You can use the following code to create object from a class which name is provided by the user in program run time.
Type type = Type.GetType("Employee");
object instance = Activator.CreateInstance(type);
just for reference sharing the URL of the static class Activator which is part of system namespace.
https://learn.microsoft.com/en-us/dotnet/api/system.activator?view=net-7.0
import mysql.connector
import openpyxl
# Open the .xlsx file
wb = openpyxl.load_workbook('data.xlsx')
sheet = wb.active
# Connect to the MySQL database
cnx = mysql.connector.connect(user='user', password='password', host='host', database='database')
cursor = cnx.cursor()
# Validate and import the data
for row in sheet.rows:
# Validate each cell in the row
if row[0].value == None:
print("Error: Missing value in column 1")
elif row[1].value == None:
print("Error: Missing value in column 2")
else:
# If the data is valid, insert it into the database
sql = "INSERT INTO table (column1, column2) VALUES (%s, %s)"
val = (row[0].value, row[1].value)
cursor.execute(sql, val)
# Commit the changes to the database
cnx.commit()
# Close the connection
cnx.close()
To exit the Bash session, type "exit" without quotes and then the Enter key.
That should exit the SSH session and get you back to the PS C:\Windows\system32 prompt.
Just close the Powershell session by clicking on the X at the upper right corner of the window.
Amazon Linux it's CentOS-based, which is RedHat-based. RH-based installs use yum not apt-get. Something like yum search httpd should show you the available Apache packages - you likely want yum install httpd24.
To see if Node is installed, open the Windows Command Prompt, Powershell or a similar command line tool, and type node -v . This should print the version number so you'll see something like this v0. 10.35
LINQ is a set of extension methods for the .NET Framework that allow developers to query data from various sources using a consistent syntax.
The methods that start with "As" generally return a new sequence that is a projection of the original sequence, with each element in the new sequence being a transformation of the corresponding element in the original sequence. These methods do not perform any conversion, but rather just change the way the data is presented. For example, the AsEnumerable() method returns the input sequence as an IEnumerable<T>, regardless of its original type.
On the other hand, the methods that start with "To" perform a conversion of the input sequence to a new type or format. These methods often involve creating a new collection or data structure to store the elements of the input sequence, and as such may have a performance impact. For example, the ToList() method converts an input sequence to a List<T>, and the ToDictionary() method converts an input sequence to a Dictionary<TKey, TValue>.
ToList() creates a new List object and copies all the elements from the source IEnumerable<T> into the new List. This means that it has to iterate through all the elements in the source IEnumerable<T>, which has a time complexity of O(n), where n is the number of elements in the source IEnumerable<T>.
This can have a performance impact, especially if the source IEnumerable<T> is large and the operation is being performed frequently. In these cases, it may be more efficient to use a different approach, such as using a loop to add the elements to the List manually, or using a different data structure that allows for more efficient insertion and retrieval of elements.
However, in many cases the performance impact of ToList() will not be significant, especially if the source IEnumerable<T> is small or the operation is only being performed infrequently. It is generally a good idea to use ToList() when you need to work with a List rather than an IEnumerable<T>, as it can make the code more readable and easier to work with.
