Text adoption mail is often included in the term direct response mail, but by its very nature and objectives it really should be in a category of its own. With this type of mailing the publisher expects to receive exam copy requests and future orders for classroom use.
The PL/SQL WHILE Loop. The WHILE loop, also called a conditional loop, evaluates a condition before each loop executes, and if false, the loop is terminated. If the expression is false when the program reaches the WHILE loop, the loop code is jumped and never executed.Use a WHILE loop when the condition test is required at the start of the loop. The next example contains three WHILE loops.The last loop will never execute because the condition will never be true. The middle loop uses multiple condition tests, using the AND key word.se a WHILE loop when the condition test is required at the start of the loop. The next example contains three WHILE loops. The last loop will never execute because the condition will never be true. The middle loop uses multiple condition tests, using the AND key word.
For loop from 0 to 2, therefore running 3 times. While loop from 1 to infinity, therefore running infinity times. As you can see, they serve different purposes. The for loop runs for a fixed amount-in this case, 3, while the while loop theoretically runs forever.f you've done any programming before, there's no doubt you've come across a for loop or an equivalent to it. In Python, they work a little differently. Basically, any object with an iterable method can be used in a for loop in Python.