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r - dplyr to calculate of prevalence of a variable in a condition

I am new in the dplyr world - so sorry if the question might sound simple, basically, I am interested in ... is what I wanted to have. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to randomly generate ANSI colors in Bash/Perl?

I want to generate ANSI colors randomly. It needs two features. Generated randomly Choice to generate from a specific ... grey or only green. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to convert class Array to XML file in C# dynamically?

I trying to setting up a Xml file whose data are in class array format. The Basic class format is OrderTemplate ... change in the above code? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Python Linked list minimum value

I am trying to find the minimum value in the list without having to use the min function and just by ... i traverse through the entire list See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - Return complex object from .Net core API

I'm using a .Net core backend with Entity Framework to retrieve objects to my angular2 frontend. As long as I ... : string; sorting: number; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - How do I return the number of unique digits in a positive integer

Example: unique_dig(123456) All unique 6 I'm trying to write code to have a function return how many unique numbers ... count[i] = count + 1 See Question&Answers more detail:os...

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android - How can i load a link in other browser from web view?

I am loading string value in my web view and i need when i click on the link shown in web view should open ... ></html>" webview.loaddata(html); See Question&Answers more detail:os...

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How can Opera-mini runs javascript only in the server instead the device?

I read that Opera mini browser can run JavaScript only in server (the code isn't run in the client, it's gets it ... . Anyone know how to do it? See Question&Answers more detail:os...

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java - How to Split text by Numbers and Group of words

Assuming I have a string containing - some comma separated string - and text my_string = "2 Marine Cargo 14,642 ... 's a number between them. See Question&Answers more detail:os...

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SQL Server 2012: How to display the @Var result inside a Case statement with literals before and after the @Var

SQL Server 2012: how to display the @Var result inside a Case statement with literals before and after the @Var? ... . What am I missing? See Question&Answers more detail:os...

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using only one button to play and pause a Mediaplayer in Android

I am new to Android, my requirement is to use only one button for playing and pause using media player class? See Question&Answers more detail:os...

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iphone - count no.of images

hi Guys I have worked on Application and I am trying to Count the No of images in my resource folder and display no ... how to do ? give me code See Question&Answers more detail:os...

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java - What will be the output of String.substring(String.length)?

public class Str { public static void main(String[] args) { String str = "abcde"; String s = ... is not throwing the IndexOutOfBoundsException? See Question&Answers more detail:os...

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audio - Steganography in image

So far, I have opened the image in a hex editor and looked at the bytes. However, for the life of me ... nothing. Any help would be appreciated. See Question&Answers more detail:os...

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How would you write this code in C using arrays instead

void storeBSTNodes(Node* root, vector<Node*> &nodes) { if (root == NULL) return; storeBSTNodes(root->left, ... /convert-normal-bst-balanced-bst/ See Question&Answers more detail:os...

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email - PHP @mail returning false

This code is not sending email, and I'm getting no errors to indicate why. How is one ... 7bit asdfasdf --7feeadcdbd29ed703423feb85438c14b-- See Question&Answers more detail:os...

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android - How can i save Battery power using in writing app

In Android 4.4 kit-kat version I saw my writing app is using high battery power ... in my application ... battery power using in application. See Question&Answers more detail:os...

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C - How can a pointer overwrite a local const block of memory but not the global const block of memory?

Last time I asked how can I generate segmentation fault in a program by bypassing the compiler's promise of not overwriting ... ~20.04) 9.3.0. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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INSERT row from another table using php PDO

I'm new to PDO and php. I want to move a row from one table to another with a link i send to the ... adstable and I'm not getting any errors. See Question&Answers more detail:os...

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ios - Get an iPhone UDID from Mobile Safari

I wanna get an iphone UDID in mobile safari,and I follow this Getting an iPhone UDID from Mobile Safari, however, I ... a "thank you" web page See Question&Answers more detail:os...

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Applescript: number list of words according to their occurrence in the sequence

So I have this list of words: {"It", "was", "the", "best", "of", "times", "it", "was", "the" ... 4}, etc. Any help would be greatly appreciated. See Question&Answers more detail:os...

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java - how do you count the number of digits in an int?

I have been working hard to try and figure out a way to count the number of 2's or whatever digit you want to ... 4 because their is 4 3's. See Question&Answers more detail:os...

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python - Determine whether N is fibonacci or not, if not find the largest fibonacci number smaller than N

How can I determine whether a given number N is a fibonacci number or not, if that number is not a fibonacci ... from you guys. Thank You. See Question&Answers more detail:os...

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ejs - How to get sum from array using javascript?

var data =[ { name:"xyz", meals:[ {num:3.5},{num:4 },{num:6.5},{num:3} ], deposits:[ {date: ... of meals & deposits for every name or object. See Question&Answers more detail:os...

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php - Class query PDO property of non-object

I not understand my error because I'm sure to have an oject.Look my print_r below: Notice: Trying to get property of ... ($row); echo '</pre>'; See Question&Answers more detail:os...

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python - How to insert duplicated values in dictionary?

I have dct = {'word1': 23, 'word2': 12, 'word1' : 7, 'word2':2} and I need to get list when ... any possibility to make it like this in Python? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Python Pygame Lighting for Pong

Hey Guys Im writing a little Pong-Game in Pygame and wanted to use a glowing-effect on the Ball and the ... with lighting? thanks in advance See Question&Answers more detail:os...

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python - How to plot a math function from string?

I have a string which represents a function, like "x * (x - 32 ( 2 /x) )". I'm using matplotlib, but ... string into an array of points to plot. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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