Page 120 - Open Soource Technologies 304.indd

Event Driven Programming

Hyperbolic HCosec (X) = 2/(Exp (X)) – Exp (–X))
tangent
HCotan(X) = (Exp(X) + Exp(–X))/(Exp(X) – Exp(–X))
Hyperbolic
secant HArcsin (X) = Log (X+Sqr (X*X + 1))

Hyperbolic
HArccos (X) = Log (X+Sqr (X*X–1))
cosecant
Hyperbolic
cotangent

Inverse
hyperbolic
sine
Inverse

hyperbolic
cosine

5.2.12 Handling Dates and Times
One of the biggest headaches a programmer can have is working with dates.
Handling hours, minutes, and seconds can be as bad as working with pounds,
shillings, and pence. Fortunately, Visual Basic has a number of date and

time handling functions.
Visual Basic
date
keywords. Use This

To do This
Get the
Date, Now, Time
Current date
or time
DateAdd, DateDiff, DatePart
Perform date
calculations DateSerial, DateValue
Return a data
TimeSerial, TimeValue
Return a time
Set the data Date, Time
or time
Timer
Time a
process

114 LOVELY PROFESSIONAL UNIVERSITY