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Why would you use an ivar?
...in order to do the right thing.
Binary Size
Declaring everything readwrite by default usually results in many accessor methods you never need, when you consider your program's execution for a moment. So it will add some fat to your program and load times as well.
Minimizes Complexity
In some cases, ...
How to use DISTINCT and ORDER BY in same SELECT statement?
...
The problem is that the columns used in the ORDER BY aren't specified in the DISTINCT. To do this, you need to use an aggregate function to sort on, and use a GROUP BY to make the DISTINCT work.
Try something like this:
SELECT DISTINCT Category, MAX(CreationDate)
FROM Mon...
What is hashCode used for? Is it unique?
...tifier for hashing purposes.
The GetHashCode method can be overridden by a derived type. Value
types must override this method to provide a hash function that is
appropriate for that type and to provide a useful distribution in a
hash table. For uniqueness, the hash code must be based on ...
Find which commit is currently checked out in Git
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
How to show changed file name only with git log? [duplicate]
...iles without author, date or commit message info
– Labynocle
Mar 26 '14 at 14:59
That's pretty much exactly what I was...
Convert JS Object to form data
...
@Lior - item is a regular object created by the OP, so it shouldn't have any properties that are not it's own, unless someone made the mistake of prototyping something onto the Object constructor, in which case you would be in a world of trouble, and it's not someth...
LIMIT 10..20 in SQL Server
... is not part of standard SQL. It's supported as a vendor extension to SQL by MySQL, PostgreSQL, and SQLite.
Other brands of database may have similar features (e.g. TOP in Microsoft SQL Server), but these don't always work identically.
It's hard to use TOP in Microsoft SQL Server to mimic the L...
What is the advantage to using bloom filters?
...s too high, each
time we add about 4.8 bits per element
we decrease it by ten times.
Pretty clear to me.
A bloom filter doesn't store the elements themselves, this is the crucial point. You don't use a bloom filter to test if an element is present, you use it to test whether it's certainly no...
open a url on click of ok button in android
...
Button imageLogo = (Button)findViewById(R.id.iv_logo);
imageLogo.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String url = "http://www.goblogg...
How can I add comments in MySQL?
... column can be specified with the COMMENT option. The comment is displayed by the SHOW CREATE TABLE and SHOW FULL COLUMNS statements. This option is operational as of MySQL 4.1. (It is allowed but ignored in earlier versions.)"
As an example
--
-- Table structure for table 'accesslog'
--
CREATE T...