August 2001
Intermediate to advanced
656 pages
18h 5m
English
Content preview from VB .NET Language in a Nutshell
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Operator Precedence
If you include more than one operator in a single line of code, you need to know the order in which VB .NET will evaluate them. Otherwise, the results may be completely different from what you intended. The rules that define the order in which a language handles operators is known as the order of precedence. If the order of precedence results in operations being evaluated in an order other than the intended one, you can explicitly override the order of precedence through the use of parentheses. Indeed, we strongly recommend the use of sufficient parentheses to avoid any possible misinterpretation. Put another way, we recommend using enough parentheses so that operator precedence is no longer relevant!
When a single line of code includes operators from more than one category, they are evaluated in the following order:
| Arithmetic operators |
| Concatenation operators |
| Comparison operators |
| Logical operators |
Within each category of operators, except for the single concatenation operator, there is also an order of precedence. If multiple comparison operators appear in a single line of code, they are simply evaluated from left to right. The order of precedence of arithmetic operators is as follows:
| Exponentiation (^) |
| Division and multiplication (/,*) (no order of precedence between the two) |
| Integer division (\) |
| Modulo arithmetic (Mod) |
| Addition and subtraction (+,-) (no order of precedence between the two) |
If the same arithmetic operator is used multiple times in a single line ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.