输入英文和空格的正则表达式
### English Response:
English & Whitespace Regular Expression.
The following regular expression matches English letters (a-z and A-Z) and whitespace characters:
[a-zA-Z\s]
This regex can be used to perform various text processing tasks, such as:
js正则表达式验证数字和字母 Filtering out non-English characters and whitespace: To remove all non-English characters and whitespace from a string, you can use the following regex:
[^\w\s]
Extracting English words from a string: To extract all English words from a string, you can use the following regex:
[a-zA-Z]+。
Splitting a string into English words: To split a string into an array of English words, you can use the following regex:
[a-zA-Z]+(\s+[a-zA-Z]+)。
Example Usage.
Here are some examples of how the English & Whitespace regular expression can be used:
# Remove all non-English characters and whitespace from a string.
input_string = "Hello, world! こんにちは世界"
result = input_string.gsub(/[^a-zA-Z\s]/, "")。
# result: "Hello world!"
# Extract all English words from a string.
input_string = "Hello, world! こんにちは世界"
result = input_string.scan(/[a-zA-Z]+/)。
# result: ["Hello", "world"]
# Split a string into English words.
input_string = "Hello, world! こんにちは世界"
result = input_string.split(/[a-zA-Z]+(\s+[a-zA-Z]+)/)。
# result: ["Hello", ",", "world", "!", "こんにちは", "世界"]
### Chinese Response:
英文和空格正则表达式。
以下正则表达式匹配英文字母(a-z 和 A-Z)和空格字符:
[a-zA-Z\s]
这个正则表达式可用于执行各种文本处理任务,例如:
过滤掉非英文字符和空格: 要从字符串中删除所有非英文字符和空格,可以使用以下正则表达式:
[^\w\s]
从字符串中提取英文词语: 要从字符串中提取所有英文词语,可以使用以下正则表达式:
[a-zA-Z]+。
将字符串拆分为英文词语: 要将字符串拆分为英文词语数组,可以使用以下正则表达式:
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