Functional programming 6.3

Just because a functional language is functional ([maybe] even completely pure like Haskell!), it doesn’t mean that programs written in that language must be pure when [run].

Haskell’s approach, for example, when dealing with side-effects, can be explained rather simply: Let the whole program itself be pure (meaning that functions always return the same values for the same arguments and don’t have any side effect), but let the return value of the main function be an action that can be [run].

— answered Dec 6 ’11 at 21:32, dflemstr

— Stack Overflow

2013.09.03 Tuesday ACHK

Bank account

緬懷過去 2 | Cumulative concept of time, 16

For a bank account, the past balances are irrelevant and useless. 

What is really relevant is the present balance.

And it has encrypted all the past money that can still be used now. 

— Me@2011.04.25




— Me@2013.09.03

2013.09.03 Tuesday (c) All rights reserved by ACHK

無限倍 1.2

身輕如燕 1.8 | 試前暑假 3.3

這段改編自 2010 年 7 月 20 日的對話。


所以,如果你可以在中七(中學的最後一個學年),開學前的那個暑假,先行開始執行你的「past paper 大計」,先行完成數份 past paper(歷屆試題)的話,你的進度就已經是,一般人的一千萬倍。

— Me@2013.09.03

2013.09.03 Tuesday (c) All rights reserved by ACHK