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How to find index of all occurrences of element in array?
...s comment, a simple for loop would get the same job done more efficiently, and it is easier to understand and therefore easier to maintain:
function getAllIndexes(arr, val) {
var indexes = [], i;
for(i = 0; i < arr.length; i++)
if (arr[i] === val)
indexes.push(i);
...
Header files for x86 SIMD intrinsics
...d normally just include <immintrin.h>. It includes everything.
GCC and clang will stop you from using intrinsics for instructions you haven't enabled at compile time (e.g. with -march=native or -mavx2 -mbmi2 -mpopcnt -mfma -mcx16 -mtune=znver1 or whatever.)
MSVC and ICC will let you use int...
right click context menu for datagridview
... a datagridview in a .NET winform app. I would like to rightclick on a row and have a menu pop up. Then i would like to select things such as copy, validate, etc
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setImmediate vs. nextTick
Node.js version 0.10 was released today and introduced setImmediate . The API changes documentation suggests using it when doing recursive nextTick calls.
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Convert column classes in data.table
... dt[, Quarter:=as.character(Quarter)]
str(dtnew)
Classes ‘data.table’ and 'data.frame': 10 obs. of 3 variables:
$ ID : Factor w/ 2 levels "A","B": 1 1 1 1 1 2 2 2 2 2
$ Quarter: chr "1" "2" "3" "4" ...
$ value : num -0.838 0.146 -1.059 -1.197 0.282 ...
Using lapply and as.charac...
Base64 encoding and decoding in client-side Javascript
Are there any methods in JavaScript that could be used to encode and decode a string using base64 encoding?
13 Answers
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How do you dynamically add elements to a ListView on Android?
...anyone explain or suggest a tutorial to dynamically create a ListView in android?
7 Answers
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Algorithm for classifying words for hangman difficulty levels as “Easy”,“Medium”, or “Hard”
...angman strategy
There's an idea that's implicit in some the other answers and comments, that the optimal strategy for the solver would be to base their decisions on the frequency of letters in English, or on the frequency of words in some corpus. This is a seductive idea, but it's not quite right. ...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
I'm making a php login, and I'm trying to decide whether to use SHA1 or Md5, or SHA256 which I read about in another stackoverflow article. Are any of them more secure than others? For SHA1/256, do I still use a salt?
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What is the difference between == and equals() in Java?
I wanted to clarify if I understand this correctly:
23 Answers
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