Recent questions tagged arrays

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arrays - How to free up the memory in JavaScript

I'm working with canvas and its ImageData object which contains a huge amount of data (millions of integers). So ... that variable. Is it right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - JavaScript - Nuances of myArray.forEach vs for loop

I've seen plenty of questions that suggest using: for (var i = 0; i < myArray.length; i++){ / ... with which properties are iterated over. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Are vectors passed to functions by value or by reference in C++

I'm coding in C++. If I have some function void foo(vector<int> test) and I call it in my program, will ... passing by value but I'm not sure. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How can I decode a JSON response with an unknown key in Swift?

Im wanting to split up https://blockchain.info/ticker so that each line is its own string in an array. ... not exactly formatted right. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - C - SizeOf Pointers

char c[] = {'a','b','c'}; int* p = &c[0]; printf("%i ", sizeof(*p)); //Prints out 4 printf("%i ", ... sizeof(*p) print out 4? Shouldn't it be 1? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - C++ N nested vectors at runtime

In C++ (with or without boost), how can I create an N dimensional vectors where N is determined at runtime? ... a 3d cube is allocated. etc. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - PHP syntax for dereferencing function result

Background In every other programming language I use on a regular basis, it is simple to operate on the return value of a ... ->{0}; // <- nope See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Temporarily transmute [u8] to [u16]

I have a [u8; 16384] and a u16. How would I "temporarily transmute" the array so I can set the two ... the second to the most significant byte? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Binary Search algorithm implementations

I have come across multiple problems which use variations of binary search to reach the final answer. These problems ... indices start at 0. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Trying to solve symmetric difference using Javascript

I am trying to figure out a solution for symmetric difference using javascript that accomplishes the following objectives: accepts ... 6. 5. 4] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - What is the advantage of linspace over the colon ":" operator?

Is there some advantage of writing t = linspace(0,20,21) over t = 0:1:20 ? I understand the former produces a ... is useful over t = 0:1:20? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Implement list-like index access in Python

I'd like to be able to access some values of a python object using array-like syntax, ie: obj = MyClass() ... in the python class in question? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Redim Preserve in C#?

I was shocked to find out today that C# does not support dynamic sized arrays. How then does a VB.NET ... the rows returned from the database. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Fastest JavaScript summation

What is the fastest way to sum up an array in JavaScript? A quick search turns over a few different ... better way then straight iteration. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Convert Bytes to Int / uint in C

I have a unsigned char array[248]; filled with bytes. Like 2F AF FF 00 EB AB CD EF ..... This ... running on a microcontroller) With Regards Sam See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How to divide a set into two subsets such that difference between the sum of numbers in two sets is minimal?

Given a set of numbers, divide the numbers into two subsets such that difference between the sum of numbers in ... solution? Can we do better? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - PHP array_filter with arguments

I have the following code: function lower_than_10($i) { return ($i < 10); } that I can use to filter an ... 10 to $num or whatever number? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Get-ChildItem.Length is Wrong

I am writing a recursive function that goes through a directory and copies every file and folder in it. The first ... how to get around this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Spark Error:expected zero arguments for construction of ClassDict (for numpy.core.multiarray._reconstruct)

I have a dataframe in Spark in which one of the columns contains an array.Now,I have written a separate UDF ... why this is happening? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - C - Difference between "char var[]" and "char *var"?

I am expecting that both following vectors have the same representation in RAM: char a_var[] = "XXXx00"; char *p_var = ... f(a_var) is Ok! Why? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - c++ sort with structs

I am having a hard time with this problem which requires a sort of customer names, customer ids, and finally amount ... 3: Sort by amount due } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - php - How do I fix this illegal offset type error

I'm getting illegal offset type error for every iteration of this code. Here's the code : $s = array(); for($i ... $source] += 1; } print_r($s) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How do i define a structure in Matlab

I know that a structure can be defined by in several ways such as: Adding fields to a variable p.color.red ... should I use a class/interface? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Get list of installed android applications

Hi I want to get a list of all of the installed applications on the users device I have been googling for the ... the list to actually show thanks for any help Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Have I reached the limits of the size of objects JavaScript in my browser can handle?

I'm embedding a large array in <script> tags in my HTML, like this (nothing surprising): <script> var ... than the obvious: sending less data to the browser Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - php implode (101) with quotes

Imploding a simple array would look like this $array = array('lastname', 'email', 'phone'); $comma_separated ... parameter for implode am I missing something ? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Convert HttpPostedFileBase to byte[]

In my MVC application, I am using following code to upload a file. MODEL public HttpPostedFileBase File { get; set; ... .How can convert this to byte array } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Find the Smallest Integer Not in a List

An interesting interview question that a colleague of mine uses: Suppose that you are given a very long, unsorted list of ... of the list, say N, in advance. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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