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A non-blocking read on a subprocess.PIPE in Python
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A reliable way to read a stream without blocking regardless of operating system is to use Queue.get_nowait():
import sys
from subprocess import PIPE, Popen
from threading import Thread
try:
from queue import Queue, Empty
except ImportError:
from Queue import Queue, Empty # python 2.x
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What is the difference between == and Equals() for primitives in C#?
...s).
When you call it with an int and a short, the compiler will implicitly convert the short to int and compare the resulting ints by value.
Other ways to make it work
Primitive types also have their own Equals() method that accepts the same type.
If you write age.Equals(newAge), the compiler will s...
How to convert char to int?
What is the proper way to convert a char to int ?
This gives 49 :
11 Answers
11
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What are the differences between the threading and multiprocessing modules?
...cessing in general.
However, Python* has an added issue: There's a Global Interpreter Lock that prevents two threads in the same process from running Python code at the same time. This means that if you have 8 cores, and change your code to use 8 threads, it won't be able to use 800% CPU and run 8x...
Count(*) vs Count(1) - SQL Server
... the same plans.
Contrary to the popular opinion, in Oracle they do too.
SYS_GUID() in Oracle is quite computation intensive function.
In my test database, t_even is a table with 1,000,000 rows
This query:
SELECT COUNT(SYS_GUID())
FROM t_even
runs for 48 seconds, since the function needs ...
How to convert an integer to a string in any base?
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Any idea why the convert-base-N-to-string isn't included by default in Python? (It is in Javascript.) Yeah, we can all write our own implementation, but I've been searching around on this site and elsewhere, and many of them have bugs. Better...
Converting a string to int in Groovy
I have a String that represents an integer value and would like to convert it to an int . Is there a groovy equivalent of Java's Integer.parseInt(String) ?
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Check if Python Package is installed
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If you mean a python script, just do something like this:
Python 3.3+ use sys.modules and find_spec:
import importlib.util
import sys
# For illustrative purposes.
name = 'itertools'
if name in sys.modules:
print(f"{name!r} already in sys.modules")
elif (spec := importlib.util.find_spec(name))...
How to convert C# nullable int to int
How do I convert a nullable int to an int ? Suppose I have 2 type of int as below:
17 Answers
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Convert hex string to int
I am trying to convert a string that is 8 characters long of hex code into an integer so that I can do int comparison instead of string comparisons over a lot of different values.
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