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How to design a product table for many kinds of product where each product has many parameters
...urther If you would like to improve the performance of the queries you can select certain operations like for e.g. reporting or global text search and prepare for them index tables which would store required data and would be regenerated periodically, lets say every 30 minutes.
You don't even need ...
How to handle Handler messages when activity/fragment is paused
...iving an Intent(message) that was sent to your app in general. To increase selectivity on what type of intents your fragment can receive you can use an intent filter as in the example below.
An advantage of this approach is that the Intent(message) can be sent from everywhere whithin your app(a d...
Understanding REST: Verbs, error codes, and authentication
...w Session ID, or leave any residue on the server. The GET verb is like the SELECT statement in a database engine. Remember that the response to any request with the GET verb should be cache-able when requested with the same parameters, just like when you request a static web page.
Point 3: How to...
How do I list all files of a directory?
...'work.txt', '3ebooks.txt', 'documents']
glob
I found glob easier to select the file of the same type or with something in common. Look at the following example:
import glob
txtfiles = []
for file in glob.glob("*.txt"):
txtfiles.append(file)
glob with list comprehension
import glo...
Multi-key dictionary in c#? [duplicate]
...Values
from baseKey in baseDict.Keys
select baseDict[baseKey];
}
}
}
public class MultiKeyDictionary<K1, K2, K3, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, V>> {
public V this[K1 key1, K2 key2, K3 key3] {
get {
...
Reset/remove CSS styles for element only
...ion: unset;
user-focus: unset;
user-input: unset;
user-modify: unset;
user-select: unset;
vector-effect: unset;
vertical-align: unset;
visibility: unset;
white-space: unset;
width: unset;
will-change: unset;
window-dragging: unset;
word-break: unset;
word-spacing: unset;
word-wrap: unset;
writing-mo...
Why would I use Scala/Lift over Java/Spring? [closed]
...scaling, which prevented Lift from being a solution in my case. I ended up selecting http://www.playframework.org/ and have been very pleased. Play has been stable and reliable so far and very easy to work with.
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Fluid width with equally spaced DIVs
...g
.box1, .box2, .box3, .box4 { ...
to
#container > div { ...
This selects any div that is the first child of the #container div, and no others below it. To generalize the background colors, you can use the CSS3 nth-order selector, although it's only supported in IE9+ and other modern browse...
PHP global in functions
... parameter.
function getCustomer($db, $id) {
$row = $db->fetchRow('SELECT * FROM customer WHERE id = '.$db->quote($id));
return $row;
}
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boost::flat_map and its performance compared to map and unordered_map
...tion for these cases, using partial template specializations, or SFINAE to select algorithms according to traits of T.
About the flat map
Apparently the flat map is a sorted vector wrapper, like Loki AssocVector, but with some supplementary modernizations coming with C++11, exploiting move semanti...