module?
...r process itself.
To quote from the docs:
Python modules’ code is recompiled and
the module-level code reexecuted,
defining a new set of objects which
are bound to names in the module’s
dictionary. The init function of
extension modules is not called a
second time. As with all o...
Benchmarking small code samples in C#, can this implementation be improved?
...
Here is the modified function: as recommended by the community, feel free to amend this its a community wiki.
static double Profile(string description, int iterations, Action func) {
//Run at highest priority to minimize fluctuations caused by other proce...
How to delete or add column in SQLITE?
...QLite
SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a column, remove a column, or add or remove constraints from a table.
You can:
create new table...
How do I handle ImeOptions' done button click?
...
I ended up with a combination of Roberts and chirags answers:
((EditText)findViewById(R.id.search_field)).setOnEditorActionListener(
new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, i...
E11000 duplicate key error index in mongodb mongoose
...dexed field, the index build will fail with a duplicate key error.
You can combine the unique constraint with the sparse index to filter these null values from the unique index and avoid the error.
unique indexes
Sparse indexes only contain entries for documents that have the indexed field, even i...
Python - Get path of root project structure
...ctories as containing packages; this is done to prevent directories with a common name, such as string, from unintentionally hiding valid modules that occur later on the module search path. In the simplest case, __init__.py can just be an empty file, but it can also execute initialization code for t...
Effective method to hide email from spam bots
...
community wiki
4 revscyptus
...
Scanner vs. StringTokenizer vs. String.Split
I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...