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Questions tagged [string-concatenation]

String concatenation is the operation of joining two character strings end-to-end.

In particular in the theory of computation, the concatenation operation on strings is generalized to an operation on sets of strings as follows:

For two sets of strings S1 and S2, the concatenation S1S2 consists of all strings of the form vw where v is a string from S1 and w is a string from S2. In this definition, the string vw is the ordinary concatenation of strings v and w as defined in the introductory section. In this context, sets of strings are often referred to as formal languages.

Programming languages often provide operators (such as the + sign) to simplify concatenation of strings. For example, "s1" + "s2" would result in "s1s2".

2012 questions
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Concatenate line feeds

I am trying to concatenate three string variables. Data X ; a = "A" ; b = "B" ; c = "C" ; z = catx ( '0D0A'x, a, b, c ) ; run; I am trying to display the string values like this in the final dataset, so that the values appear one…
Nimit_ZZ
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A list of denied words, with a condition only if glued with symbols

A list of denied words, with a condition only if glued with symbols //my arrays $Rejected_symbols = array('*','#','-','!','?','+','=','¨','^','~','@'); $Rejected_if_with_symbols = array('t1','t2','t3','t4'); my search 1 - symbols always…
Iori Sanch
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CONCAT last number in column in a string

I'm trying to create a CONCAT() that gets the last number in the exp_id column, then adds the filename to display as a separate column. The column would display the following. copy \\\resfs\reo\reoexps\87\5\7040445i.pdf C:\temp\images CONCAT('copy…
Darius Castillo
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How do I concatenate strings in NETBEANS with + signs and escape codes?

Here's what I'm trying to do: String output = "If you borrow" + currencyFormatter.format(loanAmount); +" at an interest rate of" + rate + %; +"\nfor" + years; +",you will pay" + totalInterest + "in interest.";
Mark Harris
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String concatenation in Python list (of strings) vs. numpy array (of strings)

For the purpose of my application, I can declare an array of strings in two ways: As a list strArr1 = [""] * 5 or As a numpy array strArr2 = numpy.empty([5], dtype=str) However, I see the following difference when I try to concatenate characters…
N. CHATURV3DI
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Java lambda expression: How to concatenate key and set of values from a hashmap?

I am new to lambda expressions and currently I am stuck with a task I'd like to solve (just for the sake of learning lambdas). Given is a map Map> and I want to iterate over the entry sets concatenating the keys and their values…
oldzitterhand
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Java concatenation not working

This code should get the absolute path, append a string from a preferences file and then append ".json" to match the necessary file. I tried using "+" to concatenate strings, but it was giving the same output as the StringBuilder.append() …
Mateus Terra
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concatenate import url in typescript

I'm developing a software using typescript 2.0.3 and tslint 4.0.2 and angular. I have an issue since my import url is too long for tslint standard. Changing line limit in tslint is not possible in my case. I tried separate the url to pieces and…
Daniel W
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Mixing String + operator with StringBuilder

Let's say I have the following code: String RET = System.getProperty("line.separator"); int x = 5, y = 3; StringBuilder sb = new StringBuilder(); sb.append("Ship located at " + x + ", " + y + RET); sb.append("Current time: " +…
piegames
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Jess-Rule : Str-Cat in Field comparison doen't compile

I wan't to match a value (String) of an jess-object and the comparative value is a combination of a string and another field. Here a simple ("runnable") example: (defclass Person (is-a :THING) (slot name (type string)) (slot email (type string)))…
user2667549
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Unable to open .csv file in R ,whose file name is obtained by concatenating a string with a variable

airprobread <- function(id) { fi <- list() for (i in id) { if(i < 10) { fi[[i]] <- read.csv(file = paste("00",i,".csv",sep="")) } else if((i >= 10) & (i < 100)) { fi[[i]] <- read.csv(file=paste("0",i,".csv",sep="")) …
anurag swain
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Concatenate variables in R

I want to create an object in R, which will contain one string, with a few variables (in my case it is file path). When I try to use paste to concatenate the file paths I can see only one last variable instead of all variables in one string. I use…
Tor
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String concatenation and class function in PHP?

I was writing a simple class. Here is the code: class Book{ var $title; var $publishedDate; function Book($title, $publishedDate){ $this->title = $title; $this->publishedDate = $publishedDate; } function…
progamer
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shell: strange string concatenation behavior

I write a scipt like this: #!/bin/bash while read line do echo line ${line} pdbfile=${line}.pdb echo pdbfile ${pdbfile} done < myfile The result is: line pdb8mhtA .pdbfile pdb8mhtA While it is supposed to be line pdb8mhtA pdbfile…
dudu
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concat php value with entire quotes in sql query

How to concat this php value with entire quotes in sql query, so that it saves as properly in phpmyadmin database? $db = new mysqli('localhost','root','','geo'); // Each value is a placeholder $sql = "UPDATE file_contents SET Origin_URL =…
Unnati
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