F#之打印函数占位符详解

作者:Jack 日期:2010-6-23 13:05:18

打印函数主要有三个：printf、printfn和sprintf。

printf将参数打印到控制台窗口中。printfn将参数打印输出并且换行。

打印函数可以使用下面这些格式指示符：

%O格式指示符会将对象进行装箱操作，并调用Object.ToString函数。%A的运作方式相同，但是在调用Object.ToString之前会检查[]属性指定的任何特殊打印选项。

PS: 紧接着的是来自官方的解释,从侧面说明了 printfn "%O" false (结果为False)与 printfn "%A" false(结果为false)的区别

%O 设置通过将对象装箱并使用其 ToString 方法来打印的任何值的格式。

%A 设置使用默认布局设置打印的任何值的格式。

sprintf用于输出的目标为一个字符串的情况。

节选自:CC682,更多格式请参考官方Core.Printf的%[flags][width][.precision][type]详解

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我正在看的书籍

作者:Jack 日期:2010-6-23 13:04:05

1.Foundations of F#

Functional programming (FP) is the future of .NET programming, and F# is much more than just an FP language. Every professional .NET programmer needs to learn about FP, and theres no better way to do it than by learning F#and no easier way to learn F# than from Foundations of F#.

If youre already familiar with FP, youll find F# the language youve always dreamed of. And all .NET programmers will find F# an exciting real-world alternative to C# and Visual Basic. This book is likely to have many imitators, but few true competitors. Written by F# evangelist Rob Pickering, and tech reviewed by F#s main designer, Don Syme, this is an elegant, comprehensive introduction to all aspects of the language and an incisive guide to using F# for real-world professional development. F# is the future of programming (not just on .NET), and the future is now.

这本书09年夏就开始在看了，后来一度荒废，继而直到上周参加盛大创新院赞助首届.NET技术交流会听了老赵的《F#语言对异步程序设计的支持》，才又激起我对F#探索的兴趣来。也希望籍此机会，好好的熟悉一下F#。

Tags: DongPad