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Understanding the difference between __getattr__ and __getattribute__
I am trying to understand the difference between __getattr__ and __getattribute__ , however, I am failing at it.
4 Answe...
How to pretty-print a numpy.array without scientific notation and with given precision?
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You can use set_printoptions to set the precision of the output:
import numpy as np
x=np.random.random(10)
print(x)
# [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732
# 0.51303098 0.4617183 0.33487207 0.7116209...
What is the fastest way to get the value of π?
...ically, I'm using ways that don't involve using #define constants like M_PI , or hard-coding the number in.
22 Answers
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Get the name of the currently executing method
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Even better than my first answer you can use __method__:
class Foo
def test_method
__method__
end
end
This returns a symbol – for example, :test_method. To return the method name as a string, call __method__.to_s instead.
Note: This requires Ruby 1.8.7.
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Ruby send vs __send__
I understand the concept of some_instance.send but I'm trying to figure out why you can call this both ways. The Ruby Koans imply that there is some reason beyond providing lots of different ways to do the same thing. Here are the two examples of usage:
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MFC CSplitterWnd的用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...rWnd类的Create或CreateStatic（）函数；
例子：
CSplitterWnd m_wndSplitter;
BOOL CChildFrame::OnCreateClient( LPCREATESTRUCT lpcs,
CCreateContext* pContext)
{
BOOL bCreateSpltr = m_wndSplitter.CreateStatic( this, 2, 1);
// COneView and CAnotherView are use...
How to reliably open a file in the same directory as a Python script
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I always use:
__location__ = os.path.realpath(
os.path.join(os.getcwd(), os.path.dirname(__file__)))
The join() call prepends the current working directory, but the documentation says that if some path is absolute, all other paths lef...
ES6 class variable alternatives
...ilar to the pattern of having $ at the beginning of variables that so many PHP programmers are used to. Just that little implication that "yeah, it's not the same exact thing...but look...it's still a variable because that is a way variables are done in some languages!" helps.
–...
Is it possible to force Excel recognize UTF-8 CSV files automatically?
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that's solved my issue too , in php it looks like this: $utf8_with_bom = chr(239) . chr(187) . chr(191) . $csvText;
– Abdullah
Dec 31 '13 at 7:09
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...code.
But for more modern, non standard, optional interpreters like Perl, PHP, Python, or Ruby, it's not really specified anywhere where they should be located. They may be in /usr/bin but they may as well be in /usr/local/bin or in a completely different hierarchy branch (/opt/..., /Applications/....