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Is it bad practice to have a constructor function return a Promise?
... blogging platform and it has many async operations going on inside. These range from grabbing the posts from directories, parsing them, sending them through template engines, etc.
...
foreach vs someList.ForEach(){}
...ion>();
// Numbers 0 to 9
List<int> numbers = Enumerable.Range(0, 10).ToList();
// Store an action that prints each number (WRONG!)
foreach (int number in numbers)
actions.Add(() => Console.WriteLine(number));
// Run the actions, we actually print 10 copies...
How much faster is C++ than C#?
...er than C#... but difference is nowhere near 40%... right now it's more in range of <10%. What your example illustrates is that programmers should stick with language of their choice (and from your profile it's obvious that you are career C++ programmer). In C# you can do 2D array int[,]... follo...
Solving “Who owns the Zebra” programmatically?
...nationalities + pets + drinks + cigarettes
problem.addVariables(variables, range(minn, maxn+1))
# Each house has its own unique color.
# All house owners are of different nationalities.
# They all have different pets.
# They all drink different drinks.
# They all smoke different cigarettes.
for var...
What is Unicode, UTF-8, UTF-16?
...mbers and letters like the ones in this sentence. Unfortunately, today's strange world of global intercommunication and social media was not foreseen, and it is not too unusual to see English, العربية, 汉语, עִבְרִית, ελληνικά, and ភាសាខ្មែរ in the same doc...
Python Infinity - Any caveats?
..."<stdin>", line 1, in ?
OverflowError: (34, 'Numerical result out of range')
The inf value is considered a very special value with unusual semantics, so it's better to know about an OverflowError straight away through an exception, rather than having an inf value silently injected into your ...
How do malloc() and free() work?
...cated. C compiles straight to machine code and without special debugging arrangements there are no sanity checks on loads and stores. Now, if you try and access a free block, the behavior is undefined by the standard in order to not make unreasonable demands on library implementators. If you try and...
What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
...ple branches in single repository) is still second-class citizen, and in strange and complicated way it implements tags. Also the way it deals with file renames was suboptimal (but this migth have changed). Mercurial doesn't support octopus merges (with more than two parents).
From what I have hear...
How do I profile memory usage in Python?
...eapq.py:569: 0.5 KiB
result = [(key(elem), i, elem) for i, elem in zip(range(0, -n, -1), it)]
10 other: 2.2 KiB
Total allocated size: 4.0 KiB
Now here's a version inspired by another answer that starts a second thread to monitor memory usage.
from collections import Counter
import linecache
i...
Bash tool to get nth line from a file
...n wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file.
19 Answers
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