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Difference between View and table in sql
...ns data, a view is just a SELECT statement which has been saved in the database (more or less, depending on your database).
The advantage of a view is that it can join data from several tables thus creating a new view of it. Say you have a database with salaries and you need to do some complex stat...
How to pass the values from one activity to previous activity
... Intent(this,TextEntryActivity.class);
startActivityForResult(i, STATIC_INTEGER_VALUE);
Within the subactivity, rather than just closing the Activity when a user clicks the button, you need to create a new Intent and include the entered text value in its extras bundle. To pass it back to the p...
Create a Date with a set timezone without using a string representation
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@jishi—Date objects are based on a UTC time value, not local time. However, the default Date.prototype.toString method will display local time values.
– RobG
May 27 '13 at 5:54
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Which HTML elements can receive focus?
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Here I have a CSS-selector based on bobince's answer to select any focusable HTML element:
a[href]:not([tabindex='-1']),
area[href]:not([tabindex='-1']),
input:not([disabled]):not([tabindex='-1']),
select:not([disabled]):not([tabindex='-1']),
...
ActiveRecord.find(array_of_ids), preserving order
...ccording to the original list of IDs you used when looking up the record.
Based on the many excellent answers to Sort an array according to the elements of another array, I recommend the following solution:
Something.find(array_of_ids).sort_by{|thing| array_of_ids.index thing.id}
Or if you need ...
How do I convert a decimal to an int in C#?
...nd thus can be understood to be able to truncate even numbers that are not base 10, as opposed to Decimal.Truncate, which is a true truncation of a base 10 number.
– Brian
Jun 24 '09 at 20:55
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How do I escape ampersands in batch files?
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From a cmd:
& is escaped like this: ^& (based on @Wael Dalloul's answer)
% does not need to be escaped
An example:
start http://www.google.com/search?client=opera^&rls=en^&q=escape+ampersand%20and%20percentage+in+cmd^&sourceid=opera^&ie=utf-8^&am...
How do I install a custom font on an HTML site
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Try this
@font-face {
src: url(fonts/Market_vilis.ttf) format("truetype");
}
div.FontMarket {
font-family: Market Deco;
}
<div class="FontMarket">KhonKaen Market</div>
vilis.org
...
How to do exponentiation in clojure?
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You can use java's Math.pow or BigInteger.pow methods:
(Math/pow base exponent)
(.pow (bigint base) exponent)
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Is it possible to allow didSet to be called during initialization in Swift?
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This works if you do this in a subclass
class Base {
var someProperty: AnyObject {
didSet {
doStuff()
}
}
required init() {
someProperty = "hello"
}
func doStuff() {
print(someProperty)
}
}
class SomeClass: Base {
required init() ...