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When is it practical to use Depth-First Search (DFS) vs Breadth-First Search (BFS)? [closed]
... of solutions (aka searched-for items).
If you know a solution is not far from the root of the tree, a
breadth first search (BFS) might be better.
If the tree is very deep and solutions are rare, depth first search
(DFS) might take an extremely long time, but BFS could be faster.
If the tree is v...
Is it safe to delete a void pointer?
...native (delete
object), if the static type of the
operand is different from its dynamic
type, the static type shall be a base
class of the operand’s dynamic type
and the static type shall have a
virtual destructor or the behavior is
undefined. In the second alternative
(delete arr...
How do I get the object if it exists, or None if it does not exist?
...
From django docs
get() raises a DoesNotExist exception if an object is not found for the given parameters. This exception is also an attribute of the model class. The DoesNotExist exception inherits from django.core.exce...
Unix command to find lines common in two files
I'm sure I once found a unix command which could print the common lines from two or more files, does anyone know its name? It was much simpler than diff .
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How to provide animation when calling another activity in Android?
...im.fade_out);
API 3+:
You can prevent the default animation (Slide in from the right) with the Intent.FLAG_ACTIVITY_NO_ANIMATION flag in your intent.
i.e.:
Intent myIntent = new Intent(context, MyActivity.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
context.startActivity(myIn...
Automatic prune with Git fetch or pull
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To accommodate users who want to either prune always or when fetching from a particular remote, add two new configuration variables "fetch.prune" and "remote.<name>.prune":
"fetch.prune" allows to enable prune for all fetch operations.
"remote.<name>.prune" allows to chang...
Remove xticks in a matplotlib plot?
...ke this. This code turns off major and minor ticks and removes the labels from the x-axis.
from matplotlib import pyplot as plt
plt.plot(range(10))
plt.tick_params(
axis='x', # changes apply to the x-axis
which='both', # both major and minor ticks are affected
bottom=Fals...
Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
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Dashes don't need to be removed from HTTP request as you can see in URL of this thread.
But if you want to prepare well-formed URL without dependency on data you should use URLEncoder.encode( String data, String encoding ) instead of changing standard form ...
How to process each line received as a result of grep command
I have a number of lines retrieved from a file after running the grep command as follows:
7 Answers
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How do I get monitor resolution in Python?
...
On Windows:
from win32api import GetSystemMetrics
print("Width =", GetSystemMetrics(0))
print("Height =", GetSystemMetrics(1))
If you are working with high resolution screen, make sure your python interpreter is HIGHDPIAWARE.
Based o...