Optimizing the performance of vb.net applications (1)

Program | performance | Optimization 1 integer division operators \ and/
\ faster than/10 times times (if it is integer division and does not need to keep decimals)

(2) Assignment operator a +=b and a = A+b
= Fast

(3) Series Operators & and +
Use & Quick

(Source: http://www.devcity.net/newsletter/archive/devcity/devcity20040315.htm#ni030)
. NET Pro:optimize The performance of vb.net applications
Operators

by Mike McIntyre

Division: \ V.s./

Divide integral values with the [back slash] operator when you did not need decimal points or fractional values. The \ operator is the integral division operator and it are up to the faster than the/(forward slash) operator.

Compound Assignment Operators:a + = b v.s A = a + b

Compound assignment Statements-perform-a operation on a argument before assigning it to another. Example:

A + b

In the example above, B are added to the value of a, and that's new value is then assigned to a. Compound assignment s are more concise than their constituent operators (separate + and =). Compare the statement above to the one below. The statement above is a shorthand equivalent of the statement below.

A = a + b

Compound assignment operators are faster. If you are are operating on a expression instead of a single variable, for example an array element, can achieve a signif Icant improvement with compound assignment operators.

Compound assignment operators for numbers:

^=
*=
/=
\=
+=
-=
Compound operator for strings: &= Example:

Dim A as String = "The" a &= "Name"
Result:first Name

Concatenation: & V.s. +

Use the & concatenation operator instead of the + operator to increase the speed of concatenations. Performance of the & and + operators are only equivalent if both operands type String. If not, the + operator is late bound and must perform type checking and conversions.