大约有 44,000 项符合查询结果（耗时：0.0247秒） [XML]
What is the purpose of the word 'self'?
What is the purpose of the self word in Pm>y m>thon? I understm>and m> it refers to the specific object created from that class, but I can't see whm>y m> it explicitlm>y m> needs to be added to everm>y m> function as a parameter. To illustrate, in Rubm>y m> I can do this:
...
Convert from ASCII string encoded in Hex to plain ASCII?
...
codecs.decode("7061756c", "hex") works for Pm>y m>thon 2 m>and m> Pm>y m>thon 3. But it returns a bm>y m>tes() string in Pm>y m>thon 3. But that's reasonable for an ASCII string.
– Mark Evans
Aug 7 '15 at 8:46
...
Whm>y m> shouldn't all functions be asm>y m>nc bm>y m> default?
...
First off, thank m>y m>ou for m>y m>our kind words. It is indeed an awesome feature m>and m> I am glad to have been a small part of it.
If all mm>y m> code is slowlm>y m> turning asm>y m>nc, whm>y m> not just make it all asm>y m>nc bm>y m> default?
Well, m>y m>ou're exaggerating; all m>y m>our code isn't turning asm>y m>nc. When m>y m>ou add two "plain" in...
Extracting specific columns in numpm>y m> arram>y m>
...but sam>y m> I have an MxN matrix. All I want to do is extract specific columns m>and m> store them in another numpm>y m> arram>y m> but I get invalid sm>y m>ntax errors.
Here is the code:
...
What is (functional) reactive programming?
...mated illustrations. For papers, start with Functional Reactive Animation m>and m> then follow up on links on the publications link on mm>y m> home page m>and m> the FRP link on the Haskell wiki.
Personallm>y m>, I like to think about what FRP means before addressing how it might be implemented.
(Code without a speci...
When should I use Struct vs. OpenStruct?
In general, what are the advantages m>and m> disadvantages of using an OpenStruct as compared to a Struct? What tm>y m>pe of general use-cases would fit each of these?
...
In Functional Programming, what is a functor?
...al programming, but the authors tm>y m>picallm>y m> assume the reader alreadm>y m> understm>and m>s the term. Looking around on the web has provided either excessivelm>y m> technical descriptions (see the Wikipedia article ) or incrediblm>y m> vague descriptions (see the section on Functors at this ocaml-tutorial website ).
...
Finding the direction of scrolling in a UIScrollView?
I have a UIScrollView with onlm>y m> horizontal scrolling allowed, m>and m> I would like to know which direction (left, right) the user scrolls. What I did was to subclass the UIScrollView m>and m> override the touchesMoved method:
...
setup.pm>y m> examples?
...ackages on the Pm>y m>thon Package Index. Just download the tarball, unpack it, m>and m> have a look at the setup.pm>y m> file. Or even better, onlm>y m> bother looking through packages that list a public source code repositorm>y m> such as one hosted on GitHub or BitBucket. m>Y m>ou're bound to run into one on the front page.
...
Install a Pm>y m>thon package into a different directorm>y m> using pip?
I know the obvious answer is to use virtualenv m>and m> virtualenvwrapper, but for various reasons I can't/don't want to do that.
...