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Is there a regular expression to detect a valid regular expression?
...group start
(?:
(?:[^?+*{}()[\]\\|]+ # literals and ^, $
| \\. # escaped characters
| \[ (?: \^?\\. | \^[^\\] | [^\\^] ) # character classes
(?: [^\]\\]+ | \\. )* \]
| \( (?:\?[:=!]|\?<[=!]|\?>)? (?1)?? ...
How to calculate a mod b in Python?
... edited Jul 28 '19 at 15:58
wjandrea
12.3k55 gold badges2424 silver badges4747 bronze badges
answered Jun 14 '09 at 10:58
...
Load RSA public key from file
...ion when I tried with files I generated with ssh-keygen -t rsa -b 2048 command. With files generated with the commands in the solution it worked.
– Kristóf Dombi
Aug 10 '15 at 18:36
...
What are the minimum margins most printers can handle?
...ng real estate is a must but at the same time ensuring users printers can handle the tight margins is a must.
5 Answers
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Why can't I use a list as a dict key in python?
...nt's values, for instance when checking (in-)equality. Many would - understandably - expect that you can use any list [1, 2] to get the same key, where you'd have to keep around exactly the same list object. But lookup by value breaks as soon as a list used as key is modified, and for lookup by iden...
How do I resolve cherry-pick conflicts using their changes?
...tried this exactly: git cherry-pick --strategy=recursive -X theirs 1b92440 and I'm still prompted for an unresolved conflict: Unmerged paths: deleted by them: (file path). Any idea?
– pilau
Aug 2 '13 at 10:41
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Object of custom type as dictionary key
...
You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...
Set attributes from dictionary in python
...ed Mar 17 '10 at 21:57
Ian ClellandIan Clelland
38.1k77 gold badges7575 silver badges8383 bronze badges
...
Why does an overridden function in the derived class hide other overloads of the base class?
...ding happens, people who respond either say that this called "name hiding" and explain how it works (which you probably already know), or explain how to override it (which you never asked about), but nobody seems to care to address the actual "why" question.
The decision, the rationale behind the n...
Updating and committing only a file's permissions using git version control
...file mode.
Look into your project, in the .git folder for the config file and you should see something like this:
[core]
filemode = false
You can either change it to true in your favorite text editor, or run:
git config core.filemode true
Then, you should be able to commit normally your f...