| 1. | Zero - width negative lookahead assertion 零宽度负预测先行断言。 |
| 2. | Zero - width positive lookahead assertion 零宽度正预测先行断言。 |
| 3. | Nonbacktracking lookahead and lookbehind 非回溯预测先行和追溯 |
| 4. | Carry lookahead generator 先行进位生成程序 |
| 5. | The biggest limitation is that yacc is limited to one token of lookahead 最大的局限在于, yacc被限定为一个预读标记。 |
| 6. | Provides information about regular expression lookahead and lookbehind behavior 提供关于正则表达式预测先行和追溯行为的信息。 |
| 7. | Assertions do not change : lookahead looks to the right ; lookbehind looks to the left 断言不改变:预测先行向右搜索;回顾后发向左搜索。 |
| 8. | A subexpression that performs a positive lookahead search , which matches the string at any point where a string matching 执行正向预测先行搜索的子表达式,该表达式匹配处于匹配 |
| 9. | A subexpression that performs a negative lookahead search , which matches the search string at any point where a string not matching 的字符串的起始点的搜索字符串。它是一个非捕获匹配,即不能捕获供以后使用的匹配。 |
| 10. | The following regular expression , which is an example of a positive lookahead , matches windows 95 , windows 98 , and windows nt 下面的正则表达式(这是一个正向预测先行的示例)匹配windows 95 、 windows 98和windows nt : |