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Maintain/Save/Restore scroll position when returning to a ListView
...blePosition() returns the top visible list item. But this item may be partially scrolled out of view, and if you want to restore the exact scroll position of the list you need to get this offset. So ListView.getChildAt(0) returns the View for the top list item, and then View.getTop() - mList.getPadd...
How to change node.js's console font color?
... var colors = require('colors/safe'); and then use colors.red('left string all alone')
– Laoujin
Apr 29 '15 at 20:20
1
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Fill remaining vertical space with CSS using display:flex
... <header>
header: sized to content
<br/>(but is it really?)
</header>
<div>
main content: fills remaining space<br> x
<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>
<!-- unc...
Multiple Inheritance in C#
...
@MrHappy: Very interesting article. I've actually investigated some way of Trait Composition for C#, take a look.
– Jordão
Mar 3 '12 at 3:32
10
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Append value to empty vector in R?
... avoided".
As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop.
Here are several ways to append values to a vector. All of them are discouraged.
Appending to a vector in a loop
# one way
for (i in 1:le...
How to allow keyboard focus of links in Firefox?
...
In System Preferences → Keyboard, in the Shortcuts pane, check the “all controls” radio at the bottom.
In Firefox, type "about:config" in the URL bar. There is no accessibility.tabfocus preference on the mac, so you'll have to make one. Right click in the window, create a new "integer" pref...
Populating a database in a Laravel migration file
...anges consistently so that you can for example deploy to staging, see that all is well, and then deploy to production with confidence of the same results (and not have to remember to run some manual step).
However, there is still value in separating out the seed and the migration as those are two r...
Copy a variable's value into another
...t.
Any change you make to the contents of this object will be seen identically whether you reference it through the a variable or the b variable. They are the same object.
So, when you later try to "revert" b to the original a object with this code:
b = a;
The code actually does nothing at all,...
How to create relationships in MySQL
In class, we are all 'studying' databases, and everyone is using Access. Bored with this, I am trying to do what the rest of the class is doing, but with raw SQL commands with MySQL instead of using Access.
...
How are people unit testing with Entity Framework 6, should you bother?
...tests.
Unfortunately your compromise here is speed. It takes time to run all these tests, to run all these setup/tear down scripts.
One final point, it can be very hard work to write such a large amount of SQL to test your ORM. This is where I take a very nasty approach (the purists here will dis...