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How to get a pixel's x,y coordinate color from an image?
...data;
Because you are only grabbing one pixel, pixelData is a four entry array containing the pixel's R, G, B, and A values. For alpha, anything less than 255 represents some level of transparency with 0 being fully transparent.
Here is a jsFiddle example: http://jsfiddle.net/thirtydot/9SEMf/869...
Select multiple images from android gallery
... You can get the urls in the result Intent.getClipData. It has the array of ClipData Item.
– Tam Huynh
Aug 15 '18 at 8:52
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show 2 m...
Generating random integer from a range
... The algorithm operates on a
19,937 bit seed, stored in an
624-element array of 32-bit unsigned
integers. The value 2^19937-1 is a
Mersenne prime; the technique for
manipulating the seed is based on an
older "twisting" algorithm -- hence
the name "Mersenne Twister".
An appealing a...
Literal suffix for byte in .NET?
...eger, ULong, or UShort data types, or for any composite data types such as arrays or structures.
– Pona
Jul 17 '19 at 23:10
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Why is quicksort better than mergesort?
...rt: If we are going with random pivot, the call stack has fragments of the array partitioned in a random way. This requires random access. However, for each call in the stack, both left and right pointers move sequentially. I am assuming these would be kept in the cache. The swaps are operations ag...
Enabling HTTPS on express.js
...de requires that you break those certificates into separate elements of an array.
var express = require('express');
var https = require('https');
var fs = require('fs');
var options = {
ca: [fs.readFileSync(PATH_TO_BUNDLE_CERT_1), fs.readFileSync(PATH_TO_BUNDLE_CERT_2)],
...
Node.js on multi-core machines
...compared to lets say using Redis or Memcache wile just sending string/data/arrays in between processes? Which way would be faster?
– NiCk Newman
Sep 4 '15 at 5:27
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Sorting HashMap by values [duplicate]
...<Integer, String> passedMap) {
List<Integer> mapKeys = new ArrayList<>(passedMap.keySet());
List<String> mapValues = new ArrayList<>(passedMap.values());
Collections.sort(mapValues);
Collections.sort(mapKeys);
LinkedHashMap<Integer, String> so...
Is 'switch' faster than 'if'?
...table is memory address that holds pointer to the labels in something like array structure. following example will help you understand how jump tables are laid out
00B14538 D8 09 AB 00 D8 09 AB 00 D8 09 AB 00 D8 09 AB 00 Ø.«.Ø.«.Ø.«.Ø.«.
00B14548 D8 09 AB 00 D8 09 AB 00 D8 09 AB 00 00 00...
Finding a substring within a list in Python [duplicate]
...
Again, be careful using terms like list to name an array or list. list is a Python keyword and should not be replaced in normal code.
– Blairg23
Oct 13 '16 at 0:33
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