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Get Root Directory Path of a PHP project
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For PHP >= 5.3.0 try
PHP magic constants.
__DIR__
And make your path relative.
For PHP < 5.3.0 try
dirname(__FILE__)
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How do I use raw_input in Python 3
I am using Python 3.1 and can't get the raw_input to "freeze" the dos pop-up. The book I'm reading is for Python 2.5 and I'm using Python 3.1
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Why use Abstract Base Classes in Python?
...igher-level, semantic promises in the contract.
For example, if there is a __str__() method, it is expected to return a string representation of the object. It could delete all contents of the object, commit the transaction and spit a blank page out of the printer... but there is a common understand...
Is it safe to push_back an element from the same vector?
If the second push_back causes a reallocation, the reference to the first integer in the vector will no longer be valid. So this isn't safe?
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How does deriving work in Haskell?
... Haskell Wiki:
In this example we use the following Haskell code
$(gen_render ''Body)
to produce the following instance:
instance TH_Render Body where
render (NormalB exp) = build 'normalB exp
render (GuardedB guards) = build 'guardedB guards
The function gen_render above is d...
remove None value from a list without removing the 0 value
... - it's just for scientific purposes)
>>> from operator import is_not
>>> from functools import partial
>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> filter(partial(is_not, None), L)
[0, 23, 234, 89, 0, 35, 9]
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Is there a better way to express nested namespaces in C++ within the header
...ry rare cases in C++ where I actually like the use of #defines.
#define MY_COMPANY_BEGIN namespace MyCompany { // begin of the MyCompany namespace
#define MY_COMPANY_END } // end of the MyCompany namespace
#define MY_LIBRARY_BEGIN namespace MyLibrary { // begin of the MyLib...
Python class inherits object
...ss ClassicSpam: # no base class
... pass
>>> ClassicSpam.__bases__
()
"new" style classes: they have, directly or indirectly (e.g inherit from a built-in type), object as a base class:
>>> class NewSpam(object): # directly inherit from object
... pass
>&g...
Parse config files, environment, and command-line arguments, to get a single collection of options
...antage, because users will only have to learn one syntax.) Setting fromfile_prefix_chars to, for example, @, makes it so that,
my_prog --foo=bar
is equivalent to
my_prog @baz.conf
if @baz.conf is,
--foo
bar
You can even have your code look for foo.conf automatically by modifying argv
if o...
In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
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You're right. As the official documentation explains:
__autoreleasing to denote arguments that are passed by reference (id *) and are autoreleased on return.
All of this is very well explained in the ARC transition guide.
In your NSError example, the declaration means __stron...