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Difference between subprocess.Popen and os.system
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If you check out the subprocess section of the Python docs, you'll notice there is an example of how to replace os.system() with subprocess.Popen():
sts = os.system("mycmd" + " myarg")
...does the same thing as...
sts = Popen("mycmd" + " myarg", shell=True).wait()
T...
Is ASCII code 7-bit or 8-bit?
...mizdat copy at http://falsedoor.com/doc/ascii_evolution-of-character-codes.pdf) and then chase its references (many of which are not available online and may be hard to find even with access to a university library, I regret to say).
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What is the logic behind the “using” keyword in C++?
...related to templates. Warning: there may be typos due to copying over from PDF.
First let’s consider a toy example:
template <typename T>
class MyAlloc {/*...*/};
template <typename T, class A>
class MyVector {/*...*/};
template <typename T>
struct Vec {
typedef MyVector<T...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...'s easier to test and maintain.
You may find this paper by Martin Fowler (PDF) helpful.
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Inspecting standard container (std::map) contents with gdb
... of date. With a recent GCC and GDB it Just WorksTM thanks to the built-in Python support in GDB 7.x and the libstdc++ pretty printers that come with GCC.
For the OP's example I get:
(gdb) print m
$1 = std::map with 2 elements = {[1] = 2, [2] = 4}
If it doesn't work automatically for you see the...
Using logging in multiple modules
I have a small python project that has the following structure -
11 Answers
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How do I write a bash script to restart a process if it dies?
I have a python script that'll be checking a queue and performing an action on each item:
8 Answers
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How do you write multiline strings in Go?
Does Go have anything similar to Python's multiline strings:
9 Answers
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Import multiple csv files into pandas and concatenate into one DataFrame
...abases) as if it was one data source. There must be something similar in python, since it has had a 20 year jump start on doing "big data".
– Hexatonic
Dec 28 '15 at 4:22
303
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Why does substring slicing with index out of range work?
...ous. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character outside of a string. A single character is just a 1-character string.
(For the exact semantics of slicing outside the range of a sequence, see mgilson's answer.)
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