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What's the difference between the data structure Tree and Graph?
...will answer almost all your questions on trees and graphs.
References :
http://www.introprogramming.info/english-intro-csharp-book/read-online/chapter-17-trees-and-graphs/#_Toc362296541
http://www.community-of-knowledge.de/beitrag/data-trees-as-a-means-of-presenting-complex-data-analysis/
Wikiped...
Grid of responsive squares
...isplay: flex;
flex-wrap: wrap;
justify-content: center;
}
.square-grid__cell {
background-color: rgba(0, 0, 0, 0.03);
box-shadow: 0 0 0 1px black;
overflow: hidden;
position: relative;
}
.square-grid__content {
left: 0;
position: absolute;
top: 0;
}
.square-grid__cell:after {
...
Equivalent to 'app.config' for a library (DLL)
...
Correction to my last comment. In my VS2017 solution, by removing my new, non-working App.config files from my test & DLL projects and just re-adding it to my test project it suddenly starting working! My App.config setting now automatically...
CSS Display an Image Resized and Cropped
...5px 0 0 -100px;
}
<div class="crop">
<img src="https://i.stack.imgur.com/wPh0S.jpg" alt="Donald Duck">
</div>
You can use negative margin to move the image around within the <div/>.
...
Dictionary vs Object - which is more efficient and why?
...
Have you tried using __slots__?
From the documentation:
By default, instances of both old and new-style classes have a dictionary for attribute storage. This wastes space for objects having very few instance variables. The space consumption can ...
Python memoising/deferred lookup property decorator
...
from boltons.cacheutils import cachedproperty
class Foo(object):
def __init__(self):
self.value = 4
@cachedproperty
def cached_prop(self):
self.value += 1
return self.value
f = Foo()
print(f.value) # initial value
print(f.cached_prop) # cached property is c...
How to detect if app is being built for device or simulator in Swift
...
Update 30/01/19
While this answer may work, the recommended solution for a static check (as clarified by several Apple engineers) is to define a custom compiler flag targeting iOS Simulators. For detailed instructions on how to do to it, see @mbelsky's answer.
Original answ...
Handling click events on a drawable within an EditText
... version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/myTextView"
android:layout_width="wrap_conte...
namedtuple and default values for optional keyword arguments
...Node()
Node(val=None, left=None, right=None)
Before Python 3.7
Set Node.__new__.__defaults__ to the default values.
>>> from collections import namedtuple
>>> Node = namedtuple('Node', 'val left right')
>>> Node.__new__.__defaults__ = (None,) * len(Node._fields)
>&g...
How to get a function name as a string?
...
my_function.__name__
Using __name__ is the preferred method as it applies uniformly. Unlike func_name, it works on built-in functions as well:
>>> import time
>>> time.time.func_name
Traceback (most recent ...