Advertisements If I have a TreeSet and I use contains() on the Set view of keySet() is the time complexity O(1)? Map<String, Integer> map1 = new TreeMap<>(); map1.keySet().contains(xyz); I am wondering as for example contains() for HashSet and LinkedHashSet is O(1) but for a TreeSet is O(log(N)) but the keySet() method is not returning a… Read More What is the time complexity of contains() of a Set view?
Advertisements I thought this would be something simple to do, but I don’t think it’s possible, why is that? This is what I’m trying to do. console.log("hello") ? bool : ""; This gives me an error: Expected an assignment or function call and instead saw an expression. Not sure exactly what that means. >Solution :… Read More Is it possible to use ternary operator for console.log?
Advertisements My supervisor asked me the other day if a log file in a Python script is created at runtime or not. Is that another way of asking: is a new log file created every time the script is run? Because to me everything happens "at runtime" and it can be no other way. How… Read More What does the phrase "created at runtime mean?"
Advertisements global.d.ts declare global { export interface Window { … } export {} I realized that export {} has an effect on redefining window module. I saw a brief explanation that export {} makes the d.ts file a module. However, I didn’t understand how d.ts became a module would affect the typescript. Is there any… Read More How export {} affects declare global
Advertisements The prototype of GetCurrentDirectory DWORD GetCurrentDirectory( [in] DWORD nBufferLength, [out] LPTSTR lpBuffer ); DWORD is unsigned long, LPTSTR is a pointer to wchar buffer in Unicode environment. It can be called from C++ #define MAX_BUFFER_LENGTH 256 int main() { TCHAR buffer[MAX_BUFFER_LENGTH]; GetCurrentDirectory(MAX_BUFFER_LENGTH, buffer); return 0; } I tried to encapsulate this win32 function in… Read More How to call the Win32 GetCurrentDirectory function from C#?
Advertisements I would like to improve the type-checking of the following object: interface Config { fields: Record<string, unknown>; table: { id: string }[]; } const config: Config = { fields: { id: {} }, table: [ { id: ‘id’ }, { id: ‘name’ }, ] }; The part I’m struggling with is that I want… Read More Validate property based on another property keys
Advertisements I was using Lua with HAProxy to write logs into custom log file. Although my script is running totally fine. But I don’t see anything written in my text file. Here is my lua script which I am loading from HAProxy.cfg. local function foo(value) — MY CODE — file = io.open("test.lua", "a") io.output(file) io.write("The… Read More Unable to read/write to file from Lua script running from HAPRoxy
Advertisements I’m unable to map through json data from a fake api. It’s working when returning more than one data but this error happens when the data is a single object. Here is my code: {subSector ? subSector.map((sector) => ( // ^ ~ subSector.map is not a function <MenuItem value={sector.id}>{sector.email}</MenuItem> )) : "nodata"} >Solution :… Read More Unhandled Runtime Error TypeError: subSector.map is not a function
Advertisements I have a trait Serializer: trait Serializer { fn serialize(&self, data: Rc<()>) -> Result<(), Error>; } And some Foo which implements it. Notably, data is not Send. The actual implementation requires an async context to execute, so I’ve split the creation of an async runtime away from the actual implementation, like so: struct Foo… Read More Future is not Send, only when from async Trait
Advertisements I am working on a program that will scrape metacritic for info on the movie from my library and display it but in certain parts like grabbing the rating always returns nothing what am I doing wrong? from bs4 import BeautifulSoup import requests import os def ratingsGet(headers, movie): movie = movie.lower().replace(" ","-") detail_link="https://www.metacritic.com/movie/" +… Read More Python BeautifulSoup failure to get data from a div with a certain class