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What is the purpose of the single underscore “_” variable in Python?
...Note that in the cpython shell if you explicitly define _, it permanently stops holding the output value of the previous expression. This seems horribly inconsistent, and the Python lang standards need to address this. They should just define _ to be a throwaway name and stop it from being used as a...
Build tree array from flat array in javascript
...n (it'll be empty if the node is a leaf node)
– Christopher
Apr 12 '16 at 10:20
2
Your code snipp...
Python matplotlib multiple bars
...e going to be wrong. You should either use a stacked bar chart (colours on top of each other) or group by date (a "fake" date on the x-axis, basically just grouping the data points).
import numpy as np
import matplotlib.pyplot as plt
N = 3
ind = np.arange(N) # the x locations for the groups
width...
How can I produce an effect similar to the iOS 7 blur view?
...ion, and they've added an "All Rights Reserved" copyright statement at the top.
– Mark Erdmann
Aug 14 '13 at 0:32
...
How can I easily view the contents of a datatable or dataview in the immediate window
... yet, but I can't work without the previous one in Visual Studio 2003.
on top of displaying DataSet hierarchically, there are also a lot of other handy features such as filtering and selecting the RowState which you want to view.
...
Generate random numbers following a normal distribution in C/C++
...if SO made downvotes force a real comment..I suspect most downvotes of old topics are just frivolous and trolly.
– Pete855217
Nov 18 '13 at 23:35
...
Why is there no String.Empty in Java?
...ignored the rule and now it's kind of too late. Here are a few examples on top of my head, feel free to chip in your "favorite" example:
BigDecimal.ZERO, but no AbstractCollection.EMPTY, String.EMPTY
Array.length but List.size()
List.add(), Set.add() but Map.put(), ByteBuffer.put() and let's not f...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...t in red rectangles. Since we know their id in memory it is quite easy.
Stop app using Debug View Hierarchy:
Find the proper UIView:
The next is to find NSLayoutConstraint we care about:
As you can see, the memory pointers are the same. So we know what is going on now. Additionally y...
namespaces for enum types - best practices
...
Advantage of using a class is that you can build a full-fledged class on top of it.
#include <cassert>
class Color
{
public:
typedef enum
{
Red,
Blue,
Green,
Yellow
} enum_type;
private:
enum_type _val;
public:
Color(enum_type val = Blu...
How do HttpOnly cookies work with AJAX requests?
... The "session" isn't an HTTP concept. It's an high level concept built on top of HTTP concepts by a framework.
– curiousguy
Nov 23 '18 at 4:28
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