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Best way of invoking getter by reflection
...n is part of the well-established JavaBeans specification and is supported by the classes in the java.beans package.
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Pandas percentage of total with groupby
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Paul H's answer is right that you will have to make a second groupby object, but you can calculate the percentage in a simpler way -- just groupby the state_office and divide the sales column by its sum. Copying the beginning of Paul H's answer:
# From Paul H
import numpy as np
import pand...
Accessing Object Memory Address
...al question? The answer posted here is recreating the address as requested by the original question. Wouldn't you have to string mangle if you did it the way you suggest?
– Rafe
Mar 13 '17 at 20:03
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Naming of ID columns in database tables
... +1 Columns that are synonymous should have the same name - by using the table name prefix you can have a primary key column called table1ID and a foreign key column in another table called table1ID - and you KNOW that they are the same thing. I was taught this 20 years ago and its a...
Set select option 'selected', by value
...;option value="7">Refunded</option>
Setting to Pending Status by value
$('#contribution_status_id').val("2");
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Count with IF condition in MySQL query
...s`.`category` = 'news_layer2'
AND `ccc_news`.`status` = 'Active'
GROUP BY
ccc_news.news_id
ORDER BY
ccc_news.set_order ASC
LIMIT 20
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How to prevent custom views from losing state across screen orientation changes
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You do this by implementing View#onSaveInstanceState and View#onRestoreInstanceState and extending the View.BaseSavedState class.
public class CustomView extends View {
private int stateToSave;
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@Override
public Parcelable...
Throw an error in a MySQL trigger
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Unfortunately, the answer provided by @RuiDC does not work in MySQL versions prior to 5.5 because there is no implementation of SIGNAL for stored procedures.
The solution I've found is to simulate a signal throwing a table_name doesn't exist error, pushing a ...
Same Navigation Drawer in different Activities
...ty with exactly the same id.
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle((Activity) this, drawerLayout, R.drawable.ic_drawer, 0, 0)
{
public void onDrawerClosed(View view)
{
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How to change spinner text size and text color?
... @vilpe89 could you modify your above code to show what you mean by this? where does this android:id go? certainly not in the spinner tag, because it has it's own id. but it doesn't make sense to add it in the textview tag you have created above. how do i reference that i want to use t...