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What are the drawbacks of Stackless Python? [closed]
I've been reading recently about Stackless Python and it seems to have many advantages compared with vanilla cPython. It has all those cool features like infinite recursion, microthreads, continuations, etc. and at the same time is faster than cPython (around 10%, if the Python wiki is to be bel...
How to stop a PowerShell script on the first error?
I want my PowerShell script to stop when any of the commands I run fail (like set -e in bash). I'm using both Powershell commands ( New-Object System.Net.WebClient ) and programs ( .\setup.exe ).
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Count the items from a IEnumerable without iterating?
... doesn't support this. This is by design. IEnumerable uses lazy evaluation to get the elements you ask for just before you need them.
If you want to know the number of items without iterating over them you can use ICollection<T>, it has a Count property.
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What is a 'Closure'?
...urrying and closures were mentioned.
What is a closure? How does it relate to currying?
23 Answers
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Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition
... past couple of years was a project about image processing . The goal was to develop a system to be able to recognize Coca-Cola 'cans' (note that I'm stressing the word 'cans', you'll see why in a minute). You can see a sample below, with the can recognized in the green rectangle with scale and...
getApplication() vs. getApplicationContext()
I couldn't find a satisfying answer to this, so here we go: what's the deal with Activity/Service.getApplication() and Context.getApplicationContext() ?
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How to return a result from a VBA function
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For non-object return types, you have to assign the value to the name of your function, like this:
Public Function test() As Integer
test = 1
End Function
Example usage:
Dim i As Integer
i = test()
If the function returns an Object type, then you must u...
Embed git commit hash in a .Net dll
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We use tags in git to track versions.
git tag -a v13.3.1 -m "version 13.3.1"
You can get the version with hash from git via:
git describe --long
Our build process puts the git hash in the AssemblyInformationalVersion attribute of the Asse...
Cartesian product of multiple arrays in JavaScript
...tesian(f(a, b), ...c) : a;
Update:
This is the same as above but improved to strictly follow the Airbnb JavaScript Style Guide - validated using ESLint with eslint-config-airbnb-base:
const f = (a, b) => [].concat(...a.map(d => b.map(e => [].concat(d, e))));
const cartesian = (a, b, ...c) ...
Delete specific line number(s) from a text file using sed?
I want to delete one or more specific line numbers from a file. How would I do this using sed?
6 Answers
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