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Use of 'prototype' vs. 'this' in JavaScript?
...e [[Prototype]] property.
A function's this is set by how the function is called or by the use of bind (not discussed here). Where a function is called on an object (e.g. myObj.method()) then this within the method references the object. Where this is not set by the call or by the use of bind, it de...
Suppress Scientific Notation in Numpy When Creating Array From Nested List
...-printing-in-numpy.html
For SciPy.org numpy documentation, which includes all function parameters (suppress isn't detailed in the above link), see here: https://docs.scipy.org/doc/numpy/reference/generated/numpy.set_printoptions.html
...
Difference between private, public, and protected inheritance
All of the questions I've found on SO deal with specific cases.
16 Answers
16
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Android: upgrading DB version and adding new table
...
1. About onCreate() and onUpgrade()
onCreate(..) is called whenever the app is freshly installed. onUpgrade is called whenever the app is upgraded and launched and the database version is not the same.
2. Incrementing the db version
You need a constructor like:
MyOpenHelp...
How to get the last N records in mongodb?
...need to sort in ascending order.
Assuming you have some id or date field called "x" you would do ...
.sort()
db.foo.find().sort({x:1});
The 1 will sort ascending (oldest to newest) and -1 will sort descending (newest to oldest.)
If you use the auto created _id field it has a date embedded in...
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
...lementation of hitTest:withEvent: in UIResponder does the following:
It calls pointInside:withEvent: of self
If the return is NO, hitTest:withEvent: returns nil. the end of the story.
If the return is YES, it sends hitTest:withEvent: messages to its subviews.
it starts from the top-level subview, ...
get dictionary key by value
... value happens to be at the end of the dictionary, it will have to go over all the other values to find it. If you have a number of entries, this will slow your program down.
– Zach Johnson
Mar 14 '10 at 22:41
...
Same Navigation Drawer in different Activities
...Config);
drawerToggle.onConfigurationChanged(newConfig);
}
}
All the other Activities that needs to have a navigation drawer should extend this Activity instead of Activity itself, example:
public class AnyActivity extends BaseActivity
{
//Because this activity extends BaseActivit...
Why would you use an ivar?
I usually see this question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q).
...
Disabling browser print options (headers, footers, margins) from page?
...t consistent. Safari still does not support setting printer page margin at all, but all the other major browsers now support it.
With the @page directive, you can specify printer margin of the page (which is not the same as normal CSS margin of an HTML element):
<html xmlns="http://www.w3.org/199...