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How can I convert an RGB image into grayscale in Python?
...ad('image.png')
gray = rgb2gray(img)
plt.imshow(gray, cmap=plt.get_cmap('gray'), vmin=0, vmax=1)
plt.show()
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Test if object implements interface
...ckListener,
OnCheckedChangeListener {
public static final String FIRST_RUN_ABOUT = "com.gosylvester.bestrides.firstrunabout";
public interface AboutDialogListener {
void onFinishEditDialog(Boolean _Checked);
}
private AboutDialogListener adl;
@Override
public View onCreateView(LayoutInf...
List of Big-O for PHP functions
... though and either via benchmark or code-skimming to characterize the array_* functions. I've tried to put the more interesting Big-O near the top. This list is not complete.
Note: All the Big-O where calculated assuming a hash lookup is O(1) even though it's really O(n). The coefficient of the n i...
Join/Where with LINQ and Lambda
...1;
var query =
from post in database.Posts
join meta in database.Post_Metas on post.ID equals meta.Post_ID
where post.ID == id
select new { Post = post, Meta = meta };
If you're really stuck on using lambdas though, your syntax is quite a bit off. Here's the same query, using the LINQ ...
What is the difference between t.belongs_to and t.references in rails?
What is the difference between t.references and t.belongs_to ?
Why are we having those two different words? It seems to me they do the same thing?
Tried some Google search, but find no explanation.
...
mysqli or PDO - what are the pros and cons? [closed]
...ing, it's REALLY cool :
class Student {
public $id;
public $first_name;
public $last_name
public function getFullName() {
return $this->first_name.' '.$this->last_name
}
}
try
{
$dbh = new PDO("mysql:host=$hostname;dbname=school", $username, $password)
...
Scala downwards or decreasing for loop?
... answered May 13 '14 at 21:54
LP_LP_
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...
Check to see if python script is running
...stem is using domain sockets:
import socket
import sys
import time
def get_lock(process_name):
# Without holding a reference to our socket somewhere it gets garbage
# collected when the function exits
get_lock._lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
try:
...
Significance of -pthread flag when compiling
... with %{pthread:.
On my computer, this causes files to be compiled with -D_REENTRANT, and linked with -lpthread. On other platforms, this could differ. Use -pthread for most portability.
Using _REENTRANT, on GNU libc, changes the way some libc headers work. As a specific example, it makes errno ca...
How to create standard Borderless buttons (like in the design guideline mentioned)?
...ike in the right picture above).
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_alignParentBottom="true">
<View
android:layout_width="match_parent"
android:layout_height="1dip"
...