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When using Result or Option to get a value, the value is wrapped in a Ok or Some. For example, with pattern matching to get a Result: let var: Json = match serde_json::from_str(&my_string) { ...
Your question is a bit ambiguous. Usually when one talks about something being "completely abstract", one means the details of the representation are opaque. This is the sense of "abstract" in "abs...
Proposal, based on the feedback here so far: because code-review questions have special rules, create a category. This allows (and we would need proposed text from the community for): Category d...
As already said by another answer, you're not "dividing a string by another string". I'd just like to complement by providing more details about how this works. If you try to divide a string by ...
You very likely have a pathlib Path (or PurePath) object there. pathlib overrides the division operator to perform platform-aware path appends. >>> import pathlib >>> pathlib.Pa...
First you want to make your new branch at HEAD (current main). Then you want to point main back to origin/main. # Create new branch git branch new_branch_name # Point main back at origin git ...
if(typeof(var) !== 'undefined' || typeof(var) !== null || var !== ''){}else{} is a wild thing to write for anything other than a variable that takes either undefined, null, or a string as possib...
As a newcomer here, I'd like to suggest two additional issues that weigh in favor of closing unworkable questions. First, a site that wants to grow its community needs to moderate its content. If...
(Speaking personally, not for the team.) People using git are usually using it in a software context, and Software Development's scope is intentionally broad, so they definitely fit here. This is...
tl;dr [1] git merge origin/branch_name Or rebase instead of merge Long answer When your local repository has one or more remotes configured, there are special branches that the documentation ...
The auto feature was indeed mainly meant to solve long cumbersome template container declarations in C++. But when introduced to C23 - where there are no templates let alone template containers - i...
Normally, whenever a function designator (a function's name) is used in an expression, it decays to a function pointer to that function. typeof is one of those exceptions to the "decay" rules of C...
I did git fetch to quickly get latest commits. I did this instead of git pull so I could deal with merge conflicts offline. But my repository is still stuck on the old commit, and now git pull fail...
There is no keyword or compile-time construct to prevent this, but it can be accomplished through the use of a runtime exception: class Parent { public Parent() { if (getClass(...
What are some legitimate use cases for raising a NotImplementedError exception in Python? How can it help express a code author's intentions to aid code maintenance and/or further development of co...
Not only does the C language not guarantee it, it also will fail on actual compilers, as soon as you enable optimisation (which you'll generally want to do because you want your code run fast, afte...
The simple explanation would be that you simply don't have write access to the path, which is one possibility. Another weird phenomenon that may happen is that you are running a very old C...
You're matching the regex pattern of /-/, so it just matches every individual hyphen, regardless of where. You want to match the entire entry if it's only hyphens, or /^-+$/. ^ – Beginning of line...
I was playing around with mapped tuples and came across an interesting case where TypeScript cannot infer the types used: interface Foo<A, B> { (a: A, b: B): any } function test<...
The awk gsub function takes as its first argument a regular expression indicating the substring to be replaced, and replaces a matching substring with the value of the second argument, which is the...
When using the Array.prototype.sort method, we can pass a compare function as argument. Then, this function can be used to process array's elements, so the comparison is made using some custom crit...
Yes, it is guaranteed to evaluate to true. All variables with static storage duration are set to zero in case of arithmetic types or set to null in case they are pointers. The relevant part is C17 ...
TL;DR You should use int *p = malloc(n * sizeof *p); for two reasons The cast (int*) is not necessary, which means it's clutter. Using sizeof *p instead of sizeof(int) removes code duplica...
Consider this code: #include <stdio.h> int main(void) { static void *ptr; if(ptr == NULL) puts("It's NULL!"); } I wonder if this is guaranteed to print "It's NULL!" I know ...
To do that, you could change the selector from body to *, as the other answer said. By selecting only body, it won't change child elements that has defined a more specific rule, and that's why you ...