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What's the state of the art in email validation for Rails?
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Err, won't that barf on .museum and the new international TLDs? This regex would prevent many valid email addresses.
– Elijah
Mar 27 '11 at 19:51
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Create a unique number with javascript time
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If you just want a unique-ish number, then
var timestamp = new Date().getUTCMilliseconds();
would get you a simple number. But if you need the readable version, you're in for a bit of processing:
var now = new Date();
timestamp = now.getFullYear().toString(); // 2011
timestamp +=...
How can I round down a number in Javascript?
...checking my work.
Here's the code I used to test:
var a = [];
var time = new Date().getTime();
for( i = 0; i < 100000; i++ ) {
//a.push( Math.random() * 100000 | 0 );
a.push( Math.floor( Math.random() * 100000 ) );
}
var elapsed = new Date().getTime() - time;
alert( "elapsed time: " + ...
How to resize images proportionally / keeping the aspect ratio?
...ratio for scaling image
$(this).css("width", maxWidth); // Set new width
$(this).css("height", height * ratio); // Scale height based on ratio
height = height * ratio; // Reset height to match scaled image
width = width * ratio; // Reset width t...
Best way to store date/time in mongodb
...bjects.
> db.test.insert({date: ISODate()})
> db.test.insert({date: new Date()})
> db.test.find()
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:42.389Z") }
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:57.240Z") }
The native type supports a whole range of ...
What happens when a duplicate key is put into a HashMap?
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The prior value for the key is dropped and replaced with the new one.
If you'd like to keep all the values a key is given, you might consider implementing something like this:
import org.apache.commons.collections.MultiHashMap;
import java.util.Set;
import java.util.Map;
import java....
How to delete an SMS from the inbox in Android programmatically?
...e.obj;
getContentResolver().delete(deleteUri, "address=? and date=?", new String[] {msg.getOriginatingAddress(), String.valueOf(msg.getTimestampMillis())});
I use the originating address and timestamp field to ensure a very high probability of deleting ONLY the message I am interested in. If...
How to remove duplicate white spaces in string using Java?
How to remove duplicate white spaces (including tabs, newlines, spaces, etc...) in a string using Java?
9 Answers
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How to take all but the last element in a sequence using LINQ?
...urce.GetEnumerator();
bool hasRemainingItems = false;
var cache = new Queue<T>(n + 1);
do {
if (hasRemainingItems = it.MoveNext()) {
cache.Enqueue(it.Current);
if (cache.Count > n)
yield return cache.Dequeue();
}
} wh...
Advantages of Binary Search Trees over Hash Tables
...ic approach.
– ady
Dec 11 '13 at 10:51
4
wow this really explains why trees are so associated wit...