大约有 8,130 项符合查询结果（耗时：0.0318秒） [XML]
Why should hash functions use a prime number modulus?
...ught a data structures book off the bargain table for $1.25. In it, the explanation for a hashing function said that it should ultimately mod by a prime number because of "the nature of math".
...
Check synchronously if file/directory exists in Node.js
...s question has changed over the years. The current answer is here at the top, followed by the various answers over the years in chronological order:
Current Answer
You can use fs.existsSync():
const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(path)) {
// Do som...
How to get the Full file path from URI
I'd like to get the full file path, from a URI. The URI isn't a Image, but it's a music file, but if i do it like the MediaStore Solution, it won't work if the app user selects eg Astro as browser, instead of Music Player. How do I solve this?
...
Git submodule head 'reference is not a tree' error
I have a project with a submodule that is pointing to an invalid commit: the submodule commit remained local and when I try to fetch it from another repo I get:
...
Can we define implicit conversions of enums in c#?
Is it possible to define an implicit conversion of enums in c#?
12 Answers
12
...
Capture Image from Camera and Display in Activity
I want to write a module where on a click of a button the camera opens and I can click and capture an image. If I don't like the image I can delete it and click one more image and then select the image and it should return back and display that image in the activity.
...
How to get existing fragments when using FragmentPagerAdapter
I have problem making my fragments communicating with each other through the Activity , which is using the FragmentPagerAdapter , as a helper class that implements the management of tabs and all details of connecting a ViewPager with associated TabHost . I have implemented FragmentPagerAdapter...
How can I know which parts in the code are never used?
I have legacy C++ code that I'm supposed to remove unused code from. The problem is that the code base is large.
18 Answers...
Which way is best for creating an object in JavaScript? Is `var` necessary before an object property
So far I saw three ways for creating an object in JavaScript. Which way is best for creating an object and why?
8 Answers
...
Why is list initialization (using curly braces) better than the alternatives?
...
Basically copying and pasting from Bjarne Stroustrup's "The C++ Programming Language 4th Edition":
List initialization does not allow narrowing (§iso.8.5.4). That is:
An integer cannot be converted to another integer that cannot hold...