Concatenate two CSV files or data under certain conditions

okay, I can not seem to find the solution so here is my question. I would really appreciate if someone from the stackoverflow community could suggest a solution soon since I have to submit the results. I have two csv files (can be loaded as dataframe

Concatenate data frames with different lengths

This question already has an answer here: Simultaneously merge multiple data.frames in a list 7 answers I have many data.frames in different length, and I want to concatenate them one by one by row.names in R, if one data.frame miss some names, then

Angular - how to concatenate var name

I just started to learn Angular, and I tried to make concat var name so I can control it dynamically. This is what I tried - <div ng-app="myApp" ng-controller="myCtrl"> <button ng-click="myFunc(1)">Click Me!</b

Concat URL in PHP

I have a problem when I try concatenate variables with a URL This works: $id = 123; $url = file_get_contents("".$id."&content=udpmessage"); But this doe

Channels inside comments

I noticed that when I place quotations around something in a comment line, the words in quotations change color to indicate that the interpreter sees them as a string. I found this confusing because I thought that the interpreter was supposed to igno

How to use the text of a TextBox as a filename?

I am a beginner when it comes to c#. Can anyone help me? I want the variable Username to be used as the filename like .txt. I have this code: String Username = Nametxt.Text; StreamWriter stream = new StreamWriter(@"*Username*.txt"); I want the v

How to concatenate the tables at the end of the loop

I have created two class in Java. The main class 'Main' is used to pass array values into the second class 'Plan'. My code looks something like this: import java.util.ArrayList; import java.utils.Arras; public class Main { public enum State { A, D, H

Concatenation of the string in the JQuery selector

I'm trying to concatenate a variable into a JQuery selector (which I understand to be fairly straightforward), but I'm running into some interesting behavior. My code is supposed to uncheck certain radio selectors along a y-axis. for(var i = 1; i < 5

Why concatenate?

This question already has an answer here: Should I use curly brackets or concatenate variables within strings? 4 answers I often see programmers on Youtube concatenating like: .$example. Small question, I would like to know what the difference is bet

PHP SQL concatenation

I have a SQL query in which I want to select records that where paid between two dates. Here's how I build my query: $qry = array(); $qry[] = "SELECT DISTINCT 2 AS Record_Type, wp_woocommerce_order_items.order_id As Order_Id, First_Name; $qry[] = &qu

Group and sum with select a lot of C #?

I have an incoming array with a count per row and a string which represents one or more key's split by underscore. for each key I'd like to group and sum the total where if the key appears in a row with a total of 5, each item split by the underscore

NSString not concatenate

I need to generate big XML file. So i create this code int n = 6; NSString *carString = @" \n"; for (int i=1;i<=n;i++){ for (int j=1;j<=n;j++){ if (j!=i){ NSString *carStr = [@""stringByAppendingFormat:@"<car from=\"

Good way to concatenate str to the list?

Is there a way to efficiently concatenate str and list? inside = [] #a list of Items class Backpack: def add(toadd): inside += toadd print "Your backpack contains: " #now what do I do here? It sounds like you're just trying to add a string to a

Perl concatenate two numbers in another?

I don't want to add the numbers, but "concatenate" them and interpret the value as a single number. For example, $var1 = 567; $var2 = 1111; #trying to explain what I wanna do with java-style syntax $var3 = parseInt($var1 CONCAT $var2); print $va

Concatenate Mat in OpenCV

I have a couple of images in Mat objects all with same dimensions I'd like to create one bix cv::Mat object to hold them all So the dimension of the new matrix is: widthNew = widthOld x number of matrices, height remains unchanged. I found that such

Javascript - Alternative to HTML concatenation

Possible Duplicate: JavaScript: How should I generate a lot of HTML? I feel really stupid doing something like this: var html = '<div><ul>'; for(var i=0; i<10; i++) { html += '<li>' + i + '</li>'; } html += '</ul></div&

PHP: How to concatenate a reference to a string variable?

In the following snippet of PHP the $phrases needs to reflect the change made in $greeting. How can this be achieved? $greeting = "Hello!"; $phrases = array('greeting' => $greeting . " Glad to see you."); echo $phrases['greeting'];


I'm getting an unexpected T_CONCAT_EQUAL error on a line of the following form: $arg1 .= "arg2".$arg3."arg4"; I'm using PHP5. I could simply go an do the following: $arg1 = $arg1."arg2".$arg3."arg4"; but I'd like to