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Getting name of the class from an instance
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NSStringFromClass([instance class]) should do the trick.
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Remove empty strings from a list of strings
I want to remove all empty strings from a list of strings in python.
12 Answers
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When does invoking a member function on a null instance result in undefined behavior?
...tly stated. (Notes are non-normative.)
However, one can try to deduced it from §3.10/2:
An lvalue refers to an object or function.
When dereferencing, the result is an lvalue. A null pointer does not refer to an object, therefore when we use the lvalue we have undefined behavior. The proble...
Python: changing value in a tuple
...t is better not to assume that the original poster is creating all of this from scratch doesn't know any better. More often we are dealing with output from another module or data source in a format or type that we cant control.
– rtphokie
Jan 6 '18 at 17:15
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How to remove leading and trailing zeros in a string? Python
... is also a general solution that strips both leading and trailing elements from an iterable:
Code
import more_itertools as mit
iterables = ["231512-n\n"," 12091231000-n00000","alphanum0000", "00alphanum"]
pred = lambda x: x in {"0", "\n", " "}
list("".join(mit.strip(i, pred)) for i in iterables...
TortoiseHg Apply a Patch
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From Repository Explorer, Repository > Import...
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git stash blunder: git stash pop and ended up with merge conflicts
...d a git stash pop and ended up with merge conflicts. I removed the files from the file system and did a git checkout as shown below, but it thinks the files are still unmerged. I then tried replacing the files and doing a git checkout again and same result. I event tried forcing it with -f f...
How can I profile Python code line-by-line?
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I believe that's what Robert Kern's line_profiler is intended for. From the link:
File: pystone.py
Function: Proc2 at line 149
Total time: 0.606656 s
Line # Hits Time Per Hit % Time Line Contents
==============================================================
149 ...
iOS 7 style Blur view
... the complete replication of the blur size in iOS 7's control center view. From that, I created the GPUImageiOS7BlurFilter class that encapsulates the proper blur size and color correction that Apple appears to be using here. This is how GPUImage's blur (on the right) compares to the built-in blur (...
Efficiently test if a port is open on Linux?
From a bash script how can I quickly find out whether a port 445 is open/listening on a server.
14 Answers
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