val_deleplace

The remove-by-value snippet is 8 lines, and it can be wrong in a subtle way: if list contains pointers, then we have a memory leak beyond the slice final length (pointer values still exists within capacity, and objects are not garbage collected).

I wrote several possible implementations here, none of which is as concise and as obviously correct as an hypothetical "list.remove(v)": https://programming-idioms.org/idiom/136/remove-all-occurren...

Comment · 6 years ago

Author here: there were 2 initial use cases for me,

(1) I'm familiar with the language X but I forget e.g. how to "check if a file exists"

(2) I'm learning a new language Y, I know that "checking if a file exists" is a legit need and there must be an idiomatic way to do it in Y, so I look at the entry, alongside implementations in other languages that I'm more familiar with, so I can quickly spot the similitudes and the differences.

I do (1) all the time because my brain has very little onboard memory.

The website is open to contributions without prior validations. This means that not all snippets end up being both correct and idiomatic. I manually revert spam and "obviously incorrect" entries. For languages that I don't know very well, I encourage actual experts to fix snippets, or add a better new implementation, when they see poor contents.

Comment · 6 years ago

You can vote for Swift here https://github.com/Deleplace/programming-idioms/issues/30

Comment · 6 years ago

See https://github.com/divan/txqr for this use case. Other probably exist. It can be useful sometimes to not bother with any network at all, e.g. an international museum machine streaming map and documentation for tourists.

Comment · 7 years ago

This submission being popular in HN caused an interesting traffic spike in Programming Idioms. Here is a detailed recital of the technical and financial consequences: https://medium.com/google-cloud/surviving-traffic-spike-from...

Comment · 7 years ago

This draft: https://github.com/dgryski/go-perfbook/blob/master/TODO This short list: https://github.com/enocom/gopher-reading-list#performance This article: https://medium.com/@val_deleplace/go-code-refactoring-the-23...