When to use qualitative and quantitative testing?
Qualitative testing should be used to gain a better understanding of the user’s experience. It is best used at the beginning of the product development life cycle to determine user needs, to spot problems early on, and to identify new opportunities. Quantitative testing should be used to measure the usability and performance outcomes of a product. It works best when used to validate the results of qualitative testing and to measure the systemic changes in usability.
How long does flat rate shipping take for USPS?
Flat Rate shipping offered by the United States Postal Service (USPS) typically takes 1–3 business days for delivery, depending on the destination and shipping method (Priority Mail Express or Priority Mail).
Do vintage paintings need to be framed?
Yes, vintage paintings should always be framed to protect them and to enhance their appearance. It is important that the frame and matting have a protective seal to prevent dust and moisture from damaging the painting.
how to make php
You can set and retrieve session timeouts using the php.ini configuration file, the session.gc_maxlifetime directive.
-- Set session timeout to one hour --
session.gc_maxlifetime = 3600
-- Retrieve session timeout value --
$session_timeout = ini_get("session.gc_maxlifetime");
echo "Session timeout is set to $session_timeout seconds";
How does a perfect binary tree differ from other types?
A perfect binary tree is a specific type of binary tree that is completely filled, with all levels having the maximum number of nodes. This makes it "perfectly balanced", and all leaf nodes are at the same level. Other types of binary trees are not always perfectly balanced. They may have missing nodes or some nodes may have fewer than two children. A perfect binary tree offers the most efficient search and insertion/deletion time among all types of binary trees.