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relative path in require_once doesn't work
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Use
__DIR__
to get the current path of the script and this should fix your problem.
So:
require_once(__DIR__.'/../class/user.php');
This will prevent cases where you can run a PHP script from a different folder and therefo...
Split data frame string column into multiple columns
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Use stringr::str_split_fixed
library(stringr)
str_split_fixed(before$type, "_and_", 2)
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os.path.dirname(__file__) returns empty
...get the dirname of the absolute path, use
os.path.dirname(os.path.abspath(__file__))
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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...ble来管理全局变量的，Lua把这些全局变量放在了一个叫“_G”的Table里。我们可以用如下的方式来访问一个全局变量（假设我们这个全局变量名叫globalVar）：_G.globalVar
_G["globalVar"]复制代码
我们可以通过下面的方式来遍历...
Import a file from a subdirectory?
....org/tutorial/modules.html
In short, you need to put a blank file named
__init__.py
in the "lib" directory.
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What is the difference between class and instance attributes?
...> a.foo.append(5)
>>> b.foo
[5]
>>> class A:
... def __init__(self): self.foo = []
>>> a, b = A(), A()
>>> a.foo.append(5)
>>> b.foo
[]
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What is the __del__ method, How to call it?
I am reading a code. There is a class in which __del__ method is defined. I figured out that this method is used to destroy an instance of the class. However, I cannot find a place where this method is used. The main reason for that is that I do not know how this method is used, probably not like ...
What is __declspec and when do I need to use it?
I have seen instances of __declspec in the code that I am reading. What is it? And when would I need to use this construct?
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Multiple variables in a 'with' statement?
...Unlike the contextlib.nested, this guarantees that a and b will have their __exit__()'s called even if C() or it's __enter__() method raises an exception.
You can also use earlier variables in later definitions (h/t Ahmad below):
with A() as a, B(a) as b, C(a, b) as c:
doSomething(a, c)
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How do I check which version of NumPy I'm using?
...c Rodger: yeah, but your is more general to any module that cares to set a __version__.
– Esteban Küber
Oct 5 '09 at 14:13
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