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How do I append one string to another in Python?
...te another string to the end, CPython now special cases this and tries to extend the string in place.
The end result is that the operation is amortized O(n).
e.g.
s = ""
for i in range(n):
s+=str(i)
used to be O(n^2), but now it is O(n).
From the source (bytesobject.c):
void
PyBytes_Conca...
iOS: Multi-line UILabel in Auto Layout
...
Use -setPreferredMaxLayoutWidth on the UILabel and autolayout should handle the rest.
[label setPreferredMaxLayoutWidth:200.0];
See the UILabel documentation on preferredMaxLayoutWidth.
Update:
Only need to set the height constraint in sto...
abort, terminate or exit?
...he difference between those three, and how shall I end program in case of exception which I can't handle properly?
6 Answer...
How does one change the language of the command line interface of Git?
I’d like to change the language of git (to English) in my Linux installation without changing the language for other programs and couldn’t find the settings.
How to do it?
...
Difference between CPPFLAGS and CXXFLAGS in GNU Make
What's the difference between CPPFLAGS and CXXFLAGS in GNU Make?
4 Answers
4
...
SBT stop run without exiting
How do you terminate a run in SBT without exiting?
4 Answers
4
...
Static Classes In Java
... simulate a static class like this:
Declare your class final - Prevents extension of the class since extending a static class makes no sense
Make the constructor private - Prevents instantiation by client code as it makes no sense to instantiate a static class
Make all the members and functions of...
NameError: global name 'unicode' is not defined - in Python 3
...ype has been replaced by bytes.
if isinstance(unicode_or_str, str):
text = unicode_or_str
decoded = False
else:
text = unicode_or_str.decode(encoding)
decoded = True
You may want to read the Python 3 porting HOWTO for more such details. There is also Lennart Regebro's Porting to P...
What is the python “with” statement designed for?
... been using Python lightly for several months and didn't even know of its existence! Given its somewhat obscure status, I thought it would be worth asking:
...
Rails 3: I want to list all paths defined in my rails application
...
rake routes
or
bundle exec rake routes
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