* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2.3 KiB
2.3 KiB
id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
587d7db8367417b2b2512ba0 | 匹配除了字母和数字的所有符号 | 1 | 301353 | match-everything-but-letters-and-numbers |
--description--
已经了解到可以使用缩写\w
来匹配字母和数字[A-Za-z0-9_]
。不过,有可能想要搜寻的匹配模式是非字母数字字符。
可以使用\W
搜寻和\w
相反的匹配模式。注意,相反匹配模式使用大写字母。此缩写与[^A-Za-z0-9_]
是一样的。
let shortHand = /\W/;
let numbers = "42%";
let sentence = "Coding!";
numbers.match(shortHand); // Returns ["%"]
sentence.match(shortHand); // Returns ["!"]
--instructions--
使用缩写\W
来计算不同引号和字符串中非字母数字字符的数量。
--hints--
你的正则表达式应该使用全局状态修正符。
assert(nonAlphabetRegex.global);
你的正则表达式应该在'The five boxing wizards jump quickly.'
中匹配到 6 个非字母数字字符。
assert(
'The five boxing wizards jump quickly.'.match(nonAlphabetRegex).length == 6
);
正则表达式应该使用元字符来匹配非字母字符。
assert(/\\W/.test(nonAlphabetRegex.source));
你的正则表达式应该在'Pack my box with five dozen liquor jugs.'
中匹配到 8 个非字母数字字符。
assert(
'Pack my box with five dozen liquor jugs.'.match(nonAlphabetRegex).length == 8
);
你的正则表达式应该在'How vexingly quick daft zebras jump!'
中匹配到 6 个非字母数字字符。
assert(
'How vexingly quick daft zebras jump!'.match(nonAlphabetRegex).length == 6
);
你的正则表达式应该在'123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.'
中匹配到 12 个非字母数字字符。
assert(
'123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.'.match(nonAlphabetRegex)
.length == 12
);
--seed--
--seed-contents--
let quoteSample = "The five boxing wizards jump quickly.";
let nonAlphabetRegex = /change/; // Change this line
let result = quoteSample.match(nonAlphabetRegex).length;
--solutions--
let quoteSample = "The five boxing wizards_jump quickly.";
let nonAlphabetRegex = /\W/g; // Change this line
let result = quoteSample.match(nonAlphabetRegex).length;