Useful tips for everyday
How do you add duplicates to a dictionary? As other have said, it is not possible to add duplicate key in dictionary. How about using…
How do you write Roman numerals in Java? Convert Integer to Roman I can be placed before V or X, represents subtract one, so IV…
Which shell supports aliases? alias is available in Unix shells, AmigaDOS, 4DOS/4NT, KolibriOS, Windows PowerShell, ReactOS, and the EFI shell. Aliasing functionality in the MS-DOS…
How do you use an array in HTML form? You can create arrays in form fields using square brackets. That means you can name fields…
Can queries be based on multiple tables? Often, data in two tables are related to each other through a third table. This is usually the…
Is it safe to give someone your bank login? Even if you use a dummy account, most banks strictly forbid giving your login credentials to…
What is Ruby marshalling? Marshalling is a serialization process when you convert an object to a binary string. Ruby has a standard class Marshal that…
Which class can have only one instance? singleton class Implementation. An implementation of the singleton pattern must: ensure that only one instance of the singleton…
How do I import CSV file into a MySQL table? Here are the steps: Prepare the CSV file to have the fields in the same…
How do you repeat a function in VBA? There are 4 basic steps to writing a For Each Next Loop in VBA: Declare a variable…