concatenation - w3toppers.com

C++ concatenate two int arrays into one larger array

Use std::copy defined in the header <algorithm>. The args are a pointer to the first element of the input, a pointer to one past the last element of the input, and a pointer to the first element of the output. ( https://en.cppreference.com/w/cpp/algorithm/copy ) int * result = new int[size1 + size2]; std::copy(arr1, arr1 + size1, … Read more

Concat all column values in sql

In SQL Server: SELECT col1 AS [text()] FROM foo FOR XML PATH (”) In MySQL: SELECT GROUP_CONCAT(col1 SEPARATOR ”) FROM foo In PostgreSQL: SELECT array_to_string ( ARRAY ( SELECT col1 FROM foo ), ” ) In Oracle: SELECT * FROM ( SELECT col1, ROW_NUMBER() OVER(ORDER BY 1) AS rn FROM foo MODEL DIMENSION BY (rn) … Read more

How can I concatenate two integers in Python?

Cast both to a string, concatenate the strings and then cast the result back to an integer: z = int(str(x) + str(y))

SQL, How to Concatenate results?

With MSSQL you can do something like this: declare @result varchar(500) set @result=”” select @result = @result + ModuleValue + ‘, ‘ from TableX where ModuleId = @ModuleId

Concatenate multiple ranges using vba

Here is my ConcatenateRange. It allows you to add a seperator if you please. It is optimized to handle large ranges since it works by dumping the data in a variant array and working with it within VBA. You would use it like this: =ConcatenateRange(A1:A10) The code: Function ConcatenateRange(ByVal cell_range As range, _ Optional ByVal … Read more

Create a variable in swift with dynamic name

One solution is to store all your variables in an array. The indexes for the variables you store in that array will correspond to the index values you’re trying to include in the variable name. Create an instance variable at the top of your view controller: var people = [WhateverTypePersonIs]() Then create a loop that … Read more

Concatenate char arrays in C++

In C++, use std::string, and the operator+, it is designed specifically to solve problems like this. #include <iostream> #include <string> using namespace std; int main() { string foo( “hello” ); string test( “how are” ); cout << foo + ” , ” + test; return 0; }

How to convert DataFrame.append() to pandas.concat()?

You can store the DataFrames generated in the loop in a list and concatenate them with features once you finish the loop. In other words, replace the loop: for count in range(num_samples): # …. code to produce `input_vars` features = features.append(input_vars) # remove this `DataFrame.append` with the one below: tmp = [] # initialize list … Read more