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How do you effectively model inheritance in a database?
...ly the different elements.
So for example:
class Person {
public int ID;
public string FirstName;
public string LastName;
}
class Employee : Person {
public DateTime StartDate;
}
Would result in tables like:
table Person
------------
int id (PK)
string firstname
string lastname...
jQuery changing style of HTML element
... answered Apr 18 '13 at 14:51
VoidKingVoidKing
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How can I sort arrays and data in PHP?
... until the array is sorted. The cmp function will be called many times, at least as many times as there are values in $array, with different combinations of values for $a and $b every time.
To get used to this idea, try this:
function cmp($a, $b) {
echo 'cmp called with $a:', PHP_EOL;
var_du...
MySQL Select Date Equal to Today
...
SELECT users.id, DATE_FORMAT(users.signup_date, '%Y-%m-%d')
FROM users
WHERE DATE(signup_date) = CURDATE()
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Set Focus on EditText
....close();
When you close the database connection, the Cursor becomes invalid and most probably is nulled.
So close the database after you've fetched the value.
Instead of checking the cursor for null, you should check if the number of rows returned are more than 0: if(cursor.getCount() > 0) an...
How to copy an object in Objective-C
...es the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally independent" from it's original. Because the mechanisms for making these "intelligent" copies varies from class to class, we ask the ...
Is Redis just a cache?
...ect can be modeled as a Map. For example, a Question is a map with fields {id, title, date_asked, votes, asked_by, status}. Similarly, an Answer is a map with fields {id, question_id, answer_text, answered_by, votes, status}. Similarly, we can model a user object.
Each of these objects can be direc...
nodeValue vs innerHTML and textContent. How to choose?
... text, does not parse HTML, and is faster.
innerText Takes styles into consideration. It won't get hidden text for instance.
innerText didn't exist in firefox until FireFox 45 according to caniuse but is now supported in all major browsers.
...
How to Reverse Fragment Animations on BackStack?
...
According to the android documentation for custom animation:
Change:
ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out);
To:
ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out, R.anim.hyperspace_in, R.anim.slide_out );
...
When to use @QueryParam vs @PathParam
...ing up on general REST documentation and blog posts should give you some guidelines for a good way to structure API URLs. Most rest APIs tend to only have resource names and resource IDs in the path. Such as:
/departments/{dept}/employees/{id}
Some REST APIs use query strings for filtering, pagin...