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ActiveRecord: size vs count
...o go if you are using the data.
Example: Summary of a fully loaded table, titles of displayed data, etc.
size
It checks if the data was loaded (i.e. already in rails) if so, then just count it, otherwise it calls count. (plus the pitfalls, already mentioned in other entries).
def size
loaded? ...
Android. Fragment getActivity() sometimes returns null
...ss MyActivity extends FragmentActivity{
private ViewPager pager;
private TitlePageIndicator indicator;
private TabsAdapter adapter;
private Bundle savedInstanceState;
@Override
public void onCreate(Bundle savedInstanceState) {
....
this.savedInstanceState = savedInstanceState;
page...
Can I have an IF block in DOS batch file?
...&& (conditional to errorlevel 0) as command separators.
I fixed a script snippet with this trick, to summarize, I have three batch files, one which calls the other two after having found which letters the external backup drives have been assigned. I leave the first file on the primary exter...
Creating a jQuery object from a big HTML-string
...r.
var cheerio = require('cheerio'),
$ = cheerio.load('<h2 class="title">Hello world</h2>');
$('h2.title').text('Hello there!');
$('h2').addClass('welcome');
$.html();
//=> <h2 class="title welcome">Hello there!</h2>
...
Laravel Eloquent: How to get only certain columns from joined tables
...= 5.2
Use the ->pluck() method
$roles = DB::table('roles')->pluck('title');
If you would like to retrieve an array containing the values of a single column, you may use the pluck method
For Laravel <= 5.1
Use the ->lists() method
$roles = DB::table('roles')->lists('title'...
How can I change the color of my prompt in zsh (different from normal text)?
...s it in some other zsh initialization file. You should still include it in scripts you intend to share with others.
– kindall
Aug 19 '19 at 22:33
...
Modifying a query string without reloading the page
... a photo gallery, and would like to be able to change the query string and title when the photos are browsed.
5 Answers
...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...New[Flatten[ImageData[thumb], 1], .1, 2, .2,
List @@ background, .5];
title = highlights[[1]];
songs = highlights[[2]];
The tolerance values above are as follows: .1 is the minimum difference between "separate" colors; .2 is the minimum difference between numerous dominant colors (A lower val...
Where is Python's sys.path initialized from?
...nitial values
that are to be contained in sys.path.
The directory of the script which python is executing is added to sys.path.
On Windows, this is always the empty string, which tells python to
use the full path where the script is located instead.
The contents of PYTHONPATH environment variable,...
How do I pull my project from github?
...ion. This will open up the SSH key page. Click on the New SSH key. In the "Title" field, add a descriptive label for the new key. Paste your key into the "Key" field.
Clone the Repository
Open VS Code (or any IDE/CLI which has command prompt etc.). Go to the directory in which you want to clone, us...