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How to check if a string is a valid hex color representation?
...alues of a color.
If input is not a color, returns NULL, else returns an array of 4 values:
red (0-255), green (0-255), blue (0-255), alpha (0-1)
*/
function getRGBA(value) {
// get/create a 0 pixel element at the end of the document, to use to test properties against the client browser
var...
Hashing a string with Sha256
...en-us/library/system.text.encoding.unicode.aspx
If you inspect your bytes array, you'll see that every second byte is 0x00 (because of the double-wide encoding).
You should be using Encoding.UTF8.GetBytes instead.
But also, you will see different results depending on whether or not you consider t...
How to Truncate a string in PHP to the word closest to a certain number of characters?
... if ($length > $your_desired_width) { break; }
}
return implode(array_slice($parts, 0, $last_part));
}
Also, here is the PHPUnit testclass used to test the implementation:
class TokenTruncateTest extends PHPUnit_Framework_TestCase {
public function testBasic() {
$this->assertE...
Updating the list view when the adapter data changes
When the data associated with array adapter is changed, invalidating the listview is sufficient to show the updated values? Following piece of code is not working, did i misunderstood something here.?
...
private[this] vs private
...le
1.Without private[this]
object ObjectPrivateDemo {
def main(args: Array[String]) {
var real = new User("realUserName", "realPassword")
var guest = new User("dummyUserName", "dummyPassword")
real.displayUser(guest)
}
}
class User(val username:String,val password:String) {
p...
How do I create a URL shortener?
...ap the indices 2 and 1 to your alphabet. This is how your mapping (with an array for example) could look like:
0 → a
1 → b
...
25 → z
...
52 → 0
61 → 9
With 2 → c and 1 → b, you will receive cb62 as the shortened URL.
http://shor.ty/cb
How to resolve a shortened URL to the ini...
Create a GUID in Java
...factory to retrieve a type 3 (name based) UUID based on the specified byte array. "
– Stephen C
Oct 30 '15 at 10:33
I ...
Creating an R dataframe row-by-row
...for this to work (i.e., I'm assuming that you're not working with a ragged array whose greatest row length is unknown a priori).
This solution seems simple, but from my experience with type conversions in R, I'm sure it creates new challenges down-the-line. Can anyone comment on this?
...
How to style a JSON block in Github Wiki?
... Thanks for the hint, for some reason GitHub was making a simple JSON array unnecessarily ugly, now it's just fine :)
– Kilian
Aug 6 '14 at 21:37
add a comment
...
Access nested dictionary items via a list of keys?
...(dataDict):
ret = []
for k in keysInDict(dataDict):
v = np.array( getFromDict(dataDict, k), )
v = pd.DataFrame(v)
v.columns = pd.MultiIndex.from_product(list(k) + [v.columns])
ret.append(v)
return reduce(pd.DataFrame.join, ret)
...