January 2017
Intermediate to advanced
338 pages
7h 51m
English
Content preview from F# High PerformanceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Overview of common bottlenecks
F# has common bottlenecks although they might be subtle as well.
In order to be able to quickly understand the bottleneck factors in F#, we will categorize the shared general bottlenecks of .NET as managed bottlenecks (also in C#/VB), and F#-only bottlenecks (this includes when using F# with other languages).
The following are managed .NET bottlenecks (from obvious to less obvious):
- String concatenations, such as using string
String.Concatinstead ofStringBuilder. This is often overlooked because of a lack of awareness of the string's immutability. - Usage of non-generic collections such as
ArrayList. - Incorrectly handling side effects, such as exceptions and I/O.
- Mutable objects usage, including casting.
- Complex objects ...
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