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【C++注意事项】5 Top-level const , The auto and decltype Type Specifier

top-level const As we’ve seen, a pointer is an object that can point to a different object. As a result, we can talk independently about whether a pointer is const and whether...

【SICP练习】148 练习4.4

练习4-4 原文 Exercise 4.4. Recall the definitions of the special forms and and or from chapter 1: ● and: The expressions are evaluated from left to right. If any expression eva...

【SICP练习】147 练习4.3

练习4-3 原文 Exercise 4.3. Rewrite eval so that the dispatch is done in data-directed style. Compare this with the datadirected differentiation procedure of exercise 2.73. (You ...

【C++注意事项】6 Library string Type

Processing Every Character? Use Range-Based for If we want to do something to every character in a string, by far the best approach is to use a statement introduced by the new s...

【SICP练习】146 练习4.2

练习4-2 原文 Exercise 4.2. Louis Reasoner plans to reorder the cond clauses in eval so that the clause for procedure applications appears before the clause for assignments. He a...

【SICP练习】120 练习3.51

练习3-51 原文 Exercise 3.51. In order to take a closer look at delayed evaluation, we will use the following procedure, which simply returns its argument after printing it: (de...

【SICP练习】149 练习4.5

练习4-5 原文 Exercise 4.5. Scheme allows an additional syntax for cond clauses, ( => ). If evaluates to a true value, then is evaluated. Its value must be a procedure of one arg...

【SICP练习】151 练习4.7

练习4-7 原文 Exercise 4.7. Let* is similar to let, except that the bindings of the let variables are performed sequentially from left to right, and each binding is made in an en...

几乎所有编程语言的hello, world程序(3)

LSL // Hello World in Linden Scripting Language (LSL) default { state_entry() { llSay(0, "Hello World"); } } Lua # Hello World in Lua print "Hello world" m...

【SICP练习】107 练习3.8

练习3-8 原文 Exercise 3.8. When we defined the evaluation model in section 1.1.3, we said that the first step in evaluating an expression is to evaluate its subexpressions. But ...

【LINQ技术】扩展特性和LINQ操作符

LINQ特有的编程结构 LINQ就像是嵌入到C#中的强类型查询语言,尽管和SQL查询很像,但语法却并不相同,甚至还有截然相反的一面。 LINQ是在.NET发展到3.5版的时候被引进的,C#和VB语言都为此做了...

2015/09/08 21:48
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